LINK AGGREGATION INTEROPERABILITY ™ OF THE DELL ™ POWERCONNECT 6200 SERIES WITH CISCO IOS OR CISCO CATOS BASED SWITCHES By Bruce Holmes
CONTENTS INTRODUCTION 3 LINK AGGREGATION WITH GIGABIT ETHERNET CISCO SWITCHES 4 CONFIGURING THE 6200 SERIES SWITCH PORTS FOR DYNAMIC LINK AGGREGATION 5 CONFIGURING A CISCO IOS GIGABIT ETHERNET SWITCH FOR DYNAMIC LINK AGGREGATION 6 CONFIGURING A CISCO CATOS GIGABIT ETHERNET SWITCH FOR DYNAMIC LINK AGGREGATION 7 CONFIRMING A SUCCESSFUL DYNAMIC LINK AGGREGATION CONNECTION WITH THE 6200 SERIES SWITCH 7 CONFIRMING A SUCCESSFUL DYNAMIC LINK AGGREGATION CONNECTION WITH CISCO IOS 8 CONFIRMING A SUCCE
LINK AGGREGATION INTEROPERABILITY OF THE DELL POWERCONNECT 6200 SERIES SWITCH INTRODUCTION This paper describes how to configure the Dell™ PowerConnect™ 6200 Series Gigabit Ethernet switch to interoperate and connect with Cisco IOS based switches when using industry standard link aggregation groups (LAGs) that adhere to the IEE 802.3ad standard. This paper discusses both static and dynamic LAGs. The PowerConnect 6200 Series switches include the PC6224, PC6248, PC6224P, PC6248P, PC6224F, and M6220.
LINK AGGREGATION INTEROPERABILITY OF THE DELL POWERCONNECT 6200 SERIES SWITCH The Dell PowerConnect 6200 Series CLI Reference Guide and the Dell PowerConnect 6200 Series User's Guide are located on the Dell support website: http://support.dell.com/support/edocs/network/pc62xx/en/index.
LINK AGGREGATION INTEROPERABILITY OF THE DELL POWERCONNECT 6200 SERIES SWITCH To set a Cisco IOS based switch to the 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.
LINK AGGREGATION INTEROPERABILITY OF THE DELL POWERCONNECT 6200 SERIES SWITCH To assign ports 1/g17 through 1/g20 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 ports 1/g17 through 1/g20 in the LAG row. The number 1 appears to indicate that the port belongs to LAG 1. Click a button under port 1/g17 (or any other LAG members) in the LACP row to use LACP on the port-channel.
LINK AGGREGATION INTEROPERABILITY OF THE DELL POWERCONNECT 6200 SERIES SWITCH CONFIGURING A CISCO CATOS GIGABIT ETHERNET SWITCH FOR DYNAMIC LINK AGGREGATION The following example shows the Cisco CatOS switch CLI commands for configuring six ports for LACP.
LINK AGGREGATION INTEROPERABILITY OF THE DELL POWERCONNECT 6200 SERIES SWITCH CONFIRMING A SUCCESSFUL DYNAMIC LINK AGGREGATION CONNECTION WITH CISCO IOS The following example shows how the Cisco IOS show interfaces port-channel 1 etherchannel command can be used to assure that the Cisco has established a LAG and that the LAG is connected.
LINK AGGREGATION INTEROPERABILITY OF THE DELL POWERCONNECT 6200 SERIES SWITCH CONFIGURING THE 6200 SERIES PORTS FOR STATIC LINK AGGREGATION The following example shows the PowerConnect 6200 Series Gigabit Ethernet switch CLI commands for configuring three ports of the Gigabit Ethernet switch for static aggregation.
LINK AGGREGATION INTEROPERABILITY OF THE DELL POWERCONNECT 6200 SERIES SWITCH CONFIGURING A CISCO IOS SWITCH FOR STATIC LINK AGGREGATION The following example shows the Cisco IOS CLI commands for configuring three ports of the Cisco switch for static link aggregation.
LINK AGGREGATION INTEROPERABILITY OF THE DELL POWERCONNECT 6200 SERIES SWITCH COMMAND DESCRIPTION set channelprotocol pagp 2 Sets module 2 to use the PaGP commands to configure LAGs. As mentioned previously, in defining a static LAG, the setting for the channelprotocol does not matter. set port channel 2/9-11 mode on Configures the three Ethernet ports (2/9, 2/10, and 2/11) into a static LAG. Static LAGs do not use PAgP and are defined in the Cisco CLI by setting the channel mode to on.
LINK AGGREGATION INTEROPERABILITY OF THE DELL POWERCONNECT 6200 SERIES SWITCH To set the ports on a Cisco IOS switch to auto-negotiation, use the following commands: 2950(config)# interface range FastEthernet 0/1 - 3 2950(config-if)# speed auto 2950(config-if)# duplex auto To set the ports on a Cisco CatOS switch to auto-negotiation, use the following command: Cat_6509> (enable) set port speed 2/9-11 auto If auto negotiation cannot be used, both the Dell PowerConnect LAG and the Cisco switch ports in the LA
LINK AGGREGATION INTEROPERABILITY OF THE DELL POWERCONNECT 6200 SERIES SWITCH CONFIGURATION LIMITATIONS Ports to be aggregated must be configured so that they are compatible with the link aggregation feature and with the partner switch to which they connect. For the Dell PowerConnect 6200 Series switch, the following limitations apply to aggregated ports. The commands to remove the configuration are shown below each limitation.
LINK AGGREGATION INTEROPERABILITY OF THE DELL POWERCONNECT 6200 SERIES SWITCH CISCO AND DELL LAG DISTRIBUTION CONFIGURATION Switches can only control the distribution of outgoing traffic on LAG ports. The PowerConnect 6200 Series switch supports six different distribution methods based on source and/or destination MAC or IP addresses, source and/or destination TCP/UDP ports, and source port/module ID to decide which port or LAG a packet will travel.
