L2 / L3 Switches Protocol Independent Multicast (PIM
Contents
1. The example below shows the commands used to configure the SPT switch period SMIS configure terminal SMIS config set ip pim spt switchperiod 30 SMIS config end SMIS show ip pim thresholds Supermicro L2 L3 Switches Configuration Guide PIM Configuration Guide PIM SPT Threshold Information Group Threshold 0 Source Threshold 0 Switching Period 30 PIM SPT RP Threshold Information Register Threshold 0 RP Switching Period 0 Register Stop rate limit 5 1 12 3 2 2 SPT Threshold The Shortest Path Tree SPT threshold is used together with the SPT switch period to specify the time when the last hop router can switch over to SPT The multicast data packet count is checked every SPT switch period interval and if the count exceeds the SPT threshold the last hop router switches from RP tree to SPT The Shortest Path Tree SPT threshold is disabled by default in Supermicro switches i e last hop routers switch to SPT immediately upon receipt of a multicast data packet Follow the steps below to configure the Shortest Path Tree SPT threshold Step Command Description Step 1 configure terminal Enters the configuration mode Step 2 set ip pim threshold spt grp spt src number Sets the Shortest Path Tree SPT of packets 0 2147483647 gt threshold for Group and Source The number of packets can be any number from 0 2147483647 Default is O packets Step 3 end Exits the2. Display PIM interface information SMIS show ip pim interface detail vlan200 910 is up Internet address is 200 200 200 5 Multicast Switching Enabled PIM Enabled PIMv6 Disabled PIM version 2 mode Sparse PIM DR 200 200 200 5 PIM DR Priority 1 PIM Neighbour Count 1 PIM Hello Query Interval 30 PIM Message Interval 60 PIM Override Interval O PIM Lan Delay 0 PIM Lan Prune Delay Disabled PIM Component Id 110 Supermicro L2 L3 Switches Configuration Guide PIM Configuration Guide PIM domain border disabled vlan10 912 is up Internet address is 10 10 10 10 Multicast Switching Enabled PIM Enabled PIMv6 Disabled PIM version 2 mode Sparse PIM DR 10 10 10 10 PIM DR Priority 1 PIM Neighbour Count 0 PIM Hello Query Interval 30 PIM Message Interval 60 PIM Override Interval 0 PIM Lan Delay 0 PIM Lan Prune Delay Disabled PIM Component Id 110 PIM domain border disabled Display PIM component SMIS show ip pim component PIM Component Information Component ld 1 PIM Mode sparse PIM Version 2 Elected BSR 0 0 0 0 Candidate RP Holdtime 0 Component ld 110 PIM Mode sparse PIM Version 2 Elected BSR 0 0 0 0 Candidate RP Holdtime 0 Display IGMP static group membership SMIS show ip igmp groups Include Mode E Exclude Mode S Static Mbr D Dynamic Mbr GroupAddress Flglface UpTime ExpiryTime LastReporter 227 1 1 1 S vlan10 Od 00 23 17 94 0d 00 00 00 00 10 10 10 10 227
3. CRP is populated as a RP set across the domain After receiving the RP set every router performs a uniform hashing to elect one RP from the RP set for every group Receivers interested in particular multicast group data from any source send a G join to the upstream neighbor towards the router that was elected as the RP for the particular group The last hop DR can choose to receive multicast data directly from each source for that group instead of from the RP In this case the last hop DR sends S G join to upstream towards the source This is called Source Specific Tree or Shortest Path Tree SPT PIM SM is typically used in WAN environments 1 2 2 PIM DM Basics PIM Dense mode operates on the basis that almost all possible subnets have at least one interested receiver Hence in PIM DM multicast data is flooded on all possible branches and then pruning those branches that do not want multicast data from a particular group and or source PIM DM is typically used in LAN environments Figure PIM 3 Multicast Forwarding with PIM DM Source 8 SSD 4 Receivers Supermicro L2 L3 Switches Configuration Guide PIM Configuration Guide 1 3 PIM Support Supermicro switches support both PIM SM and PIM DM An IP multicast routing table can hold 2550 entries which includes 255 groups and 10 sources per group O 1 4 PIM requires a unicast routing protocol such as RIP or OSPF to learn the rou
4. end configure Static Group membership SMIS configure terminal interface vlan 10 ip igmp static group 227 1 1 1 Save this PIM configuration SMIS write startup config Building configuration Please wait May take a few minutes OK SMIS Check the running configuration for accuracy SMIS show running config Building configuration Switch ID Hardware Version Firmware Version 0 SSE G48 TG4 P2 01 1 0 13 7 ip address dhcp vlan 1 ports gi 0 2 23 untagged ports gi 0 25 48 untagged ports ex 0 1 4 untagged exit vian 10 ports gi 0 1 untagged exit vlan 200 ports gi 0 24 untagged exit snmp view restricted 1 excluded nonvolatile interface vlan 1 ip address dhcp interface vlan 200 ip address 200 200 200 5 255 255 255 0 interface vlan 10 Supermicro L2 L3 Switches Configuration Guide Ed PIM Configuration Guide ip address 10 10 10 10 255 255 255 0 set ip igmp enable ip igmp static group 227 1 1 1 exit set ip igmp enable set ip pim enable set ip pim static rp enable ip pim component 1 exit ip pim component 110 rp static rp address 227 0 0 0 255 0 0 0 200 200 200 1 exit interface vlan 200 ip pim componentld 110 exit interface vlan 10 ip pim componentld 110 exit H Display PIM neighbor information SMIS show ip pim neighbor Neighbour IfName Idx Uptime Expiry Ver DRPri Mode Compld Override Lan Address Interval Delay 200 200 200 1 vlan200 910 00 24 17 90 v2 1 S 110 0
5. ip pim message interval lt Interval 0 65535 gt Configures PIM Join prune interval value The Join Prune interval value can be any number from 0 65535 Default is 60 Step 4 end Exits the configuration mode Step5 show ip pim interface Vlan lt vlan id gt Displays the Join Prune interval lt interface type gt lt interface id gt detail information for the given interface Step 6 write startup config Optional step saves this PIM Supermicro L2 L3 Switches Configuration Guide PIM Configuration Guide configuration to be part of the startup configuration The no ip pim message interval command resets the Join Prune interval to its default value of 60 The example below shows the commands used to configure the PIM Join Prune interval Configure the PIM Join Prune interval for layer3 VLAN 100 SMIS configure terminal SMIS config interface vlan 100 SMIS config if ip pim message interval 300 SMIS config if end SMIS show ip pim interface detail vlan100 504 is up Internet address is 100 100 100 1 Muticast Switching Enabled PIM Enabled PIMv6 Disabled PIM version 2 mode Sparse PIM DR 100 100 100 1 PIM DR Priority 1 PIM Neighbour Count 0 PIM Hello Query Interval 30 PIM Message Interval 300 PIM Override Interval 0 PIM Lan Delay 0 PIM Lan Prune Delay Disabled PIM Component Id 50 PIM domain border disabled 1 12 1 2LAN Prune Delay The LAN Prune Delay option is used in
6. Information in this document is subject to change without notice Other products and companies referred to herein are trademarks or registered trademarks of their respective companies or mark holders Copyright 2013 by Super Micro Computer Inc All rights reserved Printed in the United States of America Supermicro L2 L3 Switches Configuration Guide PIM Configuration Guide Contents 1 PIM Configuration Guide erre rre rrr haer nr rer i rrr nr ren re ra erai 4 1 1 IP Multicast O Ve EV I W disa kis salla y dilan aba s k b a kudand d la a b a kah d k diba n uk ada nn ka K iners esten sn d rennes nsn nen ka nennen 4 1 2 PIM 6 1 2 1 PIM SM cR EM 6 1 2 2 PIM DMI B slCS i D AEAT OE HER tuoi c eodeni ved iuc 0K 1440542 VER AN RA PA R399 H 7 1 3 PIM SUDO OMG stceccecoscczete M 8 1 4 Ji Nsrccme E M 8 1 5 EnJDIN O PUM oS 9 1 6 PIM Component and Interface cccccccccssssccecssscececssecececsssececssssececseeseeseseseeseeseseeceeseeaeeseseaeees 10 1 7 PIM DIM 12 1 8 PIM neighbor scoateti nae oHERC cte ue adi eeu exa vea aco dera E ed ROUEN EE eeu do eS 13 1 8 1 PiWgolgi re E ET EDEN 13 1 8 2 Hell u ifi GOVA kas pt EE 15 1 8 3 Hold CIM DD DD ER 17 1 9 Miulticast ROUtING Table irit ree ree eret rae n r
