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New Member

dual SIP gateways for failover


I am planning to implement two SIP gateways/CUBEs at SITE A and site B for redundancy PSTN callings .  This will be implemented on CUCM 8.5x and CUBE routers are 2951 with IOS 15.x.

which option is bettter?

1. to put two SIP gateways into one route-group and  a route-list points that route-group


2. put each SIP gateway to route-group A and group-route B and put both route-groups into a route-list

More than ten spoke sites will use those SIP trunks. 

Thank you in advance for any information.


Everyone's tags (3)
New Member

dual SIP gateways for failover

There's no difference between 1 and 2 as far as failover was concerned.

Route group is a container with specific digit manipulation rules.  If all GWs/Trunks share the same digit manipulation rules, I don't see the point of having multiple route groups.


Cisco Employee

dual SIP gateways for failover

Exactly, it's one & the same. I second Michael's opinion.


Hall of Fame Super Silver

Re: dual SIP gateways for failover

The additional difference is that with route group you are able to select distribution algorithm, so you do not have to use 1 trunk before the other, but rather do circular routing which will load balance the calls. My best practice for trunks/circuits that share the same destination and manipulate the digits the same is to place them into 1 route group with circular algorithm and point the route list to this route group.

In addition for SIP trunks with version 8.5+ you can now point to up to 16 SIP destination on the SIP trunk, so that may be an option as well.

HTH, please rate all helpful posts!


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