When creating a trunk link between a Cisco Catalyst switch and a HP 5400zl R2 switch, it would be a good idea to have it work in LACP mode. ┬áIt is quite simple, you just create the bond on both switches and add the VLAN’s you want on to the trunk link. And here is a little configuration example to show how it goes.

On the HP 5400 side just use the following commands:

trunk A24,B24 trk1 lacp
vlan 10 tagged trk1
vlan 20 tagged trk1
vlan 4000 untagged trk1

On the Cisco Catalyst side it requires a few more commands, but isn’t difficult either. Just add interfaces to a channel group and add the VLAN’s on to the channel group, by doing the following:

interface range GigabitEthernet1/0/24,GigabitEthernet2/0/24
switchport mode trunk
channel-protocol lacp
channel-group 1 mode active
interface Port-channel1
switchport trunk native vlan 4000
switchport trunk allowed vlan 10,20
switchport mode trun