7. L2 L3 Switches Configuration Guide PIM Configuration Guide O The no ip pim hello holdtime command resets the hold time to its default value of 30 The example below shows the commands used to configure the PIM Hello hold time Configure the PIM Hello hold time for layer3 VLAN 100 SMIS configure terminal SMIS config interface vlan 100 SMIS config if ip pim hello holdtime 90 SMIS config if end 1 9 Multicast Routing Table The multicast routing table contains information about active multicast trees This table lists both forwarding and non forwarding entries i e multicast entries which have data flow and entries which do not have data flow Every entry in the multicast routing table has one Incoming Interface IIF and one or more Outgoing Interfaces OIF The entry can be G or S G G entries have the W and R bit set while S G entries have the Shortest Path Tree SPT bit set The RP and RPF neighbors are also listed The route to the BSR RP and Source must be reachable via any unicast protocol Otherwise the multicast routing table is not formed due to an RPF check failure The example below shows a PIM multicast routing table display output SMIS show ip pim mroute IP Multicast Routing Table Route Flags S SPT Bit W Wild Card Bit R RPT Bit Timers Uptime Expires Interface State Interface State Mode PIM Multicast Routing Table For Component 50 225 1 1 1 00 00 02 RP
8. PIM Lan Prune Delay Disabled PIM Component Id 50 PIM domain border disabled 1 7 PIM Mode PIM operates in sparse mode by default in Supermicro switches PIM mode can be changed at anytime for any component All routers in a PIM domain must have the same PIM mode Follow the steps below to set PIM mode in components Step Command Description Step 1 configure terminal Enters the configuration mode Step 2 ip pim component Componentld 1 255 gt Enters the PIM component configuration mode Component Identifier may be any value from 1 to 255 Default is 1 Step 3 set mode sparse dense Configures Sparse or dense PIM mode for the component Step 4 end Exits the configuration mode Supermicro L2 L3 Switches Configuration Guide PIM Configuration Guide component Step 5 show ip pim component Componentld lt 1 255 gt Displays the PIM mode for the given Step 6 write startup config Optional step configuration to be part of the startup configuration saves this PIM The example below shows the commands to configure PIM mode SMIS configure terminal SMIS config ip pim component 50 SMIS pim comp set mode dense SMIS pim comp end SMIS show ip pim component PIM Component Information Component ld 1 PIM Mode sparse PIM Version 2 Elected BSR 0 0 0 0 Candidate RP Holdtime 0 Component ld 50 PIM Mode dense PIM Version 2 Graf
9. SMIS config vlan ports Gi 0 24 untagged SMIS config vlan end Supermicro L2 L3 Switches Configuration Guide PIM Configuration Guide SMIS configure terminal SMIS config interface vlan 200 SMIS config if it ip address 200 200 200 1 255 255 255 0 SMIS config if it end HEnable PIM and IGMP SMIS configure terminal SMIS config set ip pim enable SMIS config end Hconfigure Component SMIS configure terminal SMIS config ip pim component 100 SMIS pim comp end SMIS configure terminal SMIS config interface vlan 200 SMIS config if ip pim componentld 100 SMIS config if it end configure Static RP SMIS configure terminal SMIS config set ip pim static rp enable SMIS config ip pim component 100 SMIS pim comp rp static rp address 227 0 0 0 255 0 0 0 200 200 200 1 SMIS pim comp end Save this PIM configuration SMIS write startup config Building configuration Please wait May take a few minutes OK SMIS Check the running configuration for accuracy SMIS show running config Building configuration Switch ID Hardware Version Firmware Version 0 SBM GEM X3S B4 01 1 0 14 2t ip address dhcp vlan 1 ports gi 0 1 23 untagged ports ex 0 1 3 untagged exit vlan 100 exit vlan 200 Supermicro L2 L3 Switches Configuration Guide PIM Configuration Guide ports gi 0 24 untagged exit interface vlan 200 ip address 200 200 200 1 255 255 255 0 interface vlan 100 exi
10. The example below shows the commands used to configure the PIM LAN delay Configure the PIM LAN delay for layer3 VLAN 100 SMIS configure terminal SMIS config interface vlan 100 SMIS config if set ip pim lan prune delay enable SMIS config if ip pim lan delay 200 SMIS config if itend SMIS show ip pim interface detail vlan100 504 is up Internet address is 100 100 100 1 Muticast Switching Enabled PIM Enabled PIMv6 Disabled PIM version 2 mode Sparse PIM DR 100 100 100 1 PIM DR Priority 1 PIM Neighbour Count 0 PIM Hello Query Interval 30 PIM Message Interval 60 PIM Override Interval 0 PIM Lan Delay 200 PIM Lan Prune Delay Enabled PIM Component Id 50 PIM domain border disabled Supermicro L2 L3 Switches Configuration Guide PIM Configuration Guide 1 12 1 3 Override Interval The Join Prune override interval is used in a multi Access network by downstream routers The downstream router in a multi access LAN waits for the override interval period after sending a prune message to send a second prune message if it still continues to receive data due to other routers in multi access LAN that still want to receive multicast data In a multi access LAN the override interval ensures multicast data is forwarded only if there is at least one router with receivers interested in a particular group so data is not flooded unnecessarily in the multi access LAN The default override interval is 0 seconds Supermi
11. as 100 for layer3 VLAN 200 5 Configure static RP on Component Identifier 100 Configuration on switch A configure Layer3 VLAN SMIS configure terminal SMIS config vlan 10 SMIS config vlan ports Gi 0 1 untagged SMIS config vlan exit SMIS config vlan 200 SMIS config vlan ports Gi 0 24 untagged SMIS config vlan end SMIS configure terminal SMIS config interface vlan 200 SMIS config if it ip address 200 200 200 5 255 255 255 0 SMIS config if it exit SMIS config interface vlan 10 SMIS config if it ip address 10 10 10 10 255 255 255 0 SMIS config if it end HEnable PIM and IGMP SMIS configure terminal SMIS config interface vlan 10 SMIS config if set ip igmp enable SMIS config if exit SMIS config set ip igmp enable SMIS config set ip pim enable SMIS config end configure Component SMIS configure terminal SMIS config ip pim component 110 SMIS pim comp end SMIS configure terminal SMIS config interface vlan 200 SMIS config if ip pim componentld 110 SMIS config if end SMIS configure terminal SMIS config interface vlan 10 SMIS config if it ip pim componentld 110 SMIS config if it end Supermicro L2 L3 Switches Configuration Guide PIM Configuration Guide configure Static RP SMIS configure terminal SMIS config set ip pim static rp enable SMIS config ip pim component 110 SMIS pim comp rp static rp address 227 0 0 0 255 0 0 0 200 200 200 1 SMIS pim comp
12. configuration mode Step 4 write startup config Optional step saves this PIM configuration to be part of the startup configuration The example below shows the commands to configure PIM SPT threshold SMIS configure terminal SMIS config set ip pim threshold spt grp 100 SMIS config set ip pim threshold spt src 200 SMIS config end SMIS show ip pim thresholds PIM SPT Threshold Information Supermicro L2 L3 Switches Configuration Guide PIM Configuration Guide Group Threshold 100 Source Threshold 200 Switching Period 0 PIM SPT RP Threshold Information Register Threshold 0 RP Switching Period 0 Register Stop rate limit 5 1 13 PIM Configuration Example Figure PIM 4 PIM Configuration Example Gi0 1 Switch A Last hop DR Switch B RP VLAN 10 a Gi 0 24 Gi 0 24 Trunk po 1 Native VLAN 200 227 8 Receiver Hosts Source On switch A 1 Enable PIM and IGMP globally 2 Configure PIM component 110 3 Create layer 3 VLAN interfaces 10 and 200 4 Configure PIM Component Identifier as 110 for both layer3 VLANs 10 and 200 5 Configure static RP on Component Identifier 110 6 Configure static IGMP groups on layer 3 VLAN interface 10 On switch B 1 Enable PIM and IGMP globally 2 Configure PIM component 100 Supermicro L2 L3 Switches Configuration Guide PIM Configuration Guide 3 Create layer 3 VLAN interface 200 4 Configure PIM Component Identifier
