Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. And see here for current known issues.

New Member

NEXUS 5K RSTP Blocking port channel only for single VLAN

Hi guys have an unusual problem with our 5K's.Our setup is two 5K's in a hot standby pair 

We have created a new VLAN on the 5K's hoever PVRSPT is blocking one of the Port Channel on the second switch out to the next step of the Network(3750 Stack consisting of 2 switch's)  It is only doing this for one of nearly 70 vlans we are using on this setup.  EVen if we change the priorty for the Affected VLAN on the second 5K(where the Port Channel is Blocked) to make it the root bridge the port channel still statys blocked.

We tried deleting the affected vlan and readding using a different VLAN ID however we get the same symptons.

Has anyone come across this issue before. Thanks for your help in advance.

Regards

Wes

236
Views
0
Helpful
0
Replies
CreatePlease to create content