Controller Based WLANs

Benefits of using RAP cluster support in 8.x
Q:

What are the advantages of configuring RAP for cluster support in 8.x?



A:

Without Cluster

•  In earlier codes, RAP needed to be terminated on VRRP-IP or LMS/BKP-LMS needed to be configured for redundancy.
• Clients connected to the RAP will be deauthenticated when the AP fails over to a different controller.
• The above behavior impacts the client traffic.
• In addition to this, RAP needs to download entire configuration on every rebootstrap or failover.

 

With Cluster

Starting 8.x, RAPs support clustering which will help avoid the above scenarios.

• Classic cluster controller supports redundancy for both APs and clients
• Passive entry will be created on the standby controller when it is L2 connected.
• RAP will form tunnel with all the cluster members using same inner-ip for ease of management.
• Cluster is limited to max 4 nodes in case of RAP.

Client will not be deauthenticated when the RAP fails over and will continue to pass traffic since there was a dormant entry created on the standby controller.

 

 

 

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