UCS vSAN FC Port-Channel – Isolation due to channel mis-configuration on local or remote switch
October 15, 2018
If you are getting similar error such as this: “2018 Oct 15 17:20:05 N5K1 %PORT-5-IF_DOWN_BUNDLE_MISCFG: %$VSAN 101%$ Interface fc1/44 is down (Isolation due to channel mis-configuration on local or remote switch) san-port-channel 101″ when configuring san-port-channel on your Nexus down to the Fabric Interconnects make sure you have the proper port-channel mode.
By default UCS FI’s will use active mode. Which is familiar behavior to ethernet but here you need to define active mode actually on the san-port-channel and not the interfaces.
Log prior applying active mode where san-port-channel is empty:
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N5K2(config-vsan-db)# sh run int san-port-channel 101 interface san-port-channel 101 2018 Oct 15 17:20:05 N5K1 %PORT-5-IF_DOWN_BUNDLE_MISCFG: %$VSAN 101%$ Interface fc1/44 is down (Isolation due to channel mis-configuration on local or remote switch) san-port-channel 101 2018 Oct 15 17:20:09 N5K1 %PORT-CHANNEL-5-FOP_CHANGED: san-port-channel 101: first operational port changed from fc1/45 to none 2018 Oct 15 17:20:09 N5K1 %PORT-CHANNEL-5-PORT_DOWN: san-port-channel 101: san-port-channel 101 is down 2018 Oct 15 17:20:09 N5K1 %PORT-5-IF_DOWN_NONE: %$VSAN 101%$ Interface san-port-channel 101 is down (None) 2018 Oct 15 17:20:09 N5K1 %PORT-5-IF_DOWN_PORT_CHANNEL_MEMBERS_DOWN: %$VSAN 101%$ Interface san-port-channel 101 is down (No operational members) |
After applying additional configuration:
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N5K1(config-if)# sh run int san-port-channel 101 interface san-port-channel 101 channel mode active switchport trunk allowed vsan 101 2018 Oct 15 17:24:17 N5K1 %PORT-5-IF_DOWN_PORT_CHANNEL_MEMBERS_DOWN: %$VSAN 101%$ Interface san-port-channel 101 is down (No operational members) 2018 Oct 15 17:24:36 N5K1 %PORT-5-IF_UP: %$VSAN 101%$ Interface san-port-channel 101 is up in mode F |
Something easy to overlook especially when fighting against time.
Thanks,
Bart
Reference:
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How to improve your Hot Aisle and Cold Aisle approach in your Data Center
About The Author
Bart Dworzanczyk
Bart is passionate about new technologies and their impact on our lives. He does not believe in titles or amount of certifications but positive attitude and motivation. Simply the guy that make things happen. You can reach him via Linkedin or meet him on CSGO. Currently focusing on architecting and designing custom-build hybrid cloud solutions around IaaS, DRaaS, BaaS realm.