L2 / L3 Switches Internet Group Management Protocol
Contents
1. IGMP Configuration Guide 1 7 2 Maximum Query Response Time For every inclusion report received by the querier the particular interface entry is added in the IGMP group table for that particular group A group membership timeout is then started for each group interface entry in the IGMP group table The query response interval is used to calculate the group membership timeout Group membership timeout robustness value query interval max query response interval Once a query is received by the hosts they should respond with IGMP reports within the max query response time The querier deletes the hosts interface entry from the IGMP group table if no reports are received from the host by the time the group membership timeout is reached The default query max response time is 100 seconds Supermicro switches provide flexibility for users to configure different query max response times on different interfaces Follow the steps below to change the query max response on any interface 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 lt interface type gt 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 i2. IGMP is enabled on the interface Current IGMP router version is 2 IGMP query interval is 125 seconds Last member query response interval is 10 1 10 seconds IGMP max query response time is 100 1 10 seconds Robustness value is 5 IGMP querying router is 20 20 20 1 Fast leave is disabled on this interface No multicast groups joined Supermicro L2 L3 Switches Configuration Guide
3. 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 O 2013 by Super Micro Computer Inc All rights reserved Printed in the United States of America Supermicro L2 L3 Switches Configuration Guide IGMP Configuration Guide Contents 1 IGMP Configuration Guide veo a iia 4 1 1 ANO A k b aland d la a na kb d k dilan ad n Hada E dbn d ed d ze nau ka d na k D 4 1 2 _aZzTrrorUUreeii mi iii0ypnppn HH E E EEE 6 1 3 IGMP SUPPOME kii ironiseen ia a aaea k ua usados dws hd k ka k da a dake dab E REAREA EENS Va ad 7 1 4 IGMP Defaults m s 2 irdni layek Naka n ERA ky nai A REK MANA HMI REN NA Ga N 7 1 5 Enabling IGMP secta _c_ mmmmmmm rmn 7 1 6 lela SL ere rhrhrrrrrrrr r e e rrr Smee ieee een 9 1 7 IGMP query and report i 2 12 4 x 4 54545a2y554ssasp s 5a iranton Us n see sn ewe EVEEN iv sn eh 532 W ANAK NO 11 1 7 1 Query Intervalo ia sta 11 1 7 2 Maximum query response t n kk k kake kake KEKE KA KAKA KEK kK KA KA KAKA KA KA KA KA KA KA 14 1 7 3 Robustness Valle s xi n aida 16 1 8 Leaving Multicast Gr Uji i 455 45 454445340052a5on so 4ane xer k npea rAr aA r WAK Kay n AN Ku N PA nA kU N K W AHAN NA e 18 1 8 1 Last member Query Inte
4. or mode interface range lt interface type gt 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 hypen 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 enable IGMP on all these interfaces Note While configuring IGMP on physical interfaces gi ex qx make sure those interfaces are configured as Supermicro L2 L3 Switches Configuration Guide IGMP Configuration Guide u layer 3 interfaces using the no switchport command in the interface configuration mode Step 3 ip igmp last member query interval lt value gt Configures the last member query interval The last member query interval value can be any number from 1 255 seconds Default is 2 seconds Step 4 end Exits the configuration mode Step5 show ip igmp interface lt interface type gt Displays the IGMP last member query lt interface id gt interval information for the given interface s Step 6 write startup config
5. querier present interval Robustness value query interval 0 5 query response interval e Last member query count Number of group specific queries sent before the router assumes that there are no local members of a group The number of queries is equal to the robustness value In IGMPv3 devices send a state change report whenever the interface state changes The number of times a state change report is retransmitted is equal to the robustness value minus one The default robustness value is 2 You should increase this value if the subnet is expected to lose packets Supermicro switches provide flexibility for users to configure different robustness value on different interfaces Follow the steps below to change the robustness value on any interface 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 lt interface type gt 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 Supermicro L2 L3 Switches Configuration Guide IGMP Configuration Guide physical interfaces It may be the VLAN identifier for VLAN interfaces To configure multiple interfaces use the interface range command To pro
