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DELL PowerConnect M6220

1. CONFIRMING A SUCCESSFUL STATIC VLAN CONFIGURATION WITH CISCO CATOS CONFIGURING THE M6220 EXTERNAL PORTS FOR DYNAMIC ig VLANS USING GVRP CONFIGURING A CISCO CATOS BASED ETHERNET SWITCH 50 FOR DYNAMIC VLANS CONFIGURING A CISCO IOS ETHERNET SWITCH FOR DYNAMIC VLANS 21 CONFIRMING A SUCCESSFUL GVRP COMMUNICATION WITH THE M6220 21 CONFIRMING A SUCCESSFUL GVRP COMMUNICATION WITH 35 CISCO CATOS CONFIRMING A SUCCESSFUL VLAN CONNECTION WITH CISCO IOS 22 VLANS AND LINK AGGREGATION GROUPS 22 VLANS AND SPANNING TREE ON THE M6220 26 COMPARING ACCESS TRUNK AND GENERAL MODES ON THE M6220 26 CONCLUSION 27 ABOUT THE AUTHOR 27 FIGURES FIGURE 1 DELL POWERCONNECT M6220 NETWORKING ARCHITECTURE FIGURE 2 VLAN EXAMPLE USED FOR STATIC AND GVRP EXAMPLES MSTP INTEROPERABILITY OF THE DELL POWERCONNECT 6200 SERIES SWITCHES WITH CISCO IOS AND CISCO CATOS BASED SWITCHES INTRODUCTION This paper describes how to configure the Dell PowerConnect M6220 Gigabit Ethernet switch to interoperate and connect with Cisco IOS and CatOS based switches when using industry standard Virtual Local Area Networks VLANs that adhere to the IEEE 802 1Q standard This paper discusses both static and dynamic VLANs The primary purpose of VLANs is to separate traffic on a network This separation is accomplished by adding a VLAN tag to each Ethernet frame and by using switches that can recognize these tags to keep the traffic with the same tags on the
2. Click Apply Changes 0 00 gt Switching gt VLAN gt VLAN Membership VLAN Membership Unit Bi Port 123 4 5 6 7 8 9 101112 13 14 15 16 17 18 19 20 21 22 23 24 XG1XG2XG3XG4 al ee ESSE EIS APRIL 2008 MSTP INTEROPERABILITY OF THE DELL POWERCONNECT 6200 SERIES SWITCHES WITH CISCO IOS AND CISCO CATOS BASED SWITCHES 10 Select VLAN 102 and assign port 2 to the VLAN as an untagged interface and port 20 as a tagged interface 11 Select VLAN 310 and assign ports 3 16 to the VLAN as untagged interfaces and port 20 as a tagged interface Switching gt VLAN gt VLAN Membership VLAN Membership Q Default v 17 18 19 20 21 22 23 24 XG1XG2XG3XG4 BEN APRIL 2008 MSTP INTEROPERABILITY OF THE DELL POWERCONNECT 6200 SERIES SWITCHES WITH CISCO IOS AND CISCO CATOS BASED SWITCHES 12 Click Apply Changes 13 Select VLAN 1 and click the Static field for port 20 until it is blank in order to remove interface 1 g20 from VLAN 1 14 To view the VLAN Port Table open the Switching gt VLAN gt Port Settings page and then click Show All Switching gt VLAN gt VLAN Port Table VLAN Port Table CONFIGURING A CISCO IOS ETHERNET SWITCH FOR STATIC VLANS The following example shows the Cisco IOS Ethernet switch command line interface CLI commands for configuring its ports as shown in Figure 2 3750 config vtp mode transparent 3750 config interface
3. 1 91 1 94 1 91 1 92 1 93 1 916 1 920 Ports g 11 15 ch 1 gl g2 g 3 10 16 8 Default Static Static Static other permanent permanent permanent Authorization Required Required Required Required Authorization Required Required Required Required APRIL 2008 MSTP INTEROPERABILITY OF THE DELL POWERCONNECT 6200 SERIES SWITCHES WITH CISCO IOS AND CISCO CATOS BASED SWITCHES The output of this command shows that VLAN 310 contains ports g3 g16 and port g20 In the example ports g3 16 were configured statically to be members of 310 Port g20 was learned via GVRP The configuration of the Cisco switches will not advertise the access port VLANs across port g20 unless the access port has link So the output of the above command implies that the Cisco switch does not have link on port 1 and 2 but does have link on port 3 CONFIRMING A SUCCESSFUL GVRP COMMUNICATION WITH CISCO CATOS The following example shows how the Cisco CatOS show trunk 2 16 command can be used to assure that the Cisco switch is learning VLANs via GVRP 6509 gt enable show trunk 2 16 indicates vtp domain mismatch indicates dotlq all tagged enabled on the port Port Mode Encapsulation Status Native vlan 2 16 on dotiq trunking 1 Port Vlans allowed on trunk 2 16 2 1005 1025 4094 Port Vlans allowed and active in management domain 2 16 101 102 310 Port Vlans in spanning tree forwarding state and no
4. Command set vtp mode transparent Description Sets the switch to ignore but forward the Cisco proprietary VTP VLAN Trunking Protocol VTP is used to perform similar functions as GVRP but it is not compatible with GVRP Configure port 2 1 to be an access port in set vlan 101 2 1 VLAN 101 Configure port 2 2 to be an access port in set vlan 102 2 2 VLAN 102 Configure port 2 3 to be an access port in set vlan 310 2 3 VLAN 310 Sets port 2 16 to use 802 1Q encapsulation for VLAN tagged traffic not the Cisco proprietary ISL encapsulation set gvrp dynamic vlan creation Configures the switch to dynamically create enable VLANS learned via GVRP Prevents VLAN 1 from being advertised via GVRP VLAN 1 is the default VLAN Any ports not configured to be in a specific VLAN will be put in VLAN 1 This shows how to prevent traffic from ports left in the default state from sending traffic across the trunk set trunk 2 16 on clear trunk 2 16 1 dotlq CONFIGURING A CISCO IOS ETHERNET SWITCH FOR DYNAMIC VLANS Very few IOS based switches support GVRP This section will be updated at a later time CONFIRMING A SUCCESSFUL GVRP COMMUNICATION WITH THE M6220 The following example shows how the PowerConnect M6220 show vlan command can be used to assure that the M6220 is learning VLAN information via GVRP M6220 show vlan VLAN Name 1 Default 101 102 310 VLAN Name 1 1 101 101 102 102 310 310 chl 18 1 93 1 920
