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Session Manager Primary & Secondary

Session Manager Primary & Secondary

(OP)
We have the following design (right now not getting any answers from our vendor):

CM6.0 core/CM6.0 ESS/LSPs at 6.2
MM5.2 Primary/Secondary
Session Mngr Primary/Secondary 6.something

Session Mngr is used only for SIP trunks to MM. So, if the primary Session Manager is off-line for some reason, does the secondary Session Manager take over automatically or does it take manual intervention? Furthermore, if the primary Session Manager is off-line and the Primary MAS servers are on-line, can the secondary communicate with the primary at all or is it strictly for the secondary MAS servers?

RE: Session Manager Primary & Secondary

The secondary SM is a second SM, not necessarily a backup/standby SM. If you would like to use the secondary SM for redundancy then routing needs to be setup in CM and MM to go to the second SM in the event that the first SM is unavailable. The SM's are both controlled by the same System Manager, so all the routing logic programmed in System Manager will be replicated to both SM's. Therefore, if the routing logic in System Manager is set to try the Primary MAS first then this applies to both SM's.

So assuming CM has the secondary SM as an option in the route pattern, when the primary SM is offline, CM will automatically send the call to the secondary SM which will in turn route it to the Primary MAS.

RE: Session Manager Primary & Secondary

(OP)
Thanks very much.

One other question about Session Managers. In our design, I see where our LSP locations have Session Manager IP Addresses - is there actually a Session Manager in those locations or is that for communication to the core Session Manager?

RE: Session Manager Primary & Secondary

R6.2 introduced Local Hostname Resolution where you can enter multiple IP addresses for the same entity/hostname and set priorities and weights to select what IP address to route to.

Ken Means

www.tel-is.com
"I find that the harder I work, the more luck I seem to have."
- Thomas Jefferson (1743-1826)

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