MPLS TE reoptimization

[Volodymyr Khrystenko]

Does MPLS TE reoptimization cause packet loss or not? And what happens with "old tunnel"? Is it teared down or maintained?

[Harold Ritter · Accepted solution]

Hi Volodymyr,

In MPLS TE, there is a notion of "make before break", where the new tunnel will be signaled before the old tunnel is taken down. This prevents packet loss.

Regards