5. 0 1 3750 config if switchport access vlan 101 3750 config if exit 3750 config interface GigabitEthernet 1 0 2 3750 config if switchport access vlan 102 3750 config if exit 3750 config interface GigabitEthernet 1 0 3 3750 config if switchport access vlan 310 3750 config if exit 3750 config interface range GigabitEthernet 1 0 11 12 3750 config if channel group 1 mode 3750 config if exit 3750 config interface Port channel 1 3750 config if switchport mode trunk 3750 config if switchport trunk allowed vlan 101 102 310 3750 config if switchport trunk encapsulation dotlq 3750 config if exit Only the bold lines were added or changed The interface range Gigabit Ethernet 1 0 11 12 command changes the CLI mode to configure ports 1 0 11 and 1 0 12 The channel group 1 mode on command puts ports 1 0 11 and 1 0 12 into a static LAG The interface Port channel 1 command changes the CLI mode to configure LAG 1 All the other lines are exactly the same as the static VLAN example The concept for CatOS is that all individual ports are configured for their VLAN settings and then the ports are put into a LAG If the example in Figure 2 were changed slightly where port 2 16 was a LAG of ports 2 11 and 2 12 instead of a single port the Cisco IOS static configuration would look like this starting from an empty configuration 6509 gt enable set vtp mode transparen
6. The following command example shows the equivalent Access and General mode configurations Access Mode M6220 config interface ethernet 1 91 M6220 config if 1 gl switchport mode access M6220 config if 1 gl switchport access vlan 101 M6220 config if 1 gl exit is equivalent to the following General mode settings M6220 config interface ethernet 1 91 M6220 config if switchport mode general M6220 config if switchport general allowed vlan add 101 untagged M6220 config if switchport general pvid 101 M6220 config if exit The following shows the equivalent Trunk and General mode configurations Trunk mode M6220 config interface ethernet 1 g20 M6220 config if 1 g20 switchport mode trunk M6220 config if 1 g20 switchport trunk allowed vlan add 101 102 310 M6220 config if 1 g20 switchport trunk native 1 M6220 config if 1 g20 exit APRIL 2008 MSTP INTEROPERABILITY OF THE DELL POWERCONNECT 6200 SERIES SWITCHES WITH CISCO IOS AND CISCO CATOS BASED SWITCHES is equivalent to the following General mode settings M6220 config interface ethernet 1 g20 M6220 config if 1 g20 switchport mode general M6220 config if 1 g20 switchport general allowed vlan add 101 102 310 tagged M6220 config if 1 g20 switchport general pvid 1 M6220 config if 1 g20 exit The examples discussed in this document use General mode VLANs and not Trunk Mode VLANs This is done deliberately s
7. VLAN 101 This means that the Ethernet traffic on this port will be untagged and all the traffic will be in VLAN 101 Puts the CLI back into the configuration exit CLI mode interface GigabitEthernet 1 0 2 Sets the CLI mode to configure gigabit Ethernet port 2 f Sets the port to an access VLAN port in h exit Puts the CLI back into the configuration CLI mode interface GigabitEthernet 1 0 3 Sets the CLI mode to configure gigabit Ethernet port 3 switchport access vlan 101 Sets the port to an access VLAN port in switchport access vlan 310 VLAN 310 Puts the CLI back into the configuration CLI mode Sets the CLI mode to configure gigabit interface GigabitEthernet 1 0 16 Ethernet port 16 referred to in the command as GigabitEthernet 1 0 16 APRIL 2008 MSTP INTEROPERABILITY OF THE DELL POWERCONNECT 6200 SERIES SWITCHES WITH CISCO IOS AND CISCO CATOS BASED SWITCHES Sets the port type to a VLAN trunk A VLAN t t k trunk port will allow multiple tagged VLANs switchport access vlan 102 Puts the CLI back into the configuration CLI mode switc 102 switc dotiq 310 hport trunk encapsulation Description hport trunk allowed vlan 101 Sets the port to allow only tagged traffic in VLANs 101 102 and 310 Sets the port to send and receive 802 1Q tagged traffic not the Cisco proprietary ISL tagged traffic Puts the CLI back into the configuration CLI mode CONF
8. VLAN trunk mode all untagged packets are dropped unless the Native VLAN is also included as one of the VLANs allowed on trunk In this example the Native VLAN is VLAN 1 but since VLAN 1 was not included in the trunk all untagged traffic entering this port is dropped CONFIGURING THE M6220 EXTERNAL PORTS FOR DYNAMIC VLANS USING GVRP NOTE The following example assumes starting from an empty configuration The following example shows the Dell PowerConnect M6220 Gigabit Ethernet switch command line interface CLI commands for configuring the Gigabit Ethernet switch with GVRP to match the example in Figure 2 M6220 config vlan database M6220 config vlan vlan 101 102 310 M6220 config exit M6220 config interface ethernet 1 91 M6220 config if 1 gl switchport access vlan 101 M6220 config if 1 gl gvrp enable M6220 config if 1 gl exit M6220 config interface ethernet 1 92 M6220 config if 1 g2 switchport access vlan 102 M6220 config if 1 g2 gvrp enable M6220 config if 1 g2 exit M6220 config interface range ethernet 1 g3 1 g16 M6220 config if switchport access vlan 310 M6220 config if gvrp enable M6220 config if exit M6220 config interface ethernet 1 g20 M6220 config if 1 g20 switchport mode general M6220 config if 1 g20 switchport general pvid 4095 M6220 config if 1 g20 switchport general allowed vlan remove 1 M6220 config
