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Are there any latency requirements between a pair of Prime Infrastructure servers configured for HA?

ramnaray
Cisco Employee
Cisco Employee

Are there any latency requirements between a pair of Prime Infrastructure servers configured for HA? Do we have any recomendation for DR/HA Setup.

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nkavuri
Beginner
Beginner

The Cisco Prime Infrastructure High  Availability (HA) implementation allows for up to two primary Cisco Prime  Infrastructure systems to failover to one secondary (backup) Cisco Prime  Infrastructure system.
Cisco Prime Infrastructure HA can also be deployed  with geographic separation of the primary and secondary servers. This type of  deployment is also known as Disaster Recovery (DR), or Geographic Redundancy.  There are a couple of things to keep in mind when deploying Cisco Prime  Infrastructure in this mode:

- The primary and secondary server can be a  mix of a physical and a virtual appliance.
- The size of the secondary server  must be larger than or equal to that of the primary server
- Must be running  the same version of Cisco Prime Infrastructure on both the primary and secondary  Cisco Prime Infrastructure servers.
- Only one Cisco Prime Infrastructure  server license needs to be purchased. There is no need to purchase a license for  the secondary Cisco Prime Infrastructure server. The secondary server will use  the license from the primary when a failover occurs.

• Bandwidth:  Recommendation is to have 10 Mbps or more; however, we have seen HA used on DSL  links as well. Each deployment is unique, so it's better to test out the  failover scenario just as a sanity check.
• Latency: There is a continuous  heartbeat (every 5 seconds) that happens between the primary and secondary Cisco  Prime Infrastructure servers. Latency cannot be higher than this heartbeat  interval; otherwise the primary server is deemed as a failure by the secondary  server.