[c-nsp] MTU / BGP

[CiscoNSP List]

Hi Everyone,



Have a new POP, 2 x ASR1000's (Acting as RR's), and 2 x ME3600's - We have another POP with 2 x ASR1000's also acting as RR's.



The 2 "new" ME's are peered to the "new" ASR's RR's, but if I try to establish BGP  session with the existing RR's, session establishes, but then drops on both ME's after ~4minutes...I *think* it's due to MTU, and have tried disabling path mtu discovery, but it doesnt appear to do anything? (also tried it with it enabled, and the results are the same)



i.e. no neighbour xxx.xxx.xxx.xxx transport path-mtu-discovery on the ME's, I see



Datagrams (max data segment is 9036 bytes):



On the ASR RR's I see



Datagrams (max data segment is 1940 bytes):




Any suggestions are greatly appreciated.



Cheers.