I have resolved the session hanging issue by lowering the MTU value to 1920 on this router. But the BGP session is now flapping a lot and it's flapping with both the RRs now. Should I try the tcp-mss option or should i further play with the MTU value. I lowered the value to 1800 but the flapping was still there. Should I lower this further?
On Wed, Jun 1, 2011 at 1:02 PM, Mark Tinka <[email protected]> wrote: > On Wednesday, June 01, 2011 05:19:24 PM Muhammad Adnan > Mohsin wrote: > >> Hi Alexander & rest of the experts, >> The MTU size in the whole network is set to 4492. But on >> this router and the router connected to it, the MTU size >> recommended by the transmission team is 2000. So it's >> configured 2000 on this router and 1950 is configured on >> the router that connects to it. > > Is this portion of the network different due to limitations > with the Transmission backbone in this area? > >> Can somebody guide me >> how should i play with the MTU size to resolve this >> issue. > > If you can't raise the MTU on this router to be the same as > what the rest of your network has, as Alex has already > recommended, try lowering the MTU on your SSH host, if > possible. > >> BGP also flaps with one of the RRs. I assume that >> this could also relate to the MTU issue. > > You could try setting your TCP MSS to something lower than > what the link supports, e.g.: > > set protocols bgp tcp-mss 1000 > > You can keep playing with that until you get to a value low > enough that gets things working, but doesn't reduce the > performance of your BGP convergence. > > These are band aids. My recommendation would be to find out > if you can have a consistent MTU across the backbone, if at > all possible. > > Cheers, > > Mark. > _______________________________________________ juniper-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/juniper-nsp
