Posted on 2008-06-23
I was wondering if there is a way to have a Cisco 2811 do auto failover when a circuit drops out. Here's my situation:
We are switching from an in-house IP PBX (on PRI) to a hosted VoIp solution (I wouldn't recommend!), and in doing so we've ditched our old PRI T1 in place for a new VoiceT1 (well data, but carrying voice). We also have another full data T1 we use for Citrix traffic to our parent company . Over the past 3 weeks (and I kid you not) the phone company has been troubleshooting the new T1. It comes up for an hour, or day, and drops out by the next morning. I currently have all my phones on two Cisco switches, on their own Voice Vlan. When ever line drops (daily) I have go back and patch the switches into the data network and switch the Vlans of the ports. The router has a serial T1 card and two Fastethernet ports, only one of which is currently in use. My Data T1 has a router with 8 ethernet ports on the back, and only one is currently being use.
What I want to do:
If the new T1 fails, I'd like the router to failover to the open enet port, assigned with a public IP of the data T1m, and start pushing the calls over the old data T1. We are already placing calls over this T1 as I have no confidence in the new T1 (we sacrifice quality of phone calls, and gumm up the rest of out bandwidth).
Although I am not formally trained, I am VERY comfortable with the IOS CLI.