Controller Based WLANs

What are the pre-requisites to enable intercontroller heartbeats in HA failover?
Q:

1. How to configure the intercontroller heartbeats in Ha failover?

2. Do controllers communicate to each other when intercontroller heatbeats are enabled?

3.  What traffic types should be allowed between the controllers to enable heartbeats?



A:

Configuration:

On the master controller, we must configure HA profile. We must specify:

 

1. HA group members.

2. HA member roles.

3.  Enable intercontroller heartbeats.

 

(Master) #configure t
(Master) (config) #ha group-profile "new"
(Master) (HA group information "new") #   heartbeat
(Master) (HA group information "new") #   controller 10.1.1.5 role dual
(Master) (HA group information "new") #   controller 10.1.1.3 role dual

 

Let us verify the HA profile:

 

(Master) #show ha group-profile new

HA group information "new"
--------------------------
Parameter                     Value
---------                     -----
Preemption                    Disabled
Over-subscription             Disabled
State Synchronization         Disabled
Pre-shared Key                N/A
Inter Controller heartbeat    Enabled
Heartbeat Threshold           5
Heartbeat Interval            100
HA group-member IP address    10.1.1.5 dual
HA group-member IP address    10.1.1.3 dual
HA group-member IPv6 address  N/A

 

We can see the member controllers communicating with each other over PAPI:



(local-5) (config) #show datapath session table 10.1.1.3

Datapath Session Table Entries
------------------------------

Source IP       Destination IP  Prot SPort DPort  Cntr    Prio ToS Age Destination TAge Packets    Bytes      Flags
--------------- --------------- ---- ----- ----- -------- ---- --- --- ----------- ---- ---------  --------- ---------------
10.1.1.5        10.1.1.3        17   8211  8211   0/0     0    0   9   1/0         99   0          0          FYI
10.1.1.3        10.1.1.5        17   8211  8211   0/0     0    0   0   1/0         99   752        94000      FCI
10.1.1.5        10.1.1.3        17   8495  8211   0/0     0    0   0   local       7    69         8625       FCI
10.1.1.3        10.1.1.5        17   8211  8495   1/0     0    0   0   local       7    0          0          FYI

 

 

Version History
Revision #:
2 of 2
Last update:
‎03-07-2016 02:50 PM
Updated by:
 
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