Ethernet Trunk Setup on 4500 to support UCS

[richard.pugh]

Looking for documentation that details the configuration steps needed to configure Port Channels and Trunking on a Cisco Catalyst 4500 and other Catalyst models to support the UCS 6100 Ethernet Uplinks. I have found all kinds of documents on creating the port-channel on UCS but am unable to find what needs to be done on the Network side to support UCS.

[juwalthe]

The most important thing to know is that UCS Fabric Interconnects only support LACP etherchannels for upstream port aggregation. 

On the 4500 side, you'll want to do something like this:

Switch# configure terminal 

Switch(config)# interface range fastethernet 5/6 - 7 (Note: Space is mandatory.)

Switch(config-if-range)# channel-group 2 mode active 

Switch(config-if-range)# end 

Switch# end 

Let me know what questions you have about this.

--Justin

[David Rodriguez]

Just to add onto Justin's reply we also enter the following commands on the interface:

switchport nonegotiate

spanning-tree portfast trunk

spanning-tree guard loop

channel-protocol lacp