You need to connect the second provider to another interface than the current provider uses. If you want redundancy for the second provider you’ll need to configure a second redundancy group.
No. As the VIP is tied to the interfaces that the current service provider uses you cannot use the same for the second provider as it would be using another interface.
What is the actual carrier technology on the side that you call WAN? Is it an internet connection where you terminate the current ITSP SIP service and potentially other type of series link SD-WAN and so on? If it is a internet connection are you planning on using the same connection for the new ITSP SIP service? I'm asking because in your original post you wrote this "The new provider will be connecting on an available Gig interface.", this part isn't very clear IMHO. Could you please elaborate on what you mean by that?
Below is a diagram and attached is the current config of ASR-1 with non-voice related elements omitted. Carrier 2 would be the new carrier. Although not shown, links are all going through a physical switch. Carrier 2 will be installing their own equipment and connecting to the switch.
My assumptions:
Carrier 2 connects their equipment to the switch and I have them point at the WAN VIP.
- Allows me to keep the same redundancy group setup, but unsure of how to IP it. Can I have both carriers in separate subnets and still point at the WAN VIP?
Carrier 2 connects their equipment to the switch and then we connect new links from the switch to Gi0/0/2 on each ASR.
- Requires me to set up a new redundancy group or can I add to current group?
I feel like I have a handle on the call routing/dial-peer side of things, it's just this HA config with two providers i'm unsure of as I've never implemented it before.