13. for Component 1 BSR Address 0 0 0 0 BSR Priority 0 Hash Mask Length 30 Supermicro L2 L3 Switches Configuration Guide PIM Configuration Guide This system is the PIMv4 Bootstrap Router BSR BSR Address 100 100 100 1 BSR Priority 155 Hash Mask Length 30 1 12 2 2 Candidate RP CRP The RP is the central convergence point of sources and receivers In a PIM spars e domain there are multiple candidate RPs but only one per group is elected The elected RP is the candidate RP having the highest IP address The elected RPs send their information to the BSR which maintains RP to group mapping as the RP set Supermicro switches provide flexibility for users to configure a different CRP on different components Follow the steps below to configure Candidate RP CRP Step Command Description Step 1 configure terminal Enters the configuration mode Step 2 ip pim component Componentld 1 255 gt Enters the PIM component configuration mode Component Identifier may be any value from 1 to 255 Default is 1 Step 3 rp candidate rp address Group Address Group Configures Candidate RP value Mask IP address Group Address Group Mask This combination can specify any IP Multicast address from 224 0 0 0 to 239 255 255 255 IP Address should be any interface IP address of the component Step 4 rp candidate holdtime lt Holdtime value 0 255 gt Optional Configures the Candidate R
14. pim dr priority 500 SMIS config if end SMIS show ip pim interface detail vlan100 504 is up Internet address is 100 100 100 1 Muticast Switching Enabled PIM Enabled PIMv6 Disabled PIM version 2 mode Sparse PIM DR 100 100 100 1 PIM DR Priority 500 PIM Neighbour Count 0 PIM Hello Query Interval 30 PIM Message Interval 60 PIM Override Interval 0 PIM Lan Delay 0 PIM Lan Prune Delay Disabled PIM Component Id 50 PIM domain border disabled 1 8 2 Hello Interval The PIM router sends Hello messages periodically to all its neighbors to maintain information about directly connected upstream router s towards source s or RP s and downstream routers towards receivers This periodic time interval is called the Hello Interval The default Hello interval is 30 seconds Supermicro switches provide flexibility for users to configure a different Hello interval for individual interfaces Follow the steps below to change the Hello interval on any interface Step Command Description Step 1 configure terminal Enters the configuration mode Supermicro L2 L3 Switches Configuration Guide PIM Configuration Guide Step 2 interface interface type lt interface id gt or interface range interface type interface id Enters the interface mode configuration interface type may be any of the following gigabit ethernet gi extreme ethernet ex qx ethernet qx vlan inter
15. 100 100 100 1 Incoming Interface vlan100 RPF nbr NULL Route Flags WR Outgoing InterfaceList vlan100 Forwarding Sparse 00 00 02 Supermicro L2 L3 Switches Configuration Guide PIM Configuration Guide 1 10 PMBR A PIM Multicast Border Router PMBR is the border between two or more PIM domains running different MRP s such as PIM SM PIM DM or DVMRP PMBRs connect each PIM domain to the rest of the Internet The PMBR forwards multicast packets across different domains hence receivers in one domain receive packets from sources in another domain In a PMBR different interfaces can be configured as DVMRP PIM SM or PIM DM interfaces PMBR is disabled by default in Supermicro switches Follow the steps below to enable PMBR Step Command Description Step 1 configure terminal Enters the configuration mode Step 2 set ip pim pmbr enable Enables or disables PMBR Step 3 end Exits the configuration mode Step 4 write startup config Optional step saves this PIM configuration to be part of the startup configuration O The set ip pim pmbr disable command disables PMBR functionality The example below shows the commands used to configure PIM PMBR SMIS configure terminal SMIS config set ip pim pmbr enable SMIS config end SMIS show ip pim interface detail vlan100 504 is up Internet address is 100 100 100 1 Muticast Switching Enabled PIM En
16. 5 5 5 S vlan10 Od 00 12 30 67 Od 00 00 00 00 0 0 0 0 SMIS show ip igmp interface vlan10 line protocol is up Internet Address is 10 10 10 10 8 Supermicro L2 L3 Switches Configuration Guide PIM Configuration Guide IGMP is enabled on interface Current IGMP router version is 2 IGMP query interval is 125 seconds Last member query response interval is 10 seconds IGMP max query response time is 100 seconds Robustness value is 2 IGMP querying router is 10 10 10 10 this system Fast leave is disabled on this interface Number of multicast groups joined 2 Display PIM static RP SMIS show ip pim rp static Static RP Enabled Compld GroupAddress Group Mask RPAddress 110 227 0 0 0 255 0 0 0 200 200 200 1 Display Multicast routing table SMIS show ip pim mroute IP Multicast Routing Table Route Flags S SPT Bit W Wild Card Bit R RPT Bit Timers Uptime Expires Interface State Interface State Mode PIM Multicast Routing Table For Component 110 227 1 1 1 00 14 20 RP 200 200 200 1 Incoming Interface vlan200 RPF nbr 200 200 200 1 Route Flags WR Outgoing InterfaceList vlan10 Forwarding Sparse 00 14 20 227 5 5 5 00 12 48 RP 200 200 200 1 Incoming Interface vlan200 RPF nbr 200 200 200 1 Route Flags WR Outgoing InterfaceList vlan10 Forwarding Sparse 00 12 48 Configuration on switch B configure Layer3 VLAN SMIS configure terminal SMIS config vlan 200
17. Hence other non RP routers need not maintain this information This also reduces unnecessary network flooding All routers in a PIM domain must have the same RP information for a particular group RP s in a PIM domain can be learned by a Bootstrap Router BSR mechanism or Static RP 1 12 2 1 Bootstrap Router BSR BSR distributes PIM RP information for all groups within the domain Each PIM domain can have only one elected BSR Several routers are configured as candidate BSRs the BSR with highest preference is elected as the router The elected RP s send their information to the BSR which maintains RP to group mapping as the RP set Supermicro switches provide flexibility for user to configure the BSR for individual interfaces Follow the steps below to configure the Bootstrap Router BSR Step Command Description Step 1 configure terminal Enters the configuration mode Step 2 interface lt interface type gt lt interface id gt Enters the interface configuration or mode interface range interface type lt interface id gt interface type may be any of the following gigabit ethernet gi extreme ethernet ex qx ethernet qx vlan interface id is in slot port format for all physical interfaces It may be the VLAN identifier for VLAN interfaces To configure multiple interfaces use the interface range command To provide a range use a hyphen between the start and end interfa
18. IP Multicast Routing Table Route Flags S SPT Bit W Wild Card Bit R RPT Bit Timers Uptime Expires Interface State Interface State Mode PIM Multicast Routing Table For Component 100 227 1 1 1 00 11 02 RP 200 200 200 1 Incoming Interface vlan200 RPF nbr NULL Route Flags WR Outgoing InterfaceList vlan200 Forwarding Sparse 00 11 02 00 00 00 227 5 5 5 00 09 29 RP 200 200 200 1 Incoming Interface vlan200 RPF nbr NULL Route Flags WR Outgoing InterfaceList vlan200 Forwarding Sparse 00 09 29 00 00 00 Supermicro L2 L3 Switches Configuration Guide Em
