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.
CONTENTS INTRODUCTION 3 NETWORK ARCHITECTURE OF THE DELL MODULAR SERVER ENCLOSURE 4 CLEARING THE CONFIGURATION FOR THE DELL POWERCONNECT M6220 AND CISCO SWITCHES 4 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 ON THE POWERCONNECT M6220 15 CONFIRMING A SUCCESSFUL STA
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.
MSTP INTEROPERABILITY OF THE DELL™ POWERCONNECT™ 6200 SERIES SWITCHES WITH CISCO IOS AND CISCO CATOS-BASED SWITCHES Server Blade 1 g1 Switch g16 Blade 1 Mid Plane g1 Switch Blade 6 Server Blade 16 g16 External Copper g17 to g20 HiGig ports xg1 to xg4 External Copper g17 to g20 HiGig ports xg1 to xg4 Internal Port Connections Figure 1: Dell PowerConnect M6220 Networking Architecture NETWORK ARCHITECTURE OF THE DELL MODULAR SERVER ENCLOSURE The internal network architecture of the Dell Modular S
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 > File Management > Copy Files page, and then click Apply Changes. 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.
MSTP INTEROPERABILITY OF THE DELL™ POWERCONNECT™ 6200 SERIES SWITCHES WITH CISCO IOS AND CISCO CATOS-BASED SWITCHES 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).
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.
MSTP INTEROPERABILITY OF THE DELL™ POWERCONNECT™ 6200 SERIES SWITCHES WITH CISCO IOS AND CISCO CATOS-BASED SWITCHES Command Description exit Puts the CLI back into the configuration CLI mode interface range ethernet 1/g3-1/g16 switchport access vlan 310 Sets the CLI mode to configure gigabit Ethernet ports 3 through 16 (referred to in the command as ‘1/g3-1/g16’) Sets ports 1/g3 through 1/g16 to access ports in VLAN 310 exit Puts the CLI back into the configuration CLI mode interface ethernet 1/g20
MSTP INTEROPERABILITY OF THE DELL™ POWERCONNECT™ 6200 SERIES SWITCHES WITH CISCO IOS AND CISCO CATOS-BASED SWITCHES 1. 2. APRIL 2008 From the Switching > VLAN > VLAN Membership page, click Add. From the Add VLAN page, enter 101 in the VLAN ID field and click Apply Changes.
MSTP INTEROPERABILITY OF THE DELL™ POWERCONNECT™ 6200 SERIES SWITCHES WITH CISCO IOS AND CISCO CATOS-BASED SWITCHES 3. 4. 5. Add VLANs 102 and 310. From Ports menu on the Switching > VLAN > Port Settings page, select port g20. Configure port g20 in General mode with a PVID of 4095 and click Apply Changes. 6. From the Show VLAN menu on the Switching > VLAN > VLAN Membership page, select 101. Click the Static box for port 1 so that the letter U (untagged) appears in the box.
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.
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 > VLAN > Port Settings page, and then click Show All.
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 dot1q 3750(config-if)# exit The following table describes the commands used in the example
MSTP INTEROPERABILITY OF THE DELL™ POWERCONNECT™ 6200 SERIES SWITCHES WITH CISCO IOS AND CISCO CATOS-BASED SWITCHES Command Description switchport mode trunk Sets the port type to a VLAN trunk.
MSTP INTEROPERABILITY OF THE DELL™ POWERCONNECT™ 6200 SERIES SWITCHES WITH CISCO IOS AND CISCO CATOS-BASED SWITCHES Command Description clear trunk 2/16 1-1005, 1025-4094 Disables port 2/16 from carrying all VLANs. The default VLAN settings of Cisco CatOS are 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.
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.
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 1/0/1 (Name: Gi1/0/1) is in ‘Operations Mode: static access’ and that is in ‘Access mode VLAN: 101 (VLAN0101)’.
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> (enable) show trunk * - indicates vtp domain mismatch # - indicates dot1q-all-tagged enabled on the port Port Mode Encapsulation Status -------------------------------2/16 on dot1q trunking Port ----2/16 Native vlan ----------1 Vlans allowed on trunk ---------------------101-102,310 . . .
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 > VLAN > GVRP Parameters page. To enable GVRP on the switch Select Enable from the GVRP Global Status menu and click Apply Changes. To enable GVRP on the ports, use the following steps: 1. 2. 3. 4.
MSTP INTEROPERABILITY OF THE DELL™ POWERCONNECT™ 6200 SERIES SWITCHES WITH CISCO IOS AND CISCO CATOS-BASED SWITCHES 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.
MSTP INTEROPERABILITY OF THE DELL™ POWERCONNECT™ 6200 SERIES SWITCHES WITH CISCO IOS AND CISCO CATOS-BASED SWITCHES Command Description set vtp mode transparent Sets the switch to ignore, but forward the Cisco proprietary VTP (VLAN Trunking Protocol).
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.
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).
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: APRIL 2008 1. 2. 3. 4. Navigate to the Switching > VLAN > LAG Settings page. Set the Port VLAN Mode to General. Enter 4095 in the PVID field. Click Apply Changes. 5. 6. 7. Navigate to the Switching > VLAN > VLAN Membership page. From the Show VLAN menu, select 1.
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.
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.
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.
