06-27-2011 07:37 AM - edited 03-01-2019 06:57 AM
I have redundant Nexus 7010, with several Nexus 2248 (Fex) attached.
The N2k's are already attached and running and I just started the port configuration of the N2k's.
When I tried to configure a port-channel on a Fex-port, it didn't go through and I got the message, this wasn't supported:
n7k1(config)# int e110/1/1
n7k1(config-if)# channel-group 3101
channel-group not supported for interface type
The N7k is running (the latest) software-version 5.1(3).
What am I missing? Does anyony have an explanation or solution for this?
06-27-2011 07:50 AM
Quick question. In what configuration are your FEXs attached to the N7K?
Active-active (Each FEX dual-homed to two N7Ks) or straight-through (Each FEX connected to one N7K)?
06-27-2011 07:58 AM
From looking around it seems this is a N7K software limitation, that should be allowed soon.
I can find any official documentation other than this comment by Lucien
https://supportforums.cisco.com/message/3312105#3312105
I will connect a FEX up to a N7K tommorrow and confirm if I get the same result
06-28-2011 12:24 AM
each FEX is connected redundantly to a single N7k, the switch-redundancy for the servers comes from a second FEX in each rack, that connects to the other N7k.
I'v already been searching for any clues/documentation regarding this and didn't have any luck neither.
If you could check/confirm that on your equipment, that would be a big help, thanks..
06-28-2011 12:57 AM
Ok, I've just been informed by our Cisco SE, that port-channels aren't supported on N2ks, connected to N7ks, yet.
Apparently, this will be supported with the upcoming v5.2.
06-28-2011 11:32 AM
Did your Cisco SE say (or can anyone else tell me) if the vPC from a single FEX to a redundant pair of Nexus 7000s will be supported in NX-OS 5.2? I believe that's considered the dual-homed FEX/active-active topology, and works when attached to a Nexus 5000.
01-31-2013 02:12 AM
Same question.
Did multi-humed FEX to Nexus 7000 (in active/active) is supported in NX-OS 5.2/6.1?
01-31-2013 07:36 PM
1 FEX to 2 parent 7Ks is not supported at this time with the current software releases
02-07-2014 08:26 AM
What about two FEXs and one 7K? We are running version 6.2(6) and cannot create even a simple port-channel between the two FEX ethernet interfaces. I understand this should really be configured as a VPC, but since we only have one 7K there is truly no VPC Domain and the 7K sends the error "ERROR: Operation failed: [peer-keepalive not configured] " when trying to configure a VPC for those two FEX ethernet interfaces.
02-07-2014 08:36 AM
Hi David,
The problem you're facing is very similar to the issue being seen by another user who posted Port channeling a node between two 2248's in the LAN forum.
As you'll see from the link to the Nexus 7000 Fex Supported/Not Supported Topologies document, the only option with a single Nexus 7000 and two or more FEX is to use active/standby NIC teaming on the server.
Regards
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