19. M information Step 5 write startup config Optional step saves this PIM configuration to be part of the startup configuration If PIM is enabled globally all PIM components are also automatically PIM enabled All PIM configuration and display commands operate only when PIM is enabled The example below shows the commands used to enable PIM SMIS configure terminal SMIS config set ip pim enable SMIS config end SMIS show ip pim component PIM Component Information Component ld 1 PIM Mode sparse PIM Version 2 Elected BSR 0 0 0 0 Candidate RP Holdtime 0 Supermicro L2 L3 Switches Configuration Guide EE PIM Configuration Guide 1 6 PIM Components and Interface Supermicro switches provide multiple instances of PIM in a router The PIM instances are referred to as PIM components Every component can be associated with one or more layer3 VLAN interface s and is identified by a component identifier Follow the steps below to create a PIM component s Step Command Description Step 1 configure terminal Enters the configuration mode Step 2 ip pim component Componentld 1 255 gt Creates the PIM component and enters the Component mode The Component Identifier value can be any number from 1 255 Default is 1 Step 3 interface interface type lt interface id gt Enters the interface configuration or mode interface range lt interface type gt lt interface id gt inte
20. P Hold time value The hold time value can be any number from 0 255 Default is 70 seconds Step 5 end Exits the configuration mode Step 6 show ip pim rp candidate Componentld lt 1 255 gt Displays the Candidate RP information for the given interface Step 7 write startup config Optional step saves this PIM configuration to be part of the startup configuration Supermicro L2 L3 Switches Configuration Guide PIM Configuration Guide The no ip pim rp candidate command deletes the candidate RP information of the particular PIM component The example below shows the commands used to configure the PIM Candidate RP Configure the PIM Candidate RP for PIM component 50 SMIS configure terminal SMIS config ip pim component 50 SMIS pim comp rp candidate holdtime 180 SMIS pim comp rp candidate rp address 228 0 0 0 255 0 0 0 100 100 100 1 SMIS pim comp end SMIS show ip pim rp candidate Compld GroupAddress Group Mask RPAddress Priority 50 228 0 0 0 255 0 0 0 100 100 100 1 192 1 12 2 3 Static RP An RP for a group range can be configured statically on a router instead of using a BSR mechanism However using this mechanism requires configuring static RP on all routers in the PIM domain This configuration can be useful to specify a backup RP for a particular group Supermicro switches provide flexibility for users to configure Static RP differently on different components F
21. SUPERMICR L2 L3 Switches Protocol Independent Multicast PIM Configuration Guide Revision 1 0 PIM Configuration Guide The information in this USER S MANUAL has been carefully reviewed and is believed to be accurate The vendor assumes no responsibility for any inaccuracies that may be contained in this document makes no commitment to update or to keep current the information in this manual or to notify any person organization of the updates Please Note For the most up to date version of this manual please see our web site at www supermicro com Super Micro Computer Inc Supermicro reserves the right to make changes to the product described in this manual at any time and without notice This product including software if any and documentation may not in whole or in part be copied photocopied reproduced translated or reduced to any medium or machine without prior written consent IN NO EVENT WILL SUPERMICRO BE LIABLE FOR DIRECT INDIRECT SPECIAL INCIDENTAL SPECULATIVE OR CONSEQUENTIAL DAMAGES ARISING FROM THE USE OR INABILITY TO USETHIS PRODUCT OR DOCUMENTATION EVEN IF ADVISED OF THE POSSIBILITY OF SUCHDAMAGES IN PARTICULAR SUPERMICRO SHALL NOT HAVE LIABILITY FOR ANY HARDWARE SOFTWARE OR DATA STORED OR USED WITH THE PRODUCT INCLUDING THE COSTS OFREPAIRING REPLACING INTEGRATING INSTALLING OR RECOVERING SUCH HARDWARE SOFTWARE OR DATA Any disputes arising between manufacturer and customer shall
22. abled PIMv6 Disabled PIM version 2 mode Sparse PIM DR 100 100 100 1 PIM DR Priority 1 PIM Neighbour Count 0 PIM Hello Query Interval 30 PIM Message Interval 60 PIM Override Interval 0 Supermicro L2 L3 Switches Configuration Guide PIM Configuration Guide PIM Lan Delay 0 PIM Lan Prune Delay Disabled PIM Component Id 50 PIM domain border enabled 1 11 Disabling PIM PIM is disabled by default in Supermicro switches Once enabled disabling PIM needs to be done globally Follow the steps below to disable PIM Step Command Description Step 1 configure terminal Enters the configuration mode Step 2 set ip pim disable Disables PIM globally Step 3 end Exits the configuration mode Step 4 write startup config Optional step saves this PIM configuration to be part of the startup configuration The example below shows the commands used to disable PIM SMIS configure terminal SMIS config set ip pim disable SMIS config end 1 12 PIM SM Specific Configuration This section covers Supermicro switch commands that are applicable only in PIM SM mode 1 12 1 PIM Join Prune 1 12 1 1 oin Prune Interval A PIM router sends Join messages periodically to upstream routers towards RP or source to keep the multicast tree active Periodic Prune messages are sent when existing receivers do not want multicast data This periodic time interval for sending Join Prune is called the Join Pru
23. ace configuration or mode interface range interface type interface id interface type may be any of the following gigabit ethernet gi extreme ethernet ex qx ethernet qx vlan interface id is in slot port format for all physical interfaces It may be the VLAN identifier for VLAN interfaces To configure multiple interfaces use the interface range command To provide a range use a hyphen between the start and end interface numbers E g int range gi 0 1 10 To provide multiple interfaces or ranges separate with a comma E g int range gi 0 1 10 gi 0 20 If multiple interfaces are provided the next step will perform the particular PIM configuration on all these interfaces Note While configuring PIM on physical interfaces gi ex qx make sure those interfaces are configured as layer 3 interfaces using the no switchport command in interface configuration mode Step 3 ip pim hello holdtime lt holdtime 1 65535 gt Configures Hello hold time value The Hello hold time value can be any number from 1 65535 Default is 30 seconds Step 4 end Exits the configuration mode Step5 show ip pim interface Vlan lt vlan id gt Displays the Hello hold time lt interface type gt lt interface id gt detail information for the given interface Step 6 write startup config Optional step saves this PIM configuration to be part of the startup configuration Supermicro
24. be governed by the laws of Santa Clara County in the State of California USA The State of California County of Santa Clara shall be the exclusive venue for the resolution of any such disputes Super Micro s total liability for all claims will not exceed the price paid for the hardware product FCC Statement This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the manufacturer s instruction manual may cause harmful interference with radio communications Operation of this equipment in a residential area is likely to cause harmful interference in which case you will be required to correct the interference at your own expense California Best Management Practices Regulations for Perchlorate Materials This Perchlorate warning applies only to products containing CR Manganese Dioxide Lithium coin cells Perchlorate Material special handling may apply See http www dtsc ca gov hazardouswaste perchlorate for further details Manual Revision 1 0 Release Date July 18 2013 Unless you request and receive written permission from Super Micro Computer Inc you may not copy any part of this document