9. example will show how to perform the following tasks Put the server blade connected to port g1 in VLAN 101 Put the server blade connected to port g2 in VLAN 102 Put server blades connected to ports g3 through g16 in VLAN 310 e Trunk these VLANs to a Cisco IOS and a Cisco CatOS switch using static VLANs Port g20 is used as the trunk port in the examples but this is an arbitrary choice Any ports from g17 to g20 could be used for this example APRIL 2008 MSTP INTEROPERABILITY OF THE DELL POWERCONNECT 6200 SERIES SWITCHES WITH CISCO IOS AND CISCO CATOS BASED SWITCHES CONFIGURING THE M6220 EXTERNAL PORTS FOR STATIC VLANS The following example shows the Dell PowerConnect M6220 Gigabit Ethernet switch CLI commands for configuring the 16 internal ports and external port g20 as shown in Figure 2 M6220 gt enable M6220 configure M6220 config vlan database M6220 config vlan vlan 101 102 310 M6220 config vlan exit M6220 M6220 M6220 M6220 M6220 M6220 config interface ethernet 1 91 config if 1 gl switchport access vlan 101 config if 1 gl exit config interface ethernet 1 92 config if 1 g2 switchport access vlan 102 config if 1 g2 exit M6220 config interface range Ethernet 1 93 1 916 M6220 config if switchport access vlan 310 M6220 config if exit M6220 config interface ethernet 1 g20 M6220 config if 1 g20 switchport mode general M6220 config if 1 g20 switchport gene
10. tag and sends the traffic to the destination server blade switchport general allowed vlan remove 1 To configure the external ports for static VLANs by using the Web interface use the following steps APRIL 2008 MSTP INTEROPERABILITY OF THE DELL POWERCONNECT 6200 SERIES SWITCHES WITH CISCO IOS AND CISCO CATOS BASED SWITCHES 1 From the Switching gt VLAN gt VLAN Membership page click Add Switching gt VLAN gt VLAN Membership VLAN Membership 13 14 15 16 17 18 19 20 21 22 23 24 XG1XG2XG3XG4 ul ul ul uj ul ul ul ul ul ul os Ee Ex eite n is lie uj uj U U 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 2 From the Add VLAN page enter 101 in the VLAN ID field and click Apply Changes Add VLAN APRIL 2008 9 MSTP INTEROPERABILITY OF THE DELL POWERCONNECT 6200 SERIES SWITCHES WITH CISCO IOS AND CISCO CATOS BASED SWITCHES 3 Add VLANs 102 and 310 4 From Ports menu on the Switching gt VLAN gt Port Settings page select port g20 5 Configure port g20 in General mode with a PVID of 4095 and click Apply Changes Switching gt VLAN gt Port Settings Port Settings 6 From the Show VLAN menu on the Switching gt VLAN gt VLAN Membership page select 101 Click the Static box for port 1 so that the letter U untagged appears in the box Click the Static box for port 20 so that the letter T tagged appears in the box
11. 04show interfaces switchport ethernet 1 g20 Port 1 g20 VLAN Membership mode General Mode Operating parameters PVID 4095 Ingress Filtering Enabled Acceptable Frame Type Admit A11 Default Priority 0 GVRP status Disabled Protected Disabled Port 1 g20 is member in VLAN Name Egress rule Type 101 Tagged Static 102 Tagged Static 310 Tagged Static Static configuration PVID 4095 Ingress Filtering Enabled Acceptable Frame Type Admit A11 Port 1 g20 is statically configured to VLAN Name Egress rule 101 Tagged 102 Tagged 310 Tagged Forbidden VLANS VLAN Name The output of this command shows that port g20 VLAN Membership mode is General and that the Port is member in VLANs 101 102 and 310 Also notice that the Ingress UnTagged VLAN PVID VLAN is 4095 VLAN 4095 is the discard VLAN and this setting means that untagged packets entering this port are dropped CONFIRMING A SUCCESSFUL STATIC VLAN CONFIGURATION WITH CISCO IOS The following Cisco IOS commands can be used to confirm the VLAN configuration 37504 show interfaces gigabitEthernet 1 0 1 switchport Name Gil 0 1 Switchport Enabled Administrative Mode dynamic auto Operational Mode static access Administrative Trunking Encapsulation negotiate Operational Trunking Encapsulation native Negotiation of Trunking On Access Mode VLAN 101 VLANO101 APRIL 2008 MSTP INTEROPERABILITY OF THE DELL POWERCONNECT 6200 SERIES
12. GigabitEthernet 1 0 1 3750 config if switchport access vlan 101 3750 config if exit 3750 config interface GigabitEthernet 1 0 2 3750 config if switchport access vlan 102 3750 config if exit APRIL 2008 MSTP INTEROPERABILITY OF THE DELL POWERCONNECT 6200 SERIES SWITCHES WITH CISCO IOS AND CISCO CATOS BASED SWITCHES 3750 config interface GigabitEthernet 1 0 3 3750 config if switchport access vlan 310 3750 config if exit 3750 config interface GigabitEthernet 1 0 16 3750 config if switchport mode trunk 3750 config if switchport trunk allowed vlan 101 102 310 3750 config if switchport trunk encapsulation dotlq 3750 config if exit The following table describes the commands used in the example Command Description Sets the switch for static VLAN configuration This command disables the VTP protocol NOTE Cisco switches have the Cisco proprietary VTP VLAN trunking protocol enabled by default VTP performs the same function as the IEEE standard protocol GVRP The PowerConnect M6220 does not support the Cisco proprietary VTP and can only work with ports using IEEE 802 1Q standard GVRP protocol Some Cisco switches also support GVRP GVPP is discussed later in this document vtp mode transparent Sets the CLI mode to configure gigabit interface GigabitEthernet 1 0 1 Ethernet port 1 referred to in the command as GigabitEthernet 1 0 1 Sets the port to an access VLAN port in
