12-11-2012 02:46 PM - edited 03-18-2019 12:16 AM
With VCS cluster implementation, there are four options for endpoints to connect to a cluster: SIP Outbound (preferred), DNS SRV (2nd choice), DNS Round-robin, and Static IP (lease preferred). I’m using option 1. With option 1, an EP register to the peers in the cluster at the same time. However, when I shut one of the VCSes down, the video EP’s take about 3 minutes to be able to make/receive calls to/from other video EP’s. Is this the expected behavior or there are some parameters needed to be tuned?
Thanks!
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12-11-2012 04:28 PM
This is very depend on deployment scenario and have no single “best” parameter it into all deployment scenarios.
Most of SIP UAs will try to update registration in half-of-refresh time, so you can calculate how often VCS receive registration request from all SIP UAs.
12-11-2012 03:47 PM
If SIP UAs registered on all cluster VCS by using SIP Outbound, should able to receive the call without downtime (initiate the call is depend on UA implementation which SIP server to be select as outgoing call proxy).
What is “Outbound registration refresh minimum” and “Outbound registration refresh maximum” configuration on VCS?
If you change “Outbound registration refresh minimum (seconds)” to small number (for example, 30 sec.), you should see difference…
12-11-2012 03:54 PM
right now they are the defaults:
Outbound registration refresh minimum” : 300 seconds
“Outbound registration refresh maximum : 3600 seconds
What would be good parameters to use without causing any potential issues yet provide quick time to initiate the calls?
Thanks!
12-11-2012 04:28 PM
This is very depend on deployment scenario and have no single “best” parameter it into all deployment scenarios.
Most of SIP UAs will try to update registration in half-of-refresh time, so you can calculate how often VCS receive registration request from all SIP UAs.
12-11-2012 04:33 PM
Thanks again!
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