25. ce numbers E g int range gi 0 1 10 To provide multiple interfaces or ranges separate with a comma E g int range gi 0 1 10 gi 0 20 Supermicro L2 L3 Switches Configuration Guide PIM Configuration Guide If multiple interfaces are provided the next step will perform the particular PIM configuration on all these interfaces Note While configuring PIM on physical interfaces gi ex qx make sure those interfaces are configured as layer 3 interfaces using the no switchport command in interface configuration mode Step 3 ip pim bsr candidate lt value 0 255 gt Configures the PIM BSR candidate The BSR candidate preference value can be any number from 1 to 255 Default is 1 Step 4 end Exits the configuration mode Step 5 show ip pim bsr Component Id 1 255 Displays the BSR candidate information for the given interface Step 6 write startup config Optional step saves this PIM configuration to be part of the startup configuration 9 The no ip pim bsr candidate command deletes the BSR information of the particular interface The example below shows the commands used to configure the PIM Candidate BSR Configure PIM Candidate BSR for layer3 VLAN 100 SMIS configure terminal SMIS config interface vlan 100 SMIS config if ip pim bsr candidate 155 SMIS config if end SMIS show ip pim bsr PIMv2 Bootstrap Configuration For Component 1 Elected BSR
26. configuration to be part of the startup configuration Components can be created only if PIM is enabled An interface can be associated with a Component Identifier only if a Component Identifier has already been created The no ip pim component Componentld command deletes the component and its associated details The example below shows the commands used to configure a PIM component SMIS configure terminal SMIS config ip pim component 50 SMIS pim comp end SMIS configure terminal SMIS config vlan 100 SMIS config vlan ports Gi 0 22 untagged SMIS config vlan end SMIS configure terminal SMIS config interface vlan 100 SMIS config if ip address 100 100 100 1 255 0 0 0 SMIS config if ip pim componentld 50 SMIS config if end SMIS show ip pim component PIM Component Information Supermicro L2 L3 Switches Configuration Guide PIM Configuration Guide Component ld 1 PIM Mode sparse PIM Version 2 Elected BSR 0 0 0 0 Candidate RP Holdtime 0 Component ld 50 PIM Mode sparse PIM Version 2 Elected BSR 0 0 0 0 Candidate RP Holdtime 0 SMIS show ip pim interface detail vlan100 504 is up Internet address is 100 100 100 1 Multicast Switching Enabled PIM Enabled PIMv6 Disabled PIM version 2 mode Sparse PIM DR 100 100 100 1 PIM DR Priority 1 PIM Neighbour Count 0 PIM Hello Query Interval 30 PIM Message Interval 60 PIM Override Interval 0 PIM Lan Delay 0
27. cro switches provide flexibility for user to configure different Join Prune override intervals on different interfaces Follow the steps below to configure the override interval Step Command Description Step 1 configure terminal Enters the configuration mode Step 2 interface interface type lt interface id gt Enters the interface configuration or mode interface range interface type interface id interface type may be any of the following gigabit ethernet gi extreme ethernet ex qx ethernet qx vlan interface id is in slot port format for all physical interfaces It may be the VLAN identifier for VLAN interfaces To configure multiple interfaces use the interface range command To provide a range use a hyphen between the start and end interface numbers E g int range gi 0 1 10 To provide multiple interfaces or ranges separate with a comma E g int range gi 0 1 10 gi 0 20 If multiple interfaces are provided the next step will perform the particular PIM configuration on all these interfaces Supermicro L2 L3 Switches Configuration Guide PIM Configuration Guide Note While configuring PIM on physical interfaces gi ex qx make sure those interfaces are configured as layer 3 interfaces using the no switchport command in interface configuration mode Step 3 ip pim override interval lt interval 0 65535 gt Configures the PIM
28. ee La eire cene RR Ro P M rb ERR RE CERES 19 UU cm m 20 11 Disabling PIM ioter ceteri see od eed VE a deae gere esed TER Eee E pe RR pee eee 21 1 12 PIM SM Specific Configuration cccccccccccssssccecsscececsesseecsesseeecseaaececsesseeeeceesaeceesesaeeeesesaeeeeesaes 21 s Pon RR P I e TI A STR rrDreeREREHRHHHHBEEEERHRHRHERBBBFRFBCEooE 21 112 2 Shared Tree R L nitet avete tdt ee A LL ID UE LI RU UIS 28 1 12 3 Shortest Path Tree SPU coe xay ra ee rie nin nre ee ee erae v ee nr eee ek e n k 33 1 13 PIM Configuration example iu keke keke kk e kaka keka kl ka kak KK kk KA A KA KA KA A KA A KA KAK KA KWA 38 Supermicro L2 L3 Switches Configuration Guide PIM Configuration Guide 1 PIM Configuration Guide This document describes the PIM feature supported in Supermicro Layer 2 Layer 3 switch products The PIM configurations for the Supermicro switch listed below products are covered Top of Rack Switches Blade Switches e SSE G24 TG4 e SBM GEM X2C e SSE G48 TG4 e SBM GEM X2C e SSE X24S e SBM GEM X3S e SSE X3348S e SBM XEM X10SM e SSE X3348T The majority of this document applies to the Supermicro switch products listed above In any particular sub section however the contents might vary across these switch product models In those sections the differences are clearly identified with reference to particular switch
29. face id is in slot port format for all physical interfaces It may be the VLAN identifier for VLAN interfaces To configure multiple interfaces use the interface range command To provide a range use a hyphen between the start and end interface numbers E g int range gi 0 1 10 To provide multiple interfaces or ranges separate with a comma E g int range gi 0 1 10 gi 0 20 If multiple interfaces are provided the next step will perform the particular PIM configuration on all these interfaces Note While configuring PIM on physical interfaces gi ex qx make sure those interfaces are configured as layer 3 interfaces using no switchport command in interface configuration mode Step 3 ip pim query interval Interval 0 65535 secs Configures PIM Hello interval value The Hello interval value can be any number from 0 65535 Default is 30 seconds Step 4 end Exits the configuration mode Step5 show ip pim interface Vlan vlan id Displays the Hello interval information interface type interface id detail for the given interface Step 6 write startup config Optional step saves this PIM configuration to be part of the startup configuration Supermicro L2 L3 Switches Configuration Guide PIM Configuration Guide 9 The no ip pim query interval command resets the query interval to its default value of 30 The example below shows t
30. he commands used to configure the PIM query interval Configure the PIM query interval for a layer3 VLAN 100 switch SMIS configure terminal SMIS config interface vlan 100 SMIS config if ip pim query interval 75 SMIS config if end SMIS show ip pim interface detail vlan100 504 is up Internet address is 100 100 100 1 Muticast Switching Enabled PIM Enabled PIMv6 Disabled PIM version 2 mode Sparse PIM DR 100 100 100 1 PIM DR Priority 1 PIM Neighbour Count 0 PIM Hello Query Interval 75 PIM Message Interval 60 PIM Override Interval 0 PIM Lan Delay 0 PIM Lan Prune Delay Disabled PIM Component Id 50 PIM domain border disabled 1 8 3 Hold Time Hold time is the neighbor timeout set for every neighbor on a PIM interface If a PIM Hello message is not received from a neighbor router for the period of the hold time then the neighbor will be deleted from the list of neighbors Hold time value is sent as an option in the PIM Hello message to neighbors The default hold time is 30 seconds Supermicro switches provide flexibility for users to configure different hold times on different interfaces Follow the steps below to change the hold time on any interface Step Command Description Step 1 configure terminal Enters the configuration mode Supermicro L2 L3 Switches Configuration Guide PIM Configuration Guide Step 2 interface lt interface type gt lt interface id gt Enters the interf