13. Gs Please see the white paper Link Aggregation Interoperability of the Dell PowerConnect M6220 with Cisco IOS or Cisco CatOS based Switches for a in depth discussion of M6220 LAG interoperability with Cisco switches APRIL 2008 MSTP INTEROPERABILITY OF THE DELL POWERCONNECT 6200 SERIES SWITCHES WITH CISCO IOS AND CISCO CATOS BASED SWITCHES When configuring a LAG to be in a VLAN the concept for the PowerConnect M6220 is that ports are put into a LAG and then the LAG is configured with the desired VLAN settings not the individual ports If the example in Figure 2 were changed slightly where port g20 was a LAG of ports g17 and g18 instead of a single port the M6220 static configuration would look like this starting from an empty configuration M6220 config vlan database M6220 config vlan vlan 101 102 310 M6220 config vlan exit M6220 config interface ethernet 1 91 M6220 config if 1 gl switchport access vlan 101 M6220 config if 1 gl exit M6220 config interface ethernet 1 92 M6220 config if 1 g2 switchport access vlan 102 M6220 config if 1 g2 exit M6220 config interface range ethernet 1 g3 1 g10 M6220 config if switchport access vlan 310 M6220 config if exit M6220 config interface range ethernet 1 g17 1 g18 M6220 config if channel group 1 mode on M6220 config if exit M6220 config interface port channel 1 M6220 config if chl switchport mode g
14. IGURING A CISCO CATOS ETHERNET SWITCH FOR STATIC VLANS The following example shows the Cisco CatOS Ethernet switch command line interface CLI commands for configuring its ports as shown in Figure 2 6509 gt 6509 gt 6509 gt 6509 gt 6509 gt 6509 gt enable enable enable enable enable enable set vtp mode transparent set vlan 101 2 1 set vlan 102 2 2 set vlan 310 2 3 clear trunk 2 16 1 1005 1025 4094 set trunk 2 16 on dotlq 101 102 310 The following table describes the commands used in the previous example Command vtp mode transparent set vlan 101 2 1 Configures port 2 2 to be an access port in set vlan 102 2 2 VLAN 102 Configures port 2 3 to be an access port in set vlan 310 2 3 VLAN 310 Description Sets the switch for static VLAN configuration By default Cisco switches have the Cisco proprietary VTP VLAN trunking protocol enabled by default This command disables the VTP protocol Sets the port to an access VLAN port in VLAN 101 This means that the Ethernet traffic on this port will be untagged and all the traffic will be in VLAN 101 APRIL 2008 MSTP INTEROPERABILITY OF THE DELL POWERCONNECT 6200 SERIES SWITCHES WITH CISCO IOS AND CISCO CATOS BASED SWITCHES clear trunk 2 16 1 1005 1025 4094 set trunk 2 16 on dotlq 101 102 310 Description Disables port 2 16 from carrying all VLANs The default VLAN settings of Cisco CatOS are
15. SWITCHES WITH CISCO IOS AND CISCO CATOS BASED SWITCHES The output of this command shows that port 1 0 1 Name Gi1 0 1 is in Operations Mode static access and that is in Access mode VLAN 101 VLANO101 The following is the output of this command for port 1 0 16 the port with VLANs 101 102 310 3750 show interfaces gigabitEthernet 1 0 16 switchport Name Gil 0 16 Switchport Enabled Administrative Mode trunk Operational Mode trunk Administrative Trunking Encapsulation dotlq Operational Trunking Encapsulation dotlq Negotiation of Trunking On Access Mode VLAN 1 default Trunking Native Mode VLAN 1 default Voice VLAN none Administrative private vlan host association none Administrative private vlan mapping none Administrative private vlan trunk native VLAN none Administrative private vlan trunk encapsulation dotlq Administrative private vlan trunk normal VLANs none Administrative private vlan trunk private VLANs none Operational private vlan none Trunking VLANs Enabled 101 102 310 The output of this command shows that port 1 0 16 Name Gi1 0 16 is in Operational Mode trunk and that the Trunking VLANS Enabled are 101 102 and 310 In Cisco IOS when a port is in VLAN trunk mode all untagged packets are dropped unless the Trunking Native Mode VLAN is also included as one of the Trunking VLANs In this example the Trunking Native Mode VLAN is VLAN 1 but since VLAN 1
16. VLAN INTEROPERABILITY OF THE DELL POWERCONNECT M6220 WITH CISCO IOS OR CISCO CATOS BASED SWITCHES By Bruce Holmes THIS WHITE PAPER IS FOR INFORMATIONAL PURPOSES ONLY AND MAY CONTAIN TYPOGRAPHICAL ERRORS AND TECHNICAL INACCURACIES THE CONTENT IS PROVIDED AS IS WITHOUT EXPRESS OR IMPLIED WARRANTIES OF ANY KIND Dell and PowerConnect are trademarks of Dell Inc Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products Dell disclaims proprietary interest in the marks and names of others Copyright 2008 Dell Inc All rights reserved Reproduction in any manner whatsoever without the express written permission of Dell Inc is strictly forbidden For more information contact Dell Information in this document is subject to change without notice CONTENTS INTRODUCTION 3 NETWORK ARCHITECTURE OF THE DELL MODULAR SERVER ENCLOSURE CLEARING THE CONFIGURATION FOR THE DELL POWERCONNECT M6220 AND CISCO SWITCHES CONFIGURING THE M6220 PORTS FOR STATIC VLANS 6 CONFIGURING THE M6220 EXTERNAL PORTS FOR STATIC VLANS 7 CONFIGURING A CISCO IOS ETHERNET SWITCH FOR STATIC VLANS 12 CONFIGURING A CISCO CATOS ETHERNET SWITCH FOR STATIC VLANS 14 CONFIRMING A SUCCESSFUL STATIC VLAN CONFIGURATION js ON THE POWERCONNECT M6220 CONFIRMING A SUCCESSFUL STATIC VLAN CONFIGURATION ae WITH CISCO 10S
