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Forum Discussion

Reed_Gregory_76's avatar
Reed_Gregory_76
Icon for Nimbostratus rankNimbostratus
Aug 21, 2009

LACP out of sync errors

We have a redundant pair of 3400 LTMs, and have LACP port trunks working to a stack of Cisco 3750G switches, and to our Cisco 6509 core. However we seem to have trouble getting the LACP to function p...
config
design
dennypayne's avatar
dennypayne
Icon for Employee rankEmployee
Aug 21, 2009
You have to use true LACP mode on the Cisco side, not Etherchannel (Cisco-proprietary). I think that the channel-group command uses Etherchannel by default unless you specify LACP (I'm not familiar with the exact syntax).

 

 

Also the trunk interface on the F5 needs to be in tagged mode on each VLAN to support the multiple VLANs (some people get confused because what F5 calls a trunk is not what Cisco calls a trunk).

 

 

Denny