[e2e] [Fwd: State of MPLS deployments today]

[Ping Pan]

Vadim Antonov wrote:
> Besides, backbone link failures are mostly handled by APS, and with some
> trickery one can use APS for switching a backbone link between paired
> routers in case if one goes down :)

You assume network topology is always rings. What is the extra cost of 
having APS? Also if it is not SONET, but DS3, how do you apply protection?

Thanks!

- Ping