31. may be the VLAN identifier for VLAN interfaces To configure multiple interfaces use the interface range command To provide a range use a hyphen between the start and end interface numbers E g int range gi 0 1 10 To provide multiple interfaces or ranges separate with a comma E g int range gi 0 1 10 gi 0 20 If multiple interfaces are provided the next step will perform the particular PIM configuration on all these interfaces Note While configuring PIM on physical interfaces gi ex qx make sure those interfaces are configured as layer 3 interfaces using the no switchport command in interface configuration mode Step 3 set ip pim lan prune delay enable disable Configures the LAN prune delay value Supermicro L2 L3 Switches Configuration Guide PIM Configuration Guide ip pim lan delay lt value 0 65535 gt LAN prune delay is enabled by default The LAN prune delay value can be any number from 0 65535 Default is 0 Step 4 end Exits the configuration mode Step 5 show ip pim interface Vlan lt vlan id gt lt interface type gt lt interface id gt detail Displays the LAN prune delay information for the given interface Step 6 write startup config Optional step saves this PIM configuration to be part of the startup configuration O The no ip pim lan delay command resets the LAN delay to its default value of 0
32. multi access networks to delay the processing of prune messages received at upstream routers This ensures that there is no flapping of multicast data in a multi access LAN due to joins by some routers and prunes by other routers When an upstream router in a multi access LAN receives prune message from a downstream router it does not prune the tree immediately but instead maintains the tree for the duration of the LAN prune delay interval The tree is maintained only if a Join override message is received from another downstream router in the multi access LAN Otherwise the tree is pruned after the LAN Prune Delay interval Supermicro L2 L3 Switches Configuration Guide PIM Configuration Guide The default LAN delay flag is in the Enabled state The default value of the LAN prune delay is 0 seconds Supermicro switches provide flexibility for users to configure different LAN prune delays on different interfaces Follow the steps below to change the LAN prune delay on any interface Step Command Description Step 1 configure terminal Enters the configuration mode Step 2 interface interface type lt interface id gt Enters the interface configuration or mode interface range interface type interface id interface type may be any of the following gigabit ethernet gi extreme ethernet ex qx ethernet qx vlan interface id is in slot port format for all physical interfaces It
33. ne interval The default Join Prune interval is 60 seconds Supermicro switches provide flexibility for users to configure different Join Prune intervals on different interfaces Follow the steps below to change the Join Prune interval on any interface Supermicro L2 L3 Switches Configuration Guide PIM Configuration Guide Step Command Description Step 1 configure terminal Enters the configuration mode Step 2 interface interface type lt interface id gt Enters the interface configuration or mode interface range interface type interface id interface type may be any of the following gigabit ethernet gi extreme ethernet ex qx ethernet qx vlan interface id is in slot port format for all physical interfaces It may be the VLAN identifier for VLAN interfaces To configure multiple interfaces use the interface range command To provide a range use a hyphen between the start and end interface numbers E g int range gi 0 1 10 To provide multiple interfaces or ranges separate with a comma E g int range gi 0 1 10 gi 0 20 If multiple interfaces are provided the next step will perform the particular PIM configuration on all these interfaces Note While configuring PIM on physical interfaces gi ex qx make sure those interfaces are configured as layer 3 interfaces using the no switchport command in interface configuration mode Step 3
34. ollow the steps below to configure Static RP Step Command Description Step 1 configure terminal Enters the configuration mode Step 2 ip pim component Componentld 1 255 gt Enters the PIM component configuration mode Component Identifier may be any value from 1 to 255 Default is 1 Step 3 set ip pim static rp enable Static RP is disabled by default Use the enable form of this command to enable Static RP Step 4 rp static rp address Group Address Group Configures static RP value Mask gt lt IP address gt Group Address Group Mask This combination can specify any IP Multicast address from 224 0 0 0 to Supermicro L2 L3 Switches Configuration Guide PIM Configuration Guide 239 255 255 255 IP Address should be any interface IP address of the component Step 5 end Exits the configuration mode Step 6 show ip pim rp static Componentld lt 1 255 gt Displays the static RP information for the given interface Step 7 write startup config Optional step saves this PIM configuration to be part of the startup configuration The no ip pim rp static command deletes the static RP information of the particular component The example below shows the commands used to configure PIM Static RP Configure PIM Static RP for PIM component 50 SMIS config set ip pim static rp enable SMIS configure terminal SMIS config ip pim component 50 SMIS pim com
35. orts Membership in a multicast group is dynamic as hosts can join and leave at any time There is no restriction on the location or number of members in a multicast group A host can be a member of more than one multicast group at a time Supermicro switches can send and receive multicast traffic by supporting the following multicast features e IGMP at the access end of the network that processes hosts announcing their participation in a multicast group s e Multicast Routing Protocols MRPs at the enterprise and core of the network for maintaining the senders receivers database and forwarding data from senders to receivers Figure PIM 1 IP Multicast Routing Hosts Switch A Switch B Internet Backbone OO IGMP MRP MRP Supermicro L2 L3 Switches Configuration Guide PIM Configuration Guide 1 2 PIM Protocol Independent Multicast PIM is a Multicast Routing Protocol MRP used to maintain the Multicast distribution tree and to forward multicast data across the tree PIM is protocol independent since it works with any unicast routing protocols like RIP OSPF etc to get route information towards RP and source PIM neighbors are established by exchanging periodic Hello messages A Designated Router DR is chosen in the subnet connected to the receivers and this is the Last hop DR A DR is chosen in the subnet connected to the source this is the First hop DR The path from receivers to the source or RP i
36. override interval value The override interval value can be any number from 0 65535 Default is 0 Step 4 end Exits the configuration mode Step5 show ip pim interface Vlan lt vlan id gt Displays the override interval lt interface type gt lt interface id gt detail information for the given interface Step 6 write startup config Optional step saves this PIM configuration to be part of the startup configuration 9 The no ip pim override interval command resets the override interval to its default value of 0 The example below shows the commands used to configure the PIM override interval Configure the PIM override interval for layer3 VLAN 100 SMIS configure terminal SMIS config interface vlan 100 SMIS config if ip pim override interval 500 SMIS config if end SMIS show ip pim interface detail vlan100 504 is up Internet address is 100 100 100 1 Muticast Switching Enabled PIM Enabled PIMv6 Disabled PIM version 2 mode Sparse PIM DR 100 100 100 1 PIM DR Priority 1 PIM Neighbour Count 0 PIM Hello Query Interval 30 PIM Message Interval 60 PIM Override Interval 500 Supermicro L2 L3 Switches Configuration Guide PIM Configuration Guide PIM Lan Delay 0 PIM Lan Prune Delay Disabled PIM Component Id 50 PIM domain border disabled 1 12 2 Shared Tree RPT All routers send Join Prune information as well as active source information to the RP