6. 0 SMIS config if ip igmp robustness 10 SMIS config if end SMIS show ip igmp interface vlan10 line protocol is up Internet address is 2 2 2 2 8 IGMP is enabled on the 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 10 IGMP querying router is 2 2 2 2 this system Fast leave is disabled on this interface No multicast groups joined 1 8 Leaving a Multicast Group Host computers leave multicast groups either silently or by sending IGMP leave messages Switches monitor the IGMP leave messages sent by host computers When a switch receives an IGMP leave message for any group on an interface it does not immediately delete the interface from the group entry on the multicast table Instead the switch sends an IGMP group specific query message on the interface that received the IGMP leave message If there are any other IGMP hosts on that interface that joined the same multicast group the switch will receive an IGMP member report as a response If no hosts respond on that interface the switch will assume that no other IGMP hosts are connected on that interface for the same group and will delete the corresponding interface from the group entry on the multicast table O Switches follow the above process only for IGMP version 2 leave messages The following parameters are used to control the l
7. 00 seconds Robustness value is 2 IGMP querying router is 2 2 2 2 this system Fast leave is disabled on this interface No multicast groups joined Supermicro L2 L3 Switches Configuration Guide IGMP Configuration Guide 1 11 IGMP Configuration Example Configure the following requirements as shown below in Figure IGMP 3 Switch A 1 Enable IGMP 2 Configure the static multicast group and source on VLAN10 3 Configure the immediate leave and query interval 4 Verify the IGMP group table Switch B 1 Enable IGMP 2 Verify the IGMP group table 3 Configure the robustness value Figure IGMP 3 IGMP Configuration Example Gi 0 1 Switch A Switch B VLAN 10 dl Gi 0 24 Gi 0 24 Trunk po 1 Native VLAN 20 225 1 1 1 Receiver Hosts Source 200 1 1 1 for Group 225 1 1 1 When an MRP such as PIM is enabled on interfaces between Switch A and Switch B traffic will flow from source 200 1 1 1 to the receivers for group 225 1 1 1 Supermicro L2 L3 Switches Configuration Guide IGMP Configuration Guide IGMP Configuration on Switch A Create Layer3 VLAN interface SMIS config vlan 10 SMIS config vlan ports Gi 0 1 untagged SMIS config vlan exit SMIS config interface vlan 10 SMIS config if ip address 10 10 10 10 255 0 0 0 SMIS config if exit SMIS config vlan 20 SMIS config vlan ports Gi 0 24 untagged SMIS config vlan exit SMIS config interface vlan 20 SMI
8. 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 2 2 2 2 this system Fast leave is disabled on this interface Number of multicast groups joined 2 Supermicro L2 L3 Switches Configuration Guide IGMP Configuration Guide 1 10 Disabling IGMP IGMP is disabled by default in Supermicro switches If a user needs to disable IGMP after it s already been enabled it must be disabled globally as well as individually in the interfaces Follow the steps below to disable IGMP Step Command Description Step 1 configure terminal Enters the configuration mode Step 2 set ip igmp disable Disables IGMP globally Step 3 interface lt interface type gt lt interface id gt Enters the interface configuration or mode interface range lt interface type gt 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 hypen between the start and end interface numbers E g int range gi 0 1 10 To provide multiple interfaces or ranges separate with a co
9. F Forward List N Non Forward List GroupAddress Iface SrcAddress Flg ExpiryTime LastReporter 225 1 1 1 vlan10 200 1 1 1 ISF 0d 00 00 00 00 10 10 10 10 IGMP Configuration on Switch B Create layer3 VLAN interface SMIS config vlan 20 SMIS config vlan ports Gi 0 24 untagged SMIS config vlan exit SMIS config interface vlan 20 SMIS config if ip address 20 20 20 5 Enable IGMP on layer3 VLAN interface SMIS config if set ip igmp enable SMIS config if ip igmp robustness 5 SMIS config if exit Enable IGMP globally SMIS config set ip igmp enable Supermicro L2 L3 Switches Configuration Guide IGMP Configuration Guide 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 3 ip address dhcp vlan 1 ports gi 0 1 23 untagged ports ex 0 1 3 untagged exit vlan 20 ports gi 0 24 untagged exit interface vlan 20 ip address 20 20 20 5 255 0 0 0 set ip igmp enable ip igmp robustness 5 exit set ip igmp enable Save this IGMP configuration SMIS write startup config Building configuration Please wait May take a few minutes OK HDisplay IGMP global configuration SMIS config show ip igmp global config IGMP is globally enabled HDisplay IGMP interface information SMIS config show ip igmp interface vlan20 line protocol is up Internet address is 20 20 20 5 8
10. GMP Global Configuration SMIS config show ip igmp global config IGMP is globally enabled Display IGMP interface information SMIS config show ip igmp interface vlan10 line protocol is up Internet Address is 10 10 10 10 8 IGMP is enabled on interface Current IGMP router version is 3 IGMP query interval is 60 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 enabled on this interface Number of multicast groups joined is 1 vlan20 line protocol is up Supermicro L2 L3 Switches Configuration Guide IGMP Configuration Guide Internet address is 20 20 20 1 8 IGMP is enabled on the 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 20 20 20 1 this system Fast leave is disabled on this interface No multicast groups joined Display IGMP group information SMIS config show ip igmp groups Include Mode E Exclude Mode S Static Mbr D Dynamic Mbr GroupAddress Flg Iface UpTime ExpiryTime LastReporter 225 1 1 1 IS vlan10 Od 00 35 06 25 Od 00 00 00 00 10 10 10 10 Display IGMP source information SMIS config show ip igmp sources Include Mode E Exclude Mode S Static Mbr D Dynamic Mbr
