AAA, NAC, Guest Access & BYOD

Acceptable network latency for ClearPass Cluster Sync over WAN

by on ‎04-08-2015 04:56 AM

What is the accepted level of network latency between different nodes in a ClearPass cluster to synchronize without errors over a WAN connection?

 

Environment : Cluster running ClearPass 6.0 to 6.4.x versions in a WAN network

 

Aruba has tested up to 200 ms and seen cluster sync to be fairly stable with the following caveats:

  • As the network latency approaches this limit or exceeds it, it could be noticed that the subscribers lag behind, especially during periods of activity and provisioning/configuration changes on the publisher. The subscribers will attempt to catch up once activity dies down.
  • At latencies much higher than this number, the subscribers may never catch up completely and will get dropped from the cluster eventually.
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