Nexus VPC Keep Alive

[etiennevella]

When I configured the vpc keep alive link using mgmt 0 interface  I found no issues and it worked perfectly.  The only concern with this  is that its only one link and if something happens to it the VPC Keepalive would fail.

I checked some guides and they all suggested to do a  port-channel with 2 interfaces and to configure the keep alive IP address on the port channel.  When doing the “no switchport” command on the interface and apply the ip address, the interfaces in question are placed down with error message (L3 Not Ready).  Cisco Documents suggests that when this system error occur to check L3 License(“L3 license not found or router card not present” ).

Currently we don't have a L3 because we need the setup purely for Datacentre switchings. Is there another way on how to have a keep alive link with 2 links.

Any Ideas?

Thanks

Etienne

[cflory]

A reference link for you:

http://www.cisco.com/en/US/prod/collateral/switches/ps9441/ps9670/configuration_guide_c07-543563.html

Things I've configured in the past for VPC peer-link on port-channel:

SwitchA:

vpc domain X

  peer-keepalive destination source

!

interface port-channelXX

  description Uplink-to-SwitchB

  switchport mode trunk

  vpc peer-link

  spanning-tree port type network

!

interface Ethernet1/47

  description vPC-Peer-Link

  switchport mode trunk

  spanning-tree port type edge

  channel-group XX mode active

!

interface Ethernet1/48

  description vPC-Peer-Link

  switchport mode trunk

  spanning-tree port type edge

  channel-group XX mode active

SwitchB:

vpc domain X

  peer-keepalive destination source

!

interface port-channelXX

  description Uplink-to-SwitchA

  switchport mode trunk

  vpc peer-link

  spanning-tree port type network

!

interface Ethernet1/47

  description vPC-Peer-Link

  switchport mode trunk

  spanning-tree port type edge

  channel-group XX mode active

!

interface Ethernet1/48

  description vPC-Peer-Link

  switchport mode trunk

  spanning-tree port type edge

  channel-group XX mode active

[etiennevella]

Hi,

Thanks for your reply but i'm more conserned regarding VPC keep alive link on a port-channel. All i want to gain is to have the keepalive link with 2 interfaces (for redundancy)

Thanks

Etienne