11. IP address otherwise it continues to remain the non querier on the subnet The querier switch is in charge of sending periodic query messages on the network to determine the presence of any new hosts Hosts respond to query message from the querier with IGMP report messages which indicate inclusion or exclusion in a particular multicast group address The querier consolidates the reports from all hosts and maintains them in an IGMP group table There are various parameters that control the query and report messages Query Interval This configures the time interval between transmissions of query messages by the querier Max Response Time This configures the maximum time interval in which the querier will wait to receive reports from the hosts Robustness Value This parameter tunes certain intervals used in IGMP protocol and also determines the retransmissions of IGMPv3 report messages to prevent their loss in a network 1 7 1 Query Interval The IGMP querier sends IGMP queries periodically to determine if there are any new hosts This periodic time interval is called the query interval The default query interval is 125 seconds Supermicro L2 L3 Switches Configuration Guide IGMP Configuration Guide Supermicro switches provide flexibility for users to configure different query interval on different interfaces Follow the steps below to change the query interval on any interface Step Command Description S
12. Optional step saves this IGMP configuration to be part of the startup configuration The no ip igmp last member query interval command resets the last member query O interval value to its default value of 10 seconds The last member query interval should be configured only on an IGMPv2 or IGMPv3 interface The example below shows the commands used to configure the last member query interval time Configure the last member query interval time as 250 seconds for layer3 VLAN10 SMIS config configure terminal SMIS config interface vlan 10 SMIS config if ip igmp last member query interval 250 SMIS config if end SMIS show ip igmp interface vlan10 line protocol is up Internet address is 2 2 2 2 8 IGMP is enabled on interface Current IGMP router version is 2 IGMP query interval is 125 seconds Last member query response interval is 250 seconds IGMP max query response time is 100 seconds Robustness value is 2 IGMP querying router is 2 2 2 2 this system Fast leave is disabled on this interface No multicast groups joined Supermicro L2 L3 Switches Configuration Guide IGMP Configuration Guide 1 8 2 Immediate Leave A switch can be configured to immediately remove the interface from the group entry on the multicast table when any interface receives an IGMP leave message without sending out group specific query messages This function is called immediate leave and it is configurable per int
13. S config if ip address 20 20 20 1 255 0 0 0 SMIS config if exit Enable IGMP on interface SMIS config interface vlan 10 SMIS config if set ip igmp enable SMIS config if ip igmp version 3 SMIS config if ip igmp immediate leave SMIS config if ip igmp query interval 60 SMIS config if ip igmp static group 225 1 1 1 source 200 1 1 1 SMIS config if exit SMIS config interface vlan 20 SMIS config if set ip igmp enable SMIS config if exit Enable IGMP globally SMIS config set ip igmp enable 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 Supermicro L2 L3 Switches Configuration Guide IGMP Configuration Guide exit vlan 20 ports gi 0 24 untagged exit interface vlan 1 ip address dhcp interface vlan 10 ip address 10 10 10 10 255 0 0 0 set ip igmp enable ip igmp immediate leave ip igmp version 3 ip igmp query interval 60 ip igmp static group 225 1 1 1 source 200 1 1 1 interface vlan 20 ip address 20 20 20 1 255 0 0 0 set ip igmp enable exit set ip igmp enable Save this IGMP configuration SMISH write startup config Building configuration Please wait May take a few minutes OK SMIS Display I
14. SUPERMICRO L2 L3 Switches Internet Group Management Protocol IGMP Configuration Guide Revision 1 0 IGMP 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 sha
