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CUCM backup theory 2:1 senario

Mina-Saber
Level 1
Level 1

02fig12.jpg

It's known that in 2:1 backup theory we will use one node as a backup for other 2 nodes (whil using the maximum capability of the ova:10,000) but what if the 2 main nodes went down at the same time?

by logical thinking the backup node -with its maximum capacity- will allow only the first 10,000 regesteration requests from IP phones to accept thier registeration and reject the remaining IP phones registration requests, so does any one tried this senario before and has a proof that result will happned in such a case

1 Accepted Solution

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That is the other half of the cost-benefit (or risk-benefit) analysis of this architecture. A single node can support up to X device registrations (depending on OVA size), and that's that. If you have 20K devices across three 10K nodes, you can have one node go down and you are fine. But if two nodes go down you are out of luck. Your assessment is correct.

Maren

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1 Reply 1

That is the other half of the cost-benefit (or risk-benefit) analysis of this architecture. A single node can support up to X device registrations (depending on OVA size), and that's that. If you have 20K devices across three 10K nodes, you can have one node go down and you are fine. But if two nodes go down you are out of luck. Your assessment is correct.

Maren