Hi, can you please give me your thoughts on this:
- Imagine a certain company has four sites in the US, each site connected to MPLS provider via 2xT1. CE Router is a Cisco 2821 SBC, running eBGP to provider PE. Main application running on MPLS is SIP trunking.
- In case circuit fails, company wants to put together a backup circuit in place using an Internet provider (different provider than MPLS for diversity reasons). Proposal for the backup circuit is to use a Cisco 881 router and connect to a provider "Secure Gateway" solution which lets the encrypted traffic between Cisco 881 and Service Provider Secure Gateway (encrypted with AES) safely reach the MPLS network.
Question and concern:
From a routing perspective, in case the main router/circuit fails and it fails over to the secondary router, if I am able to route accordingly to MPLS network, does it mean that SIP trunking traffic will work OK?
I am aware that QoS (thus VoIP traffic) is not supported over the Internet. My main concern though is prove that routing to SIP trunking/VoIP architecture on provider will work and can sustain voice calls.
If you can think of ways to let me test/simulate this, please let me know.
