Cisco C220 M3 - VIC 1225 to N7k

[Barry Winstanley]

Hi, 

I have a Cisco C220 M3 server with a VIC 1225 card installed which is running ESXi 5.5.  We have a pair of 7k's with a vpc peer link.  The 10gb ports on the server are split between the N7k's.  A management vswitch is configured, with both nics active.

We have created a standard vpc/port-channel configuration for the server.  When both server nics are connected to the 7k's, management connectivity is lost.  Unplugging one server NIC (either one) will re-estbalish connectiivty.

At first the port channel was configured with LACP i.e. channel-group mode active.  I asked our network person to change it to channel-group mode on  but this still didn't work.

Any ideas?

Much appreciated, cheers

[Amit Singh]

How does VPC config look like on N7K's? Please can you paste the config here.

Please could you also paste a screen-shot of the vCenter networking config tab.

[Barry Winstanley]

Hi Amit, below is the config from the n7k.  I have also attached the networking config from the ESXi host.

interface port-channel 19

  description *** EXSi server ***

  switchport

  switchport mode trunk

  switchport trunk allowed vlan 8,9

  spanning-tree port type edge

  vpc 8

  no shutdown

interface Ethernet 3/20

  description *** To_EXSi server ***

  switchport

  switchport mode trunk

  switchport trunk allowed vlan 8,9

  channel-group 19 mode active

  spanning-tree port type edge

  no shutdown

The configuration identical on both Nexus switches. Peer and keepalive links are up and running (as other vPCs are up and working fine)

vpc domain 1

  role priority 10

  peer-keepalive destination 10.210.9.4 source 10.210.9.3

  auto-recovery

!

interface port-channel 2

description *** VPC peer-link ***

  switchport

  switchport mode trunk

  switchport trunk allowed vlan 6-9,15-21,25-37,40

  spanning-tree port type network

  vpc peer-link           

  no shutdown

interface Ethernet 3/15

  description *** VPC peer-link N7K-B E1/15 ***

  switchport

  switchport mode trunk

  switchport trunk allowed vlan 6-9,15-21,25-37,40

  channel-group 2 mode active

  spanning-tree port type network

  no shutdown

interface mgmt0

vrf member management

ip address 10.210.9.3 255.255.255.0

no shutdown