17. ation v Startup Configuration To set a Cisco IOS based switch to default configuration use the following commands NOTE This will erase any configuration data previously configured and reboot the switch 3750 delete flash config text 3750 reload To set a Cisco CatOS based switch e g Catalyst 6509 to default configuration use the following commands NOTE This will erase any configuration data previously configured and reboot the switch Cat_6509 enable clear config all Please see other sections of this paper for cases when it is impractical to reset the switches to factory defaults The Dell PowerConnect M6220 can support up to 1024 different VLANs VLAN ID can be any value between 2 4093 The default VLAN ID is 1 A VLAN tag can have a value from 2 to 4093 APRIL 2008 MSTP INTEROPERABILITY OF THE DELL POWERCONNECT 6200 SERIES SWITCHES WITH CISCO IOS AND CISCO CATOS BASED SWITCHES Cisco Switch Port 1 VLAN 101 Port 2 VLAN 102 Port 3 VLAN 310 Port 16 VLANS 101 102 310 g20 PowerConnect M6220 LOL NV1A LB ZOL NV1A Z5 OLE NV1A C OLE NV1A v5 OLE NV1A sS5 OLE NV1A 96 OLE NV1A 45 OLE Nv1A 95 OLE NV1A 65 OLE NV1 A 916 Figure 2 VLAN Example Used for Static and GVRP Examples CONFIGURING THE M6220 PORTS FOR STATIC VLANS The network scenario in Figure 2 will be used to show how to configure static VLANs Figure 2 will also be used for the GVRP examples later in this paper This
18. eneral M6220 config if chl switchport general allowed vlan add 101 102 310 tagged switchport general allowed vlan remove 1 switchport general pvid 4095 M6220 config if chl M6220 config if chl M6220 config if chl exit Only the bold lines were added or changed The interface range ethernet 1 g17 1 g18 command changes the CLI mode to configure ports g17 and g18 The channel group 1 mode on command puts ports 017 and 018 into a static LAG The interface port channel 1 command changes the CLI mode to configure LAG 1 All the other lines are exactly the same as the static VLAN example To assign ports 1 g17 and 1 g18 to LAG 1 by using the Web interface navigate to the Switching Link Aggregation LAG Membership page In the Ports area click the button under port 1 g17 and 1 g18 in the LAG row The number 1 appears to indicate that the port belongs to LAG 1 Switching gt Link Aggregation gt LAG Membership LAG Membership 5 E T 8 R 13 14 15 16 17 18 19 20 21 22 23 24 m pm m pm m m m m m m m m m m m mum m m 29 30 31 32 33 34 36 Jm pm pm pm pm pm m m uem m mmm em um em m m mmm LJ APRIL 2008 MSTP INTEROPERABILITY OF THE DELL POWERCONNECT 6200 SERIES SWITCHES WITH CISCO IOS AND CISCO CATOS BASED SWITCHES To configure the VLAN membership information for LAG 1 use the following steps 1 Navigate
19. if 1 g20 gvrp enable M6220 config if 1 g20 exit M6220 config gvrp enable The only addition is the gvrp enable command for each port For the access ports g1 g2 g3 10 the gvrp enable command configures each port to be advertised by GVRP on any ports that have GVRP enabled Conversely VLANs that are only on access ports that do not have GVRP enabled will not be advertised on ports that have GVRP enabled For port g20 the gvrp enable command configures the port to advertise the VLANs from the ports that have GVRP enabled 101 102 310 and learn new VLANs on the port via GVRP APRIL 2008 MSTP INTEROPERABILITY OF THE DELL POWERCONNECT 6200 SERIES SWITCHES WITH CISCO IOS AND CISCO CATOS BASED SWITCHES The last GVRP enable command enables GVRP globally To perform the same configuration by using the Web interface navigate to the Switching gt VLAN gt GVRP Parameters page To enable GVRP on the switch Select Enable from the GVRP Global Status menu and click Apply Changes Switching gt VLAN gt GVRP Parameters GVRP Parameters To enable GVRP on the ports use the following steps 1 2 3 From the GVRP Parameters page click Show All Select the Edit option for port 1 g1 and then select Enable from the GVRP State menu Above the port table select the Copy Parameters From option and make sure port 1 g1 is selected in the Port field Select the Copy To option in the fields for po
20. l Modular Server Enclosure is shown in Figure 1 Each server blade has two LAN on Motherboard LOM Ethernet controllers integrated into its motherboard Each server blade s LOM is connected through the chassis midplane to the chassis I O bays in the rear Each Ethernet switch has sixteen internal ports one to each server blade numbered g1 g16 and four external 1G ports numbered g17 g20 and four optional 10G ports numbered xg1 xg4 CLEARING THE CONFIGURATION FOR THE DELL POWERCONNECT M6220 AND CISCO SWITCHES The examples in this document show the minimum configurations necessary to configure VLANs between a Cisco IOS Gigabit Ethernet switch Catalyst 3750 Cisco CatOS Ethernet switch Catalyst 6509 and the Dell PowerConnect M6220 The commands in this example work without issue when starting from a default configuration of the switches To set the Dell PowerConnect M6220 to default configuration and reboot use the following commands NOTE This will erase any configuration data previously configured and reboot the switch M6220 clear config M6220 reload APRIL 2008 MSTP INTEROPERABILITY OF THE DELL POWERCONNECT 6200 SERIES SWITCHES WITH CISCO IOS AND CISCO CATOS BASED SWITCHES From the Web interface click the Restore Configuration Factory Default option on the System gt File Management gt Copy Files page and then click Apply Changes System gt File Management gt Copy Files Copy Files Running Configur