15. d gt information for the given interface Step 7 write startup config Optional step saves this IGMP configuration to be part of the startup configuration The no ip igmp query interval command resets the IGMP query interval to ts default value of 125 The example below shows the commands used to configure the IGMP query interval Configure IGMP query interval for layer3 VLAN 10 SMIS config configure terminal SMIS config interface vlan 10 SMIS config if ip igmp query interval 500 SMIS config if end SMIS show ip igmp interface vlan10 line protocol is up Internet address is 2 2 2 2 8 IGMP is enabled on the interface Current IGMP router version is 2 IGMP query interval is 500 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 2 2 2 2 this system Fast leave is disabled on this interface No multicast groups joined SMIS show ip igmp statistics IGMP statistics for vlan10 Number of general queries received 0 Number of group specific queries received 0 Number of group and source Specific queries received 0 Number of v1 v2 reports received 0 Number of v3 reports received 0 Number of v2 leaves received 0 Number of general queries transmitted 32 Number of group specific queries transmitted 0 Number of group and source specific queries transmitted 0 Supermicro L2 L3 Switches Configuration Guide
16. default there are no static multicast memberships Follow the steps below to configure static group and source membership Step Command Description Supermicro L2 L3 Switches Configuration Guide IGMP 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 lt interface type gt 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 hypen 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 enable IGMP on all these interfaces Note While configuring IGMP 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 igmp static group lt Group Address gt source Enables the IGMP static group lt Source Address gt membership Group Mention the IP address of the
17. eave message handling procedure in Supermicro switches Group Query Interval This configures the amount of time a switch will wait to get response for its group specific queries from IGMP hosts Immediate Leave This configures the switch to have the host leave immediately instead of sending group specific query messages to look for other IGMP hosts on the interface that received an IGMP leave message These parameters can be configured as explained below Supermicro L2 L3 Switches Configuration Guide IGMP Configuration Guide 1 8 1 Last Member Query Interval Switches send group specific query messages on the interface that received an IGMP leave message Switches wait for the group query interval time to get a response from the hosts for its group specific query messages If they receive any host member report as a response they will drop the leave message received earlier on that interface If they do not receive any response from hosts for a group query interval time the switches will remove the interface from the group entry in the multicast forwarding table Users can configure this last member query interval The default last member query interval is 10 seconds Follow the steps below to configure the last member query interval 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
18. ep5 show ip igmp interface lt interface type gt Displays the IGMP immediate leave lt interface id gt information for the given interface Step 6 write startup config Optional step saves this IGMP configuration to be part of the startup configuration The no ip igmp immediate leave command can be used to disable the immediate leave function for any VLAN Immediate leave should be configured only on an IGMPv2 interface The example below shows the commands used to enable the immediate leave function Enable the immediate leave for Layer3 VLAN 10 SMIS config configure terminal SMIS config interface vlan 10 SMIS config if ip igmp immediate leave SMIS config if end SMIS show ip igmp interface vlan10 line protocol is up Internet address is 2 2 2 2 8 IGMP is enabled on the 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 2 2 2 2 this system Fast leave is enabled on this interface No multicast groups joined 1 9 Static Multicast Group Membership IGMP group membership can be configured statically on an interface The static IGMP group entries are used to statically forward multicast data on a particular interface The entries in the static group membership table exist without any timeout and need to be explicitly deleted By
19. erface basis Immediate leave is disabled by default in all interfaces Follow the steps below to enable immediate leave for any interface Step Command Description Step 1 configure terminal Enters the configuration mode Step 2 interface lt interface type gt lt interface id gt or interface range lt interface type gt lt interface id gt Enters the interface configuration mode 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 hypen 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 enable IGMP on all these interfaces Note While configuring IGMP 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 igmp immediate leave Enables IGMP immediate leave Step 4 end Exits the configuration mode Supermicro L2 L3 Switches Configuration Guide IGMP Configuration Guide St
20. ll 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 hittp www dtsc ca gov hazardouswaste perchlorate for further details Manual Revision 1 0 Release Date July 15 2013 Unless you request and receive written permission from Super Micro Computer Inc you may not copy any part of this document
