Nexus 5548: command failed: port not compatible [speed]
I connected a set of 5548's with vPC to 3945. I have a port-channel (po1) configured on the 3945 with g0/0/0 and g0/1/0. I set the speed on the 5548's to 1g and tried to create a channel-group (po1) on the 5548 eth1/1. I received the following error:
C5548-2(config-if)# channel-group 1 mode active command failed: port not compatible [speed]
I removed the channel-group from the interface and set the speed. Essentially, I have a channel-group on the 3945 connected to each 5548 as individual L-2 links (non-vPC). I have essentially created a loop and now receiving "FWM-2-STM_LOOP_DETECT: Loops detected in the network".
My question(s) to the group are:
1. Is the issue a speed discrepancy between the vPC link; which is 10gig and the eth 1/1 set to 1 gig?
2. Can I create a channel-group on an 5548 with vPC ethernet interface that is set to 1gig ?
3. Any recommendation other then shutting down one of the uplinks from the 5548?
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