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Nexus 5k vpc and ESX LACP block bridged vlan in vDSwitch

I have 2 nexus 5K with vpc and one ESX that connected to nexus with this method: ESX vmnic 5 connected to Nexus1 eth 1/17 , ESX vmnic 7 connected to nexus2 eth 1/17
there is a vpc port-channel between Nexus1 and Nexus2 eth1/17 and a LAG in ESX with vmnic 5,7.

I have problem with VLAN bridge. when I bridge two VLAN in ESX (in Firepower or Mikrotik machine) spanning three protocol in Nexus block both vlan immediately. 
what is wrong? 
Could you help me please?
thank in advance.

1 Accepted Solution

Accepted Solutions

Well I Solved Problem
The problem was BPDUs packets that generated by Firepower or Mikrotik and received by Nexus. so I add "spanning-tree bpdufilter enable" under port-channel.
this is configuration example:

interface port-channel117
     description ESX-14 vmnic 5,7
     switchport mode trunk
     vpc 117
     spanning-tree bpdufilter enable
 
thank Mr. Mesghali "linkedin.com/in/rasoul-mesghali-875a653b " for guidance.

View solution in original post

4 Replies 4

Reza Sharifi
Hall of Fame
Hall of Fame

Make sure the vPC/Portchannel running between the Nexus switches and the ESX host is configured as a trunk.

HTH 

Port-channel is running and ESX is in trunk mode.
There isn't any problem in normal usage. but when I bridge 2 VLAN in ESX, STP block them immediately 

I added this config under Port-channel but didn't help:
# spanning-tree port type edge trunk
any idea?

Well I Solved Problem
The problem was BPDUs packets that generated by Firepower or Mikrotik and received by Nexus. so I add "spanning-tree bpdufilter enable" under port-channel.
this is configuration example:

interface port-channel117
     description ESX-14 vmnic 5,7
     switchport mode trunk
     vpc 117
     spanning-tree bpdufilter enable
 
thank Mr. Mesghali "linkedin.com/in/rasoul-mesghali-875a653b " for guidance.

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