21. mma E g int range gi 0 1 10 gi 0 20 If multiple interfaces are provided the next step will enable IGMP on all these interfaces Note While configuring IGMP on physical interfaces gi ex qx make sure those interfaces are configured as layer 3 interfaces using no switchport command in interface configuration Supermicro L2 L3 Switches Configuration Guide IGMP Configuration Guide mode Step 4 set ip igmp disable Disables IGMP in VLAN Step 5 end Exits the configuration mode Step 6 show ip igmp global config Displays the IGMP information show ip igmp interface lt interface type gt lt interface id gt Step 7 write startup config Optional step saves this IGMP configuration to be part of the startup configuration The example below shows the commands used to disable IGMP Disable the IGMP function assuming a layer3 VLAN 10 switch SMIS config configure terminal SMIS config set ip igmp disable SMIS config end SMIS show ip igmp global config IGMP is globally disabled SMIS config configure terminal SMIS config interface vlan 10 SMIS config if set ip igmp disable SMIS config if end SMIS show ip igmp interface vlan10 line protocol is up Internet address is 2 2 2 2 8 IGMP is disabled 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 1
22. multicast group in dotted decimal notation Source optional Mention the IP address of the source in dotted decimal notation Step 4 end Exits the configuration mode Step 5 show ip igmp groups Displays the IGMP group membership information Supermicro L2 L3 Switches Configuration Guide IGMP Configuration Guide show ip igmp sources Step 6 write startup config Optional step saves this IGMP configuration to be part of the startup configuration The no ip igmp static group lt Group Address gt source lt Source Address gt command can be used to remove a statically configured group and source from an interface The source option should be used only on an IGMPv3 interface The example below shows the commands to configure IGMP Static group membership Configure IGMP Static group membership for layer3 VLAN 10 SMIS config configure terminal SMIS config interface vlan 10 SMIS config if ip igmp static group 225 5 5 5 SMIS config if ip igmp static group 235 1 1 1 SMIS config if end SMIS show ip igmp groups Include Mode E Exclude Mode S Static Mbr D Dynamic Mbr GroupAddress Flg Iface UpTime ExpiryTime LastReporter 225 5 5 5 S vlan10 0d 00 00 06 17 Od 00 00 00 00 0 0 0 0 235 1 1 1 S vlan10 0d 01 20 01 36 Od 00 00 00 00 0 0 0 0 SMIS show ip igmp interface vlan10 line protocol is up Internet address is 2 2 2 2 8 IGMP is enabled on the interface
23. nfig end SMIS show ip igmp global config IGMP is globally enabled configuration to be part of the startup configuration Supermicro L2 L3 Switches Configuration Guide ETI IGMP Configuration Guide SMIS config configure terminal SMIS config interface vlan 10 SMIS config if set ip igmp enable SMIS config if end SMIS show ip igmp interface vlan10 line protocol is up Internet address is 2 2 2 2 8 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 2 2 2 2 this system Fast leave is disabled on this interface No multicast groups joined 1 6 IGMP Version The IGMP protocol standard has three versions v1 v2 and v3 Supermicro switches support IGMP for all three versions Supermicro IGMP support interoperates with different IGMP versions as defined in the standard IGMP protocol The default IGMP version is v2 which is compatible with IGMP versions 1 and 3 Supermicro switches provide the flexibility for users to configure different IGMP versions on different interfaces Follow the steps below to change the IGMP version on any interface Step Command Description Step 1 configure terminal Enters the configuration mode Step 2 interface lt interface type gt lt interface id gt or interface
24. nterface range lt interface type gt lt interface id gt interface type may be any of the following gigabit ethernet gi extreme ethernet ex Supermicro L2 L3 Switches Configuration Guide IGMP Configuration Guide 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 hypen 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 enable IGMP on all these interfaces Note While configuring IGMP 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 4 set ip igmp enable Enables IGMP on interface Step 5 end Exits the configuration mode Step 6 show ip igmp global config Displays the IGMP information show ip igmp interface lt interface type gt lt interface id gt Step 7 write startup config Optional step saves this IGMP The example below shows the commands used to enable IGMP Enable IGMP for layer3 VLAN 10 SMIS config configure terminal SMIS config set ip igmp enable SMIS co
