04-10-2014 07:32 AM
We have 5 uplink port channels with 2 nic each with UCS.
We were originally receiving the below error msg.
2014 Apr 4 15:53:22.780 GW-VBK1-ENT-NX1000 %VEM_MGR-SLOT8-2-VEM_SYSLOG_CRIT: VLAN_MISCONFIG : Po27 and Po26 are carrying vlans [3208-3209]. Configure a port-channel on a port-profile carrying multiple uplinks on the same VEM to avoid network loops. (Ignore if any of these ports are configured as local SPAN destination)
Noticed that 2 uplink profiles were trunking the same system vlans (control & packet) so we fixed this by removing the system vlans from the other uplink profile.
This fixed the above error msg from popping up and we don't see this error msg.
Although the issue has again popped where we see the below BLK ports/vlans on the vem;
WDC-VBK1-CTC-NX1000# module vem 5 execute vemcmd show port vlans
Native VLAN Allowed
LTL VSM Port Mode VLAN State* Vlans
17 Eth5/1 A 1 BLK 1
18 Eth5/2 A 1 BLK 1
19 Eth5/3 A 1 BLK 1
20 Eth5/4 A 1 BLK 1
21 Eth5/5 A 1 BLK 1
22 Eth5/6 A 1 BLK 1
23 Eth5/7 T 1 FWD 3204,3208-3209
24 Eth5/8 T 1 FWD 3204,3208-3209
25 Eth5/9 T 1 FWD 3205
26 Eth5/10 T 1 FWD 3205
49 Veth5 A 3204 FWD 3204
50 Veth6 A 3205 FWD 3205
561 Po63 T 1 FWD 3205
* VLAN State: VLAN State represents the state of allowed vlans.
WDC-VBK1-CTC-NX1000#
Any tips/cmds to check what might be causing the issue?
Thx
04-28-2014 08:59 AM
Hi Paresh,
What is the version?
Can you paste the running config of the type ethernet port-profiles?
Nexus1000v# sh run |beg "type eth"
Thanks,
Joe
04-29-2014 06:23 AM
This is now fixed. The root cause was two uplink profiles trunking the same control and packet vlans. Not sure why it popped up after the change but it's not appeared anymore after a reboot of the vem affected as well as the supervisor switchover.
05-01-2014 11:23 AM
Thanks for updating the thread Paresh!
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