[j-nsp] Mixed Cisco/Juniper MPLS network

Eric Van Tol eric at atlantech.net
Wed Aug 14 12:22:27 EDT 2013

> -----Original Message-----
> From: juniper-nsp [mailto:juniper-nsp-bounces at puck.nether.net] On Behalf
> Of Saku Ytti
> Sent: Wednesday, August 14, 2013 11:49 AM
> To: juniper-nsp at puck.nether.net
> Subject: Re: [j-nsp] Mixed Cisco/Juniper MPLS network
> What is the issue if you allow non-MPLS devices in the loopback ACL for
> 'advertise-labels'.
> --
>   ++ytti

I've not been able to reproduce it in the lab, but traffic to destinations that are on non-MPLS devices have "problems".  Customers report slow bandwidth and/or page timeouts.  I thought perhaps an MTU issue, but physical interface MTUs network-wide are >9000 with MPLS MTUs set to 1546.  As soon as I added the non-MPLS devices to the prefix-list to prevent label allocation, the problems stopped.


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