Re: TE metric and graceful restart

[Kireeti Kompella <kireeti@juniper.net>]

On Fri, 26 Apr 2002, Alex Zinin wrote:

> I don't think there's anything in the OSPF & ISIS TE drafts that
> prevents links with max metric from being used in CSPF, so
> it is only more of discouragement, not prevention per se...

There is nothing in the OSPF and ISIS TE drafts that says anything
about how to do CSPF by design.  CSPF is local to the node doing the
computation; it was thought to be a vendor value-add, and hence not
specified.

So the best one can do is discourage -- one can never preempt, except
by removing the link from TE.  However, removing the link will negate
the value of graceful restart.

Hence the proposal: set b/w to 0, and metric to infinity.

Kireeti.