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Peer Keep alive Lab Configuration with Aruba CX Switch Series 8320

Peer Keep alive Lab Configuration with Aruba CX Switch Series 8320

This lab configuration with Aruba Switch Series 8320, 2930.

 

Distribution uses UDP-based peer keep alive message to determine if any link goes down at this level or the peer has completely failed. The following opening rules must be followed to use peer keep alive links.

1.      An IP address must be configure for a peer keep alive VLAN interface and the same IP address must be configured as a peer keep alive distribution on the peer distribution switch.

 

2.      There must be logical layer 3 connectivity between the two IP address configured for the peer keep alive VLAN interface.

 

3.      STP cannot run on a peer-keep alive links.

 

4.      A keep alive VLAN can only have one member port.

 

5.      The default VLAN can’t configure for a peer keep alive. It will show an error message.

Considering the below facts:

  1. Configuration of the KA will be done on the Default VRF.
  2. The IP address on Primary and Secondary are respectively 10.x.x.x and 10.x.x.y
  3. The Loopback interface ID is 0.( Also can use physical interface)
  4. The correct dedicated VLAN assignment of the interfaces are done.

 

Here are the steps/commands (only highlighted portion) to configure the KL.

 

  1. Step 1: Creating a Loopback interface on both the VSX member switches.

 

On the Primary:

============

Create a Loop Back Interface if you do not have one.

interface loopback 0

ip address 10.x.x.x/32

            On the Secondary:

============

Create a Loop Back Interface if you do not have one.

interface loopback 0

ip address 10.x.x.y/32

 

  1. Step 2: Confirm the above IPs are reachable through the newly configured interfaces.

a.       Confirm with the ICMP test if the IP is reachable

b.      Check with ‘show arp’ to see which interface the IP addresses are learnt (it should be learnt on the newly commissioned link)

 

  1. Step 3: Create the KeepAlive Link for the VSX pair switches.

 

On the Primary:

============

vsx

    inter-switch-link lag XXX

    role primary

    keepalive peer 10.x.x.y source 10.x.x.x

 

On the Secondary:

============

vsx

    inter-switch-link lag XXX

    role secondary

    keepalive peer 10.x.x.x source 10.x.x.y

 

  1. Step 4: Check the KA link is established and working. (Troubleshooting step)

 

a. show vsx status keepalive (KA state should be like this ‘Keepalive State: Keepalive-Established’)

b. show vsx configuration keepalive


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