21. lete network connectivity This is a well understood behavior of a single Spanning Tree Protocol instance Please see the white paper MSTP Interoperability of the Dell PowerConnect M6220 with Cisco IOS or Cisco CatOS based Switches for an in depth discussion of M6220 Multiple Spanning Tree MSTP interoperability with Cisco switches COMPARING ACCESS TRUNK AND GENERAL MODES ON THE M6220 The PowerConnect M6220 supports three different VLAN modes The modes and their definition are as follows Access mode VLAN By default sets egress to untagged e Supports single VLAN configuration only e X Automatically sets PVID native VLAN ingress untagged to configured VLAN Will accept untagged packets or tagged packets with VLAN ID to which the port is a member in this case the port is a member of only one VLAN Trunk mode VLAN By default sets egress to tagged e Supports multiple VLANs Does set PVID native VLAN ingress untagged Native VLAN cannot be a configured Trunk VLAN or 4095 discard VLAN e General mode VLAN By default sets egress to tagged Supports multiple VLANs Does not set PVID native VLAN ingress untagged Native VLAN can be any defined VLAN Setting the PVID removes default vlan VID 1 for that port PVID can be 4095 discard VLAN Allows mix of tagged and untagged VLANs in the egress direction Access and Trunk modes are short hand for configurations that can be accomplished in General mode
22. necessary network segments Using VLANs conserves network bandwidth by limiting broadcast traffic to a specified VLAN and provides a more secure network by limiting traffic across multiple VLANs The IEEE 802 1Q standard based VLAN implementation on the PowerConnect M6220 is interoperable with Cisco VLANs using both static and dynamic configuration dynamic via GVRP Dell is a member of the University of New Hampshire Interoperability Lab UNH IOL where all PowerConnect products are tested to confirm interoperability with other Consortium members network devices Included in the UNH IOL tests is VLAN interoperability with other Consortium members Additional information regarding UNH s VLAN testing can be found at ftp ftp iol unh edu pub bfc testsuites vlan io test suite pdf VLANs can be configured as either dynamic or static Dynamic configuration is supported using the IEEE 802 1Q standard which is known as GARP VLAN Registration Protocol GVRP Static configuration is used when connecting the Dell PowerConnect M6220 Gigabit Ethernet Switch to an external Gigabit Ethernet switch or a NIC that does not support GVRP One advantage of GVRP is that the protocol enables the Gigabit Ethernet switches in the network to automatically add and remove ports from VLANs thus minimizing network administration The following examples use the switch s Command Line Interface CLI for configuration See the Dell PowerConnect M6220 CLI Reference G
23. o that the PVID could be set to 4095 discard VLAN to disallow untagged packets from entering port g20 Trunk mode ports to not allow the Native VLAN to be set to 4095 CONCLUSION The standards based VLAN feature on the Dell PowerConnect M6220 switch interoperates easily with Cisco IOS and CatOS based switches By understanding the differences in the Dell PowerConnect M6220 CLI and the Cisco CLIs and building on the examples shown in this article system administrators can integrate the M6220 into their Cisco based networks ABOUT THE AUTHOR Bruce Holmes is a senior project engineer in the Dell PowerConnect Group He has worked at Dell for two years and supports Dell PowerConnect switches in all phases of product development and testing Prior to Dell Bruce was an embedded networking software engineer at Wind River Systems Alcatel and Texas Instruments He has a B S in Electrical Engineering from The University of Texas at Austin APRIL 2008
24. ral allowed vlan add 101 102 310 tagged M6220 config if 1 g20 switchport general pvid 4095 M6220 config if 1 g20 switchport general allowed vlan remove 1 M6220 config if 1 g20 exit The following table describes the commands used in the previous example Description Set the CLI mode to enable privilege mode configure Sets the CLI mode to configuration mode Sets the CLI mode to define the static vlan 101 102 310 Defines the static VLANs that are used in this example Puts the CLI back into the configuration CLI mode Sets the CLI mode to configure gigabit ethernet port 1 referred to in the command as 1 g1 interface ethernet 1 91 NOTE Value 1 in 1 91 and 1 98 specifies the unit number this number depends on the Stack unit number and can be between 1 to 12 Sets the port to an access VLAN port in VLAN 101 This means that the Ethernet traffic on this port will be untagged and all the traffic will be in VLAN 101 switchport access vlan 101 pee Puts the CLI back into the configuration CLI mode Sets the CLI mode to configure gigabit interface ethernet 1 g2 ethernet port 2 referred to in the command as 1 g2 Sets the port to an access VLAN port in VLAN 102 switchport access vlan 102 APRIL 2008 MSTP INTEROPERABILITY OF THE DELL POWERCONNECT 6200 SERIES SWITCHES WITH CISCO IOS AND CISCO CATOS BASED SWITCHES Command Description Puts the CLI back into the config
