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Forum Discussion

Leam_53941's avatar
Leam_53941
Icon for Nimbostratus rankNimbostratus
Mar 07, 2011

Trunk ports for bandwidth and failover?

Is it possible to trunk 2 ports from a 6400 to a Cisco switch so that both wires act as a single wire? This would give us increased bandwidth while both wires worked and would allow redundancy if one ...
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Hamish's avatar
Hamish
Icon for Cirrocumulus rankCirrocumulus
Mar 08, 2011
Be aware that ion the cisco it's called a port-channel. On cisco, a trunk is an interface that handles tagged (802.1q) VLAN's

On the cisco it should be configured with something like 


interface port-channel201
  description port-channel to an F5
  switchport
  switchport trunk encapsulation dot1q
  switchport native vlan 999
  switchport trunk allowed vlan 
  switchport mode trunk

Then on the interfaces themselves you have something like 


interface gi3/36
  description F5 interface 1
  switchport
  switchport trunk encapsulation dot1q
  switchport native vlan 999
  switchport trunk allowed vlan 
  switchport mode trunk
  channel-protocol lacp
  channel-group 201 mode active

The native VLAN 999 just allows traffic on a particular VLAN is 802.1q headers are missing. You can add things like spanning-tree portfast etc or other embellishments as required.

H