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.
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