25. nterfaces It may be the VLAN identifier for VLAN interfaces To configure multiple interfaces use the interface range command To provide a range use a hypen 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 enable IGMP on all these Supermicro L2 L3 Switches Configuration Guide IGMP Configuration Guide interfaces Note While configuring IGMP 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 igmp query max response time lt value gt Configures IGMP query max response time The value of query max response time is 1 255 seconds Default is 100 seconds Step 5 end Exits the configuration mode Step6 show ip igmp interface lt interface type gt Displays the IGMP query max response lt interface id gt time information for the given interface Step 7 write startup config Optional step saves this IGMP configuration to be part of the startup configuration The no ip igmp query max response time command resets the query max response time to its default of 100 Configure query max response times only on the IGMPv2 interface The example below sho
26. range lt interface type gt lt interface id gt Enters the interface configuration mode 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 Supermicro L2 L3 Switches Configuration Guide E IGMP Configuration Guide identifier for VLAN interfaces To configure multiple interfaces use the interface range command To provide a range use a hypen 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 enable IGMP on all these interfaces Note While configuring IGMP 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 igmp version 1 2 3 Configures IGMP version Step 5 end Exits the configuration mode Step6 show ip igmp interface lt interface type gt Displays the IGMP version information lt interface id gt for the given interface Step 7 write startup config Optional step saves this IGMP configuration to be part of the startup configuration O The no ip igmp version command resets the IGMP ve
27. rsion to its default value of 2 The example below shows the commands used to configure different versions of IGMP Configure IGMP version 3 for layer3 VLAN 10 SMIS configure terminal SMIS config interface vlan 10 SMIS config if ip igmp version 3 SMIS config if end Supermicro L2 L3 Switches Configuration Guide IGMP Configuration Guide SMIS show ip igmp interface vlan10 line protocol is up Internet address is 2 2 2 2 8 IGMP is enabled on the interface Current IGMP router version is 3 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 2 2 2 2 this system Fast leave is disabled on this interface No multicast groups joined 1 7 IGMP Queries and Reports When IGMP is enabled in a Supermicro switch it assumes itself as the querier As long as the switch does not receive an IGMP query from another multicast router in the subnet with an IP address lower than itself it continues to be the IGMP querier on the subnet If a Supermicro switch acting as querier receives a query from another multicast router on the subnet with an IP address lower than itself then the switch transitions to a non querier role and resets a timer based on value of its querier timeout Upon expiration of the querier timer a Supermicro switch transitions to querier again if there are no queries from the router with lower
28. rval Ei kek d 19 1 8 2 Immediate Leave oia 21 1 9 Static Multicast Group MemberShip ccooococcconccnncnonocononanononcnnnnnncnnnnnnncnnnnnnncnononannccnnn KAKA KA KAKA KA KA KA RR 22 1 10 Disabling IGMP nepise xir l k kek lees 25 1 11 IGMP Configuration Xalip l iii A 27 Supermicro L2 L3 Switches Configuration Guide IGMP Configuration Guide 1 IGMP Configuration Guide This document describes the IGMP feature supported in Supermicro Layer 2 Layer 3 switch products The IGMP configurations for the below listed Supermicro switch 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 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 Supermicro switch product models unless a particular switch product model is noted 1 1 IP Multicast Overview IP communication may be one of three t
29. tep 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 lt interface type gt 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 hypen 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 enable IGMP on all these interfaces Note While configuring IGMP 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 igmp query interval lt value gt Configures IGMP query interval The query interval value can be 1 65535 seconds Default is 125 seconds Step 5 end Exits the configuration mode Supermicro L2 L3 Switches Configuration Guide IGMP Configuration Guide Step6 show ip igmp interface lt interface type gt Displays the IGMP query interval lt interface i
30. their participation in a multicast group s e Multicast Routing Protocol s MRP s at the enterprise and core of the network for maintaining the senders receivers database and forwarding data from senders to receivers Figure IGMP 1 IP Multicast Routing Hosts Switch A Switch B E Internet Backbone hz 5 is IGMP MRP MRP Supermicro L2 L3 Switches Configuration Guide IGMP Configuration Guide 1 2 IGMP Basics IGMP is an IPv4 protocol used by hosts to request multicast data for a particular group A switch performs the IGMP function by e Sending IGMP query messages to identify receivers interested in particular multicast group s IGMP queries are sent only by a querier e Processing IGMP report messages from hosts in response to the query message from the querier Switches maintain a multicast forwarding table based on the hosts joined for every multicast group and updates the multicast forwarding table when hosts leave multicast groups In Figure IGMP 2 the querier switch sends an IGMP General Query message on the LAN Host1 and Host2 respond to the query with the IGMP report for G1 Group membership Figure IGMP 2 Multicast Forwarding with IGMP Switch Querier Switch Non Querier General Query General Query Membership Membership report for G1 report for G1 Host 1 Host 2 Host 3 There are 3 versions of IGMP The basic differences between the versions are IGMP v1 Supports basic quer