37. p rp static rp address 230 0 0 0 255 0 0 0 100 100 100 1 SMIS pim comp end SMIS show ip pim rp static Static RP Enabled Compld GroupAddress Group Mask RPAddress 50 230 0 0 0 255 0 0 0 100 100 100 1 1 12 2 4Register Stop Rate Limit When a first hop DR receives a multicast packet it encapsulates it in a register message and unicasts it to the RP for that group The RP de encapsulates each register message and forwards the extracted data packet to the downstream members on the RPT If there are no receivers on the RP it then sends a register stop to the first hop DR as long as there are no receivers The register stop rate limit is used at the RP to limit the number of register stop messages sent per second to the first hop DR The default register stop rate limit is 0 Follow the steps below to configure the register stop rate limit Supermicro L2 L3 Switches Configuration Guide PIM Configuration Guide Step Command Description Step 1 configure terminal Enters the configuration mode Step 2 set ip pim regstop ratelimit period lt 0 Sets the Register Stop rate limit for 2147483647 in secs Group and Source The Register Stop rate limit interval can be any number from 0 2147483647 seconds Default is O seconds Step 3 end Exits the configuration mode Step 4 write startup config Optional step saves this PIM configuration to be part of the startup configuration The example belo
38. p DR building a SPT is called SPT switchover at Last hop DR Once SPT is established at the last hop DR the RPT is pruned and data is then received by SPT only Typically the SPT switchover occurs when a data rate threshold is reached which is configurable in Supermicro switches using e SPT switch period e SPT threshold 1 12 3 2 1 SPT Switch Period The Shortest Path Tree SPT switch period is used together with the SPT threshold to specify the time when the last hop router can switch over to Shortest Path Tree SPT The multicast data packet count is checked every SPT switch period interval and if it exceeds the SPT threshold the last hop router switches from RP tree to Shortest Path Tree SPT The Shortest Path Tree SPT switch period is disabled by default in Supermicro switches i e last hop routers switch to SPT immediately upon receipt of a multicast data packet Follow the steps below to configure the period for the Shortest Path Tree SPT switch Step Command Description Step 1 configure terminal Enters the configuration mode Step 2 set ip pim spt switchperiod 0 2147483647 in Sets the Shortest Path Tree SPT secs threshold for Group and Source The Number of packets can be any number from 0 2147483647 Default is O packets Step 3 end Exits the configuration mode Step 4 write startup config Optional step saves this PIM configuration to be part of the startup configuration
39. product models If any particular switch product model is not referenced the reader can safely assume that the content is applicable to all the above listed models O Throughout this document the common term switch refers to any of the above listed DE Supermicro switch product models unless a particular model is noted 1 1 IP Multicast Overview IP communication may be one of three types e Unicast Host sends packets to a single host e Broadcast Host sends packets to all hosts e Multicast Host sends packets to a subset of hosts simultaneously IP Multicast Routing enables efficient use of network resources for bandwidth intensive services including video and audio A multicast group is a set of receivers that want to receive a particular data stream An IP Multicast Group Address in the 224 0 0 0 to 239 0 0 0 is range selected for the receivers of Supermicro L2 L3 Switches Configuration Guide Ese PIM Configuration Guide a multicast group Senders transmit IP data using the multicast group address as the destination address to multicast to all group members Receivers interested in receiving data meant for a particular group must join the group by signaling a router switch on their subnet IGMP is used as the signaling protocol for communicating group membership Network devices that are present on the path between the source and the receivers forward data only on ports leading to the receivers rather than flooding all p
40. rface type may be any of the following gigabit ethernet gi extreme ethernet ex qx ethernet qx vlan interface id is in slot port format for all physical interfaces It may be the VLAN identifier for VLAN interfaces To configure multiple interfaces use the interface range command To provide a range use a hyphen between the start and end interface numbers E g int range gi 0 1 10 To provide multiple interfaces or ranges separate with a comma E g int range gi 0 1 10 gi 0 20 If multiple interfaces are provided the next step will perform the particular PIM configuration on all these interfaces Note While configuring PIM on physical interfaces gi ex qx make sure those interfaces are configured as Supermicro L2 L3 Switches Configuration Guide PIM Configuration Guide u layer 3 interfaces using the no switchport command in interface configuration mode Step 4 ip pim componentld lt value 1 255 gt Configures the Interface Component Identifier value The Component Identifier value can be any number from 1 255 Default is 1 Step 5 end Exits the configuration mode Step6 show ip pim interface Vlan vlan id Displays the component information for lt interface type gt lt interface id gt detail the given interface show ip pim component Componentld lt 1 255 gt Step 7 write startup config Optional step saves this PIM
41. rom RP tree to Shortest Path Tree SPT The RP threshold is disabled by default in Supermicro switches i e an RP will switch to SPT immediately upon receipt of a multicast data packet Follow the steps below to configure the RP threshold Step Command Description Step 1 configure terminal Enters the configuration mode Step 2 setip pim rp threshold lt number of packets 0 Sets the SPT threshold for Group and 2147483647 gt Source The number of packets can be any number from 0 2147483647 Default is O packets Step 3 end Exits the configuration mode Step 4 write startup config Optional step saves this PIM configuration to be part of the startup configuration The example below shows the commands used to configure the PIM RP threshold SMIS configure terminal SMIS config set ip pim rp threshold 50 SMIS config end SMIS show ip pim thresholds PIM SPT Threshold Information Group Threshold 0 Source Threshold 0 Switching Period 0 PIM SPT RP Threshold Information Register Threshold 50 RP Switching Period 0 Register Stop rate limit 5 Supermicro L2 L3 Switches Configuration Guide PIM Configuration Guide 1 12 3 2SPT at Last Hop DR When the last hop DR receives a multicast packet from the Shared Tree or RP Tree it sends an S G Join to the first hop DR to build a Source tree or Shortest Path Tree SPT back to the source This mechanism of last ho
42. s referred to as upstream The path from the source or RP towards the receivers is referred to as downstream There are two PIM modes Sparse PIM SM and Dense PIM DM 1 2 1 PIM SM Basics PIM Sparse mode operates on the basis that very few or sparse receivers intend to receive multicast data from each source In PIM SM multicast data is forwarded only on branches with at least one interested receiver Figure PIM 2 Multicast Forwarding with PIM SM Last Hop DR Source tree First Hop DR Source S G Shared tree G Shared tree G Receivers Intermediate Router PIM SM uses unicast routing protocol like OSPF RIP etc to perform a reverse path forwarding RPF check to determine upstream neighbors to source and or RP An RPF check helps to eliminate loops in Supermicro L2 L3 Switches Configuration Guide le PIM Configuration Guide multicast tree formations wherein the forwarding decision for a received packet is done based on the source address in the packet rather than destination address If a router has a route entry to the source address in the packet i e an upstream router the packet is forwarded as an RPF check passes Otherwise the packet is dropped as an RPF check failure PIM Sparse mode builds a shared tree or RPT with a root called a Rendezvous Point RP A Candidate RP CRP is then configured for every group by using a Bootstrap Router BSR mechanism
