Trunking on Nexus 5000 to Catalyst 4500

[Richard Lucht]

I have 2 devices on the each end of a Point to Point.  One side has a Nexus 5000 the other end a Catalyst 4500.  We want a trunk port on both sides to allow a single VLAN for the moment.  I have not worked with Nexus before.  Could someone look at the configurations of the Ports and let me know if it looks ok?

nexus 5000

interface Ethernet1/17

  description

  switchport mode trunk

  switchport trunk allowed vlan 141

  spanning-tree guard root

  spanning-tree bpdufilter enable

  speed 1000

Catalyst 4500

interface GigabitEthernet3/39

description

switchport trunk encapsulation dot1q

switchport trunk allowed vlan 141

switchport mode trunk

speed 1000

spanning-tree bpdufilter enable

spanning-tree guard root

[Reza Sharifi]

Nexus config is correct.

HTH

[glen.grant]

  Does he really want bpdu filtering on between devices ?
 

[Richard Lucht]

Thanks guys, we found the issue.  The Catalyst is on my side and the Nexus is on the side of the hosting center.  The hosting center moved his connection to a different Nexus 5000 and the connection came right up.  We dropped the spanning-tree guard root. 

It was working on the previous nexus when we set the native vlan for 141.  So we thought it was the point to point dropping the tags.

The hosting center engineer this it might have to do with the VPC Peer-Link loop prevention on the previous Nexus. 

Anyway it is working the way we need it to.