[j-nsp] Issue with pseudo-wire attempting to establish across non LSP path

[David Ball]

On 28 September 2011 14:27, Peter K <pjkpub at gmail.com> wrote:
>
> Goal is to deploy label switch routers specifically functioning only as PE
> (distribution) nodes with direct connectivity to the P\PE (core) nodes and
> avoid the configuration required for a full mesh of LSP’s and l2vpn
> signaling between the P\PE core nodes and the PE distribution nodes.  Below
> is an outline of requirements.

  Safe to assume you're running LDP on your LERs as well ?

>
> I am noticing the pseudo-wire is attempting to establish a session across a
> routed link (with RSVP and MPLS enabled) without a defined LSP path causing
> any pseudo-wires using that path to go down.   The pseudo-wire
> re-establishes its connection when the IGP metric is modified and reroutes
> traffic or when then named LSP is created between the two PE nodes.
> Although this appears to be an issue regarding order of operations when
> deploying a new node(d) in this configuration, is there a mechanism in place
> to restrict pseudo-wires from trying to establish connections across a path
> without an established LSP path across the connection?

  Not sure I follow here.  All your L2vpns traversing a given link
from your LER to the LSR drop when a new one is being signalled?  When
they drop, what is the output of a 'show l2vpn connections' for them ?

David