Cube Redundancy Queston

[scooter817]

Hi Everyone

I received a call this morning at 3:30am stating that no one in the call center could make outgoing or receive incoming calls. Sure enough I drove into the office and the cube router was down, the rack it was in experienced a power surge and all the devices got turned off. I plugged the router up directly into the wall and we were back in business, I have another cube router in our data center and they have no redundancy between the one onsite here and the one across town in the data center. Can redundancy be setup between these two boxes so if that would happen again the calls would fail over to our other location?

Thanks

Eric 

[R0g22]

That won't be a supported/validated deployment irrespective of the latency b/w the locations for a CUBE B2B HA.
It is recommended to have both the Active/Standby pair on the same switch for maximum availability for call preservation. Additionally, in a CUBE HA for call preservation setup, WAN cannot terminate directly on the CUBE-HA pair.

[scooter817]

Nipun

My manager told me that the previous person in my position had failover setup so that if the interface went down the traffic would route to our other location. I've looked at the 2 configs side by side and I don't see anything that would point to that. I've uploaded them and when you have a second can you look at them and tell me do you see anything that would show the cubes are setup for  redundancy.

[R0g22 · Accepted solution]

Like I said, you can do it and no matter how good (on a positive side) the latency is, it's not supported and not recommended.
Further, I checked the config on one of the CUBEs and no it is not setup for HA/HSRP/Redundancy. Also, the GW is setup for both H.323-TDM and SIP-SIP CUBE.

[scooter817]

Thanks Nipun

[R0g22]

Also, if you are running CUBE HA, you cannot have SCCP Resources/STCAPP ports/TDM/SRST/VXML co-located. So effectively your routers have everything minus HA and VXML so you cannot have this configured as an HA pair.

[scooter817]

Thanks for the info that's good to know, now I'll let my manager know that it's not configured as he was told.

[R0g22 · Accepted solution]

Yup. Your manager might have been informed about Geo Redundancy though he might not be aware of this. This is basically two CUBEs at different locations in a ACTIVE/ACTIVE format doing load-balancing. The name says redundancy but it is not actuall redundancy. If a box fails, it will drops all calls. However, all future calls will be sent/routed through the other ACTIVE cube. See if this suits the needs, a little.

You would need CUBEE-RED license(s) for this setup.

https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/voice/cube/configuration/cube-book/voi-cube-licensing.html#concept_0D14CC5E24B343AB95831899E9C86672

[scooter817]

Thanks again for the info I really appreciate it