mpls over microwave

[mark.tinka at seacom.mu (Mark Tinka)]

On 6/Feb/15 00:31, Eric Louie wrote:
> I work for a fixed wireless provider, and our mpls-capable backhauls are
> all running mpls with 9200 MTU with no problem.  The only weirdness I
> encounter is if I have multiple equal-cost routes to the same location, one
> over MPLS and one not, end up having ping/unreachable issues from my
> monitoring equipment.  The solution has been to cost one path (the MPLS)
> lower than the other.  The only other problem I had was with radio's that
> didn't support larger 9000+ byte MTU packets - we've phased that radio out
> for now.  if you run MPLS with 1500 byte MTU, you'll have issues with 1500
> byte packets with the DF-bit set.  That was a nasty discovery in the
> production network, your mileage will not vary with that problem.

I'm curious why you'd have multiple paths in your network (equal-cost to
boot) where some support and others don't.

Mark.