31. vide a range use a hypen 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 enable IGMP on all these interfaces Note While configuring IGMP 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 igmp robustness lt value gt Configures the IGMP robustness value The robustness value can be any number from 1 255 seconds Default is 2 seconds Step 5 end Exits the configuration mode Step6 show ip igmp interface lt interface type gt Displays the IGMP robustness lt interface id gt information for the given interface Step 7 write startup config Optional step saves this IGMP configuration to be part of the startup configuration O The no ip igmp robustness command resets the robustness value to its default value of 2 Configure the robustness value only on IGMPv2 and IGMPv3 interfaces The example below shows the commands to configure the IGMP query maximum response time Configure IGMP robustness value for layer3 VLAN 10 SMIS config configure terminal Supermicro L2 L3 Switches Configuration Guide IGMP Configuration Guide SMIS config interface vlan 1
32. ws the commands used to configure IGMP query maximum response time Configure IGMP query maximum response time for layer3 VLAN 10 SMIS config configure terminal SMIS config interface vlan 10 SMIS config if ip igmp query max response time 255 SMIS config if end SMIS show ip igmp interface vlan10 line protocol is up Internet address is 2 2 2 2 8 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 255 seconds Supermicro L2 L3 Switches Configuration Guide IGMP Configuration Guide Robustness value is 2 IGMP querying router is 2 2 2 2 this system Fast leave is disabled on this interface No multicast groups joined 1 7 3 Robustness Value The robustness value can be fine tuned to allow for expected packet losses on a subnet The value of this variable affects certain IGMP message intervals for IGMPv2 and IGMPv3 as specified below e Group membership interval Amount of time that must pass before a multicast router determines that there are no more members of a group on a network Group membership interval Robustness value query interval query response interval e Other querier present interval The robustness value is used to calculate the amount of time that must pass before a multicast router determines that there is no longer another multicast router that is the querier Other
33. y response mechanism to identify active multicast group s IGMP v2 Extends v1 with features like querier elections IGMP leaves group specific queries and maximum response time fields IGMP v3 In addition to IGMP v1 and IGMPv2 features provides support for source specific queries and reports Supermicro L2 L3 Switches Configuration Guide ER IGMP Configuration Guide Supermicro switches acts as a querier by default as long as it is a multicast router with a lower IP address on the subnet 1 3 IGMP Support Supermicro switches support IGMP for all three IGMP versions 1 2 and 3 Supermicro switches support up to 255 multicast groups 1 4 IGMP Defaults Parameter Default Value IGMP global status Disabled IGMP status in VLAN Disabled IGMP version 2 Query interval 125 seconds Query max response time 100 seconds Robustness value 2 Last member query interval 10 seconds Immediate leave fast leave Disabled Static multicast group membership None 1 5 Enabling IGMP IGMP is disabled by default in Supermicro switches IGMP must be enabled globally and individually in interfaces Follow the steps below to enable IGMP Step Command Description Step 1 configure terminal Enters the configuration mode Step 2 set ip igmp enable Enables IGMP globally Step 3 interface lt interface type gt lt interface id gt Enters the interface configuration or mode i
34. ypes 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 range 224 0 0 0 to 239 0 0 0 is selected for receivers in a Supermicro L2 L3 Switches Configuration Guide a IGMP Configuration Guide 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 of a particular group must join the group by signaling a router switch on their subnet IGMP is used as the signaling protocol for conveying group membership Network devices along the path from source to receivers forward data only on those ports leading to the receivers rather than flooding all ports 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 In addition 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
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