04-11-2014 09:43 AM
I have 2 UCS 6120 fabric interconnects which both have VPCs to 2 x 5548s. First fabric interconnect uses Po260 & vPC 260 and second fabric interconnect uses Po261 & vPC 261. I used config sync to add "spanning-tree port type edge trunk" to int po 260 & 261. The commit worked properly, peers are in sync, etc. The problem is when I committed the command, int po 260 & 261 on the secondary 5548 went into "suspended by vPC". I can't figure out why they did this, the configurations are the same and all vPC consistency checks pass. To fix the issue, all I had to do was bounce the port-channel on the secondary 5548 (shut/no shut) after which it came back online. I only did this to Po260 so Po261 is still down so that I can troubleshoot further. Please see below:
vPC domain id : 70
Peer status : peer adjacency formed ok
vPC keep-alive status : peer is alive
Configuration consistency status : success
Per-vlan consistency status : success
Type-2 consistency status : success
vPC role : secondary
Number of vPCs configured : 7
Peer Gateway : Disabled
Dual-active excluded VLANs : -
Graceful Consistency Check : Enabled
Auto-recovery status : Disabled
vPC Peer-link status
---------------------------------------------------------------------
id Port Status Active vlans
-- ---- ------ --------------------------------------------------
1 Po255 up 1,10-13,26-29,151-156,180-181,200,318,331,399-417,
419-422,424-431,433-436,438-443,446-448,450,452-45
3,455-458,460-465,467-471,480-494,498-499,503,602-
633,644-657,659,663-664,698-701,800,805,850-851,89
0-891,899-904,906,908,912-950,952-958,975,987-988, ....
vPC status
----------------------------------------------------------------------------
id Port Status Consistency Reason Active vlans
------ ----------- ------ ----------- -------------------------- -----------
171 Po171 up success success 1,10-13,26-
29,151-156,
180-181,200
,318,331,39
9-417,41....
260 Po260 up success success 10-13,26-29
,663-664,89
0-891
261 Po261 down* success success -
---------------------------
sh int po 261
port-channel261 is down (suspended by vpc)
---------------------------
Any help would be appreciated
04-13-2014 12:40 PM
Did you check the o/p of show vpc consistency-parameters for the portchannel261?
04-14-2014 04:09 AM
Yes, I did check that and all parameters match as follows:
5548-2# sh vpc consistency-parameters int po 261
Legend:
Type 1 : vPC will be suspended in case of mismatch
Name Type Local Value Peer Value
------------- ---- ---------------------- -----------------------
Shut Lan 1 No No
STP Port Type 1 Edge Trunk Port Edge Trunk Port
STP Port Guard 1 None None
STP MST Simulate PVST 1 Default Default
lag-id 1 [(7f9b, [(7f9b,
0-23-4-ee-be-46, 8105, 0-23-4-ee-be-46, 8105,
0, 0), (8000, 0, 0), (8000,
0-5-73-d4-d5-fc, 1, 0, 0-5-73-d4-d5-fc, 1, 0,
0)] 0)]
mode 1 active active
Speed 1 10 Gb/s 10 Gb/s
Duplex 1 full full
Port Mode 1 trunk trunk
Native Vlan 1 10 10
MTU 1 1500 1500
Admin port mode 1
Allowed VLANs - 10-13,26-29,663-664,89 10-13,26-29,663-664,89
0-891 0-891
Local suspended VLANs - - -
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