43. st Path Tree SPT The RP switch period is disabled by default in Supermicro switches i e an RP will switch to SPT immediately upon receipt of a multicast data packet Follow the steps below to configure RP switch period Step Command Description Step 1 configure terminal Enters the configuration mode Step 2 set ip pim rp switchperiod 0 2147483647 in Sets the RP switch period at RP secs The RP switch period can be any number from 0 2147483647 seconds Default is 0 seconds Step 3 end Exits the configuration mode Step 4 write startup config Optional step saves this PIM configuration to be part of the startup configuration The example below shows the commands used to configure the PIM RP switch period SMIS configure terminal SMIS config set ip pim rp switchperiod 300 SMIS config end SMIS show ip pim thresholds PIM SPT Threshold Information Group Threshold 0 Source Threshold 0 Switching Period 0 PIM SPT RP Threshold Information Register Threshold 0 RP Switching Period 300 Register Stop rate limit 5 Supermicro L2 L3 Switches Configuration Guide PIM Configuration Guide 1 12 3 1 2 RP Threshold The RP threshold is used together with the RP switch period to specify the time when the RP can switch over to Shortest Path Tree SPT The multicast data packet count is checked every RP switch period interval and if it exceeds the RP threshold the RP switches f
44. t set ip pim enable set ip pim static rp enable ip pim component 1 exit ip pim component 100 rp static rp address 227 0 0 0 255 0 0 0 200 200 200 1 exit interface vlan 200 ip pim componentld 100 exit Display PIM component SMIS show ip pim component PIM Component Information Component ld 1 PIM Mode sparse PIM Version 2 Elected BSR 0 0 0 0 Candidate RP Holdtime 0 Component ld 100 PIM Mode sparse PIM Version 2 Elected BSR 0 0 0 0 Candidate RP Holdtime 0 Display Static RP SMIS show ip pim rp static Static RP Enabled Compld GroupAddress Group Mask RPAddress 100 227 0 0 0 255 0 0 0 200 200 200 1 Display PIM neighbor information SMIS show ip pim neighbor Neighbour IfName Idx Uptime Expiry Ver DRPri Mode Compld Override Lan Supermicro L2 L3 Switches Configuration Guide PIM Configuration Guide Address Interval Delay 200 200 200 5 vlan200 504 00 21 19 84 v2 1 S 100 0 0 Display PIM Interface information SMIS show ip pim interface detail vlan200 504 is up Internet address is 200 200 200 1 Multicast Switching Enabled PIM Enabled PIMv6 Disabled PIM version 2 mode Sparse PIM DR 200 200 200 5 PIM DR Priority 1 PIM Neighbour Count 1 PIM Hello Query Interval 30 PIM Message Interval 60 PIM Override Interval O PIM Lan Delay 0 PIM Lan Prune Delay Disabled PIM Component Id 100 PIM domain border disabled Display Multicast routing table SMIS show ip pim mroute
45. t Retry Count 1 1 8 PIM Neighbor PIM routers exchange periodic Hello messages with routers that are directly connected These directly connected routers are the PIM neighbors PIM Hello messages contain different configurable options 1 8 1 DR Priority DR priority is used to determine the Designated Router in the subnet The Designated Router in the subnet is the router with highest DR priority As a last hop router the DR is responsible for forwarding joins to the upstream As a first hop router the DR is responsible for forwarding data to the downstream The default DR priority is 1 Supermicro switches provide flexibility for users to configure the DR priority for individual interfaces Users can configure a different DR priority on different interfaces Follow the steps below to change the Hello interval on any interface Step Command Description Supermicro L2 L3 Switches Configuration Guide PIM Configuration Guide Step 1 configure terminal Enters the configuration mode Step 2 interface lt interface type gt lt interface id gt Enters the interface configuration or mode interface range interface type interface id interface type may be any of the following gigabit ethernet gi extreme ethernet ex qx ethernet qx vlan interface id is in slot port format for all physical interfaces It may be the VLAN identifier for VLAN interfaces To configure m
46. tes to a source CRP and CBSR PIM uses this information for RPF checks PIM Defaults Parameter Default Value PIM SM global status Disabled Component identifier 1 Static RP status Disabled PMBR status Disabled Shortest Path Tree SPT threshold 0 packets RP threshold 0 packets Shortest Path Tree SPT switchover 0 seconds period RP switchover period 0 seconds Register stop rate limit period 5 seconds PIM Component Defaults Parameter Default Value PIM Component Mode Sparse CRP hold time 70 seconds CRP priority 192 Static RP None PIM Interface Defaults Parameter Default Value Hello hold time 30 seconds DR priority 1 Override interval 0 LAN prune delay status Enabled LAN prune delay 0 Hello interval 30 seconds Supermicro L2 L3 Switches Configuration Guide ET PIM Configuration Guide CBSR preference 1 Hello interval 60 seconds 1 5 Enabling PIM PIM is disabled by default in Supermicro switches PIM needs to be enabled globally for IP multicast operations Follow the steps below to enable PIM Step Command Description Step 1 configure terminal Enters the configuration mode Step 2 set ip pim enable Enables PIM globally PIM creates the default PIM Component Identifier 1 once PIM is enabled Step 3 end Exits the configuration mode Step 4 show ip pim component Displays the PI
47. ultiple interfaces use the interface range command To provide a range use a hyphen between the start and end interface numbers E g int range gi 0 1 10 To provide multiple interfaces or ranges separate with a comma E g int range gi 0 1 10 gi 0 20 If multiple interfaces are provided the next step will perform the particular PIM configuration on all these interfaces Note While configuring PIM on physical interfaces gi ex qx make sure those interfaces are configured as layer 3 interfaces using the no switchport command in interface configuration mode Step 3 ip pim dr priority priority 1 65535 Configures the PIM DR priority value The DR priority value can be any number from 1 65535 Default is 1 Step 4 end Exits the configuration mode Step5 show ip pim interface Vlan vlan id Displays the DR priority information for lt interface type gt lt interface id gt detail the given interface Step 6 write startup config Optional step saves this PIM configuration to be part of the startup configuration Supermicro L2 L3 Switches Configuration Guide PIM Configuration Guide 9 The no ip pim dr priority command resets the DR priority to its default value of 1 The example below shows the commands used to configure the PIM DR priority Configure PIM DR priority for layer3 VLAN 100 SMIS configure terminal SMIS config interface vlan 100 SMIS config if ip
48. w shows the commands used to configure the PIM register rate limit SMIS configure terminal SMIS config set ip pim regstop ratelimit period 100 SMIS config end SMIS show ip pim thresholds PIM SPT Threshold Information Group Threshold 0 Source Threshold 0 Switching Period 0 PIM SPT RP Threshold Information Register Threshold 0 RP Switching Period 0 Register Stop rate limit 100 1 12 3 Shortest Path Tree SPT 1 12 3 1SPT at RP When a first hop DR receives a multicast packet it encapsulates it in a register message and unicasts it to the RP for that group The RP de encapsulates each register message and forwards the extracted data packet to the downstream members on the RPT The RP then sends an S G Join to the first hop DR to build the Source Tree or Shortest Path Tree SPT back to the source This mechanism of RP building a SPT is called SPT switchover at RP Typically the SPT switchover occurs when a data rate threshold is reached which is configurable in Supermicro switches using Supermicro L2 L3 Switches Configuration Guide PIM Configuration Guide e RP switch period e RP threshold 1 12 3 1 1 RP Switch Period The RP switch period is used together with the RP threshold to specify the time when the RP can switch over to Shortest Path Tree SPT The multicast data packet count is checked every RP switch period interval and if it exceeds the RP threshold the RP switches from RP tree to Shorte
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