BIGIP “trunks” as they are called have been configured as follows:
Speed: auto speed/
LACP Mode: Active
LACP Timout: Long
Link Selection Policy: Auto
Frame Distribution Hash: Source/Destination IP address
Once I activate the port channel on the Cisco and BIGIP, the following etherchannel summary appears:
17 Po17(SU) LACP Gi1/48(P)
17 Po17A(SN) LACP Gi13/3(w)
The ports on the Cisco end attempt to bundle and for a moment, both have a “P” flag, until one of the ports dropout under Po17A as seen above. I have played with the various modes (on, active & passive) but to no avail. I even changed the port channel to a trunk (on both Cisco and BIGIP), but the ports refuse to bundle. Lastly, I have hardcoded the speed and duplex settings on both ends but again, the port channel does not bundle.
Even more bizarre, we have a datacentre design where all our network devices are configured as hardware HA pairs. Having applied the exact same configuration to our standby 6513 and BIGIP, the port channel interfaces bundle together as soon as the portchannel is activated.
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