04-07-2021 01:15 AM
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.
Solved! Go to Solution.
04-10-2021 11:56 PM
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.
04-07-2021 12:25 PM
Make sure the vPC/Portchannel running between the Nexus switches and the ESX host is configured as a trunk.
HTH
04-07-2021 10:19 PM
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
04-08-2021 03:25 AM
I added this config under Port-channel but didn't help:
# spanning-tree port type edge trunk
any idea?
04-10-2021 11:56 PM
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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