25. rts 1 g2 1 g20 to copy the GVRP Enable setting from port 1 g1 to those ports APRIL 2008 MSTP INTEROPERABILITY OF THE DELL POWERCONNECT 6200 SERIES SWITCHES WITH CISCO IOS AND CISCO CATOS BASED SWITCHES Switching gt VLAN gt GVRP Port Parameters Table GVRP Port Parameters Table d qo osae OO nn Dane Io gago EER EE o EE U O O E NE EE oo uu O Diesbie ugs Dese T A Cd lt lt Euer Dest Diae uu LT Disable i s S S S S S E EE NEN s S S S lt S S S fs FS 5 Click Apply Changes CONFIGURING A CISCO CATOS BASED ETHERNET SWITCH FOR DYNAMIC VLANS The following example shows the Cisco CatOS Gigabit Ethernet switch command line interface CLI commands for configuring the Cisco switch with GVRP to match the example in Figure 2 6509 enable 6509 enable set vtp mode transparent set vlan 101 2 1 6509 enable set vlan 102 2 2 6509 enable set vlan 310 2 3 6509 enable set trunk 2 16 on dotiq 6509 enable set port gvrp 2 16 enable 6509 enable set gvrp dynamic vlan creation enable 6509 enable set gvrp enable 6509 enable clear trunk 2 16 1 APRIL 2008 MSTP INTEROPERABILITY OF THE DELL POWERCONNECT 6200 SERIES SWITCHES WITH CISCO IOS AND CISCO CATOS BASED SWITCHES
26. t 6509 gt enable set vlan 101 2 1 6509 gt enable set vlan 102 2 2 6509 gt enable set vlan 310 2 3 6509 enable clear trunk 2 11 2 12 1 1005 1025 4094 6509 enable set trunk 2 11 on dotiq 101 102 310 6509 enable set trunk 2 12 on dotiq 101 102 310 6509 enable set port channel 2 11 2 12 mode on Only the bold lines were added or changed The clear trunk 2 11 2 12 1 1005 1025 4094 command disables all undesired VLANS from being allowed on the two ports 2 11 2 12 being put into the LAG The set trunk 2 11 on dotiq 101 102 310 and set trunk 2 11 on dotlq 101 102 310 commands put the two ports 2 11 2 12 being put into the LAG into VLANs 101 102 and 310 The set port channel 2 11 2 12 mode on command puts ports 2 11 and 2 12 into a static LAG All the other lines are exactly the same as the static VLAN example APRIL 2008 MSTP INTEROPERABILITY OF THE DELL POWERCONNECT 6200 SERIES SWITCHES WITH CISCO IOS AND CISCO CATOS BASED SWITCHES VLANS AND SPANNING TREE ON THE M6220 The PowerConnect M6220 implements a Multiple Spanning Tree Protocol instance per switch By default the Spanning Tree Protocol is enabled in RSTP mode and a single instance of STP CIST will be active In this case default configuration the user should be aware that even if the network is segmented into multiple VLANs with loops in any particular VLAN if a physical loop exists in the network some ports may be disabled preventing comp
27. t pruned 2 16 310 The output of this command shows that the trunk port 2 16 has learned VLAN 310 In the example port 2 3 was configured statically to be a member of VLAN 310 Port 2 16 was added to VLAN 310 via GVRP The configuration for the PowerConnect M6220 in the example will not advertise VLAN 310 unless one of the access ports g 3 10 has link So the output of the command implies that the PowerConnect switch does not have link on port g1 and g2 but does have link on at least one of the ports g 3 10 CONFIRMING A SUCCESSFUL GVRP VLAN CONNECTION WITH CISCO IOS Very few IOS based switches support GVRP This section will be updated at a later time CONFIGURATION LIMITATIONS None VLANS AND LINK AGGREGATION GROUPS On the PowerConnect M6220 when members are added to a link aggregation group LAG they are removed from all existing VLAN memberships When members are removed from a LAG they are added back to the VLANs that they were previously members of as per the configuration file NOTE A port s VLAN membership can still be configured when it is a member of a LAG however this configuration is only actually applied when the port leaves the LAG Additionally the port s GVRP configuration is overridden by the LAG s GVRP configuration Upon leaving the LAG the port will restore its GVRP configuration The LAG interface can be a member of a VLAN complying with IEEE 802 1Q The following discussion assumes an understanding of LA
28. to allow all VLANs on trunked ports This is a security concern It is good network configuration practice to remove a port from all VLANs before adding it to the desired VLANs Sets port 2 16 port type to a VLAN trunk noted by trunk sets the port to send and receive 802 1Q tagged traffic noted by on and sets the port to allow only traffic in VLANs 101 102 and 310 A VLAN trunk port will only allow tagged packets CONFIRMING A SUCCESSFUL STATIC VLAN CONFIGURATION ON THE POWERCONNECT M6220 The following M6220 command can be used to confirm the VLAN configuration M6220 show interfaces switchport ethernet 1 91 Port 1 gl VLAN Membership mode Access Mode Operating parameters PVID 101 Ingress Filtering Enabled Acceptable Frame Type Untagged Default Priority 0 GVRP status Enabled Protected Disabled Port 1 gl is member in Static configuration PVID 101 101 Untagged Static Ingress Filtering Enabled Acceptable Frame Type Untagged Port 1 91 is statically configured to 101 Untagged Forbidden VLANS VLAN Name APRIL 2008 MSTP INTEROPERABILITY OF THE DELL POWERCONNECT 6200 SERIES SWITCHES WITH CISCO IOS AND CISCO CATOS BASED SWITCHES The output of this command shows that port g1 VLAN Membership Mode is Access and that the Port is member in VLAN 101 The following is the output of this command for port g20 the port with VLANs 101 102 310 M622
29. to the Switching gt VLAN gt LAG Settings page 2 Set the Port VLAN Mode to General 3 Enter 4095 in the PVID field 4 Click Apply Changes Switching VLAN LAG Settings LAG Settings chi 5 Navigate to the Switching VLAN VLAN Membership page 6 From the Show VLAN menu select 1 7 Remove LAG 1 from the VLAN 1 membership and apply the changes Switching gt VLAN gt VLAN Membership VLAN Membership Of Disable Unit w Port 123 4 5 6 7 8 9 101112 13 14 15 16 17 18 19 20 21 22 23 24 XG1XG2XG3XG4 Static uju u u u u u u u ul ul ulu u u u ul uj uly 25 35 36 41 42 43 44 45 46 47 Static U uju Current U Ul U Ul Ul Ulu 48 U 01512 APRIL 2008 MSTP INTEROPERABILITY OF THE DELL POWERCONNECT 6200 SERIES SWITCHES WITH CISCO IOS AND CISCO CATOS BASED SWITCHES 8 Select the other VLANs and add LAG 1 as a tagged member The concept for Cisco IOS is the same as for the M6220 Ports are put into a LAG and then the LAG is configured with the desired VLAN settings If the example in Figure 2 were changed slightly where port 1 0 16 was a LAG of ports 1 0 11 and 1 0 12 instead of a single port the Cisco IOS static configuration would look like this starting from an empty configuration 3750 config mode transparent 3750 config interface GigabitEthernet 1
30. uide for more detailed information about the commands The VLAN Commands chapter contains information about configuring VLANs by using the CLI If desired any of the example configurations can be performed on the Dell PowerConnect M6220 by using the Web Based Interface WBI as well See the Dell PowerConnect M6220 User s Guide for a description of the Dell WBI For information about configuring VLANs by using the WBI see the Configuring VLANs section in the Configuring Switching Information chapter The Dell PowerConnect M6220 CLI Reference Guide and the Dell PowerConnect M6220 User s Guide are located on the Dell support website http support dell com support edocs network PCM6220 en index htm APRIL 2008 MSTP INTEROPERABILITY OF THE DELL POWERCONNECT 6200 SERIES SWITCHES WITH CISCO IOS AND CISCO CATOS BASED SWITCHES E Server gl Swith lt gt External Copper Blade lt g17 to g20 p lt gt S 2 lt gt HiGig ports gl6 i lt gt xgl to xg4 v e X ER 2 1 a lt gt 5 lt gt External Copper E Switch lt gt g17 to g20 server Blade 6 5 2 Blade 16 lt gt 216 lt gt HiGig ports lt xgl to xg4 Internal Port Connections 4 Figure 1 Dell PowerConnect M6220 Networking Architecture NETWORK ARCHITECTURE OF THE DELL MODULAR SERVER ENCLOSURE The internal network architecture of the Del
31. uration CLI mode Sets the CLI mode to configure gigabit interface range ethernet 1 93 1 916 Ethernet ports through 16 referred to in the command as 1 g3 1 g16 Sets ports 1 g3 through 1 g16 to access Puts the CLI back into the configuration CLI mode Sets the CLI mode to configure gigabit interface ethernet 1 g20 Ethernet port 20 referred to in the command as 1 g20 Sets the port type to an 802 1Q VLAN switchport mode general An 802 1Q VLAN port will allow multiple tagged VLANs Sets the port to allow only tagged traffic in VLANs 101 102 and 310 Traffic with tags other than 101 102 or 310 will be dropped switchport general allowed vlan add 101 102 310 tagged Sets the port to put any untagged packets entering the port into VLAN 4095 4095 is switchport general pvid 4095 the discard VLAN Setting the PVID to 4095 means that untagged packets are not allowed on this port Used to remove the port membership from VLAN 1 By default all the ports on the switch are members of VLAN 1 Puts the CLI back into the configuration exit CLI mode NOTE In this example traffic from the server blades is untagged and put in a specific VLAN at the switch The combined traffic from the server blades is then put on the single external trunked port as tagged traffic The VLAN tags keep the traffic logically separated When tagged traffic enters the external trunked port the switch examines the tag removes the
32. was not included in the trunk via the switchport trunk allowed vlan command all untagged traffic entering this port is dropped CONFIRMING A SUCCESSFUL STATIC VLAN CONFIGURATION WITH CISCO CATOS The following CatOS commands can be used to confirm the VLAN configuration 6509 gt enable show vlan VLAN Name Status IfIndex Mod Ports Vlans 1 default active 6 1 2 2 4 15 2 17 48 3 1 8 4 1 48 101 VLANO101 active 116 2 1 102 VLANO102 active 117 2 2 310 VLANO310 active 121 2 3 1002 fddi default active 7 1003 token ring default active 10 1004 fddinet default active 8 1005 trnet default active 9 The output of this command shows that VLAN 101 has port 2 1 as a member port VLAN 102 has port 2 2 as a member port and VLAN 310 has port 2 3 as a member port APRIL 2008 MSTP INTEROPERABILITY OF THE DELL POWERCONNECT 6200 SERIES SWITCHES WITH CISCO IOS AND CISCO CATOS BASED SWITCHES The following command can be used for port 2 16 the port with VLANs 101 102 310 6509 gt enable show trunk indicates vtp domain mismatch indicates dotlq all tagged enabled on the port Port Mode Encapsulation Status Native vlan 2 16 on dotiq trunking 1 Port Vlans allowed on trunk 2 16 101 102 310 The output of this command shows that port 2 16 has an Encapsulation of dotiq the Status is trunking and that the VLANs allowed on the trunk are 101 102 and 310 In Cisco CatOS when a port is in

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