As others have mentioned, on the Cisco side you can use ip tcp adjust-mss 1436. On the Juniper side, I'm not sure how widely the reassmble-packets know is supported across platforms, but the alternative is:
set security flow all-tcp mss 1436 The only downside is that this will adjust MSS on all traffic, not just GRE. Cheers, Ben On 03/11/2010, at 11:04 PM, Giuliano Cardozo Medalha wrote: > People, > > We are trying to close a GRE tunnel between juniper and Cisco routers without > success. > > We have tried a lot of MTU configurations but the traffic is suffering a lot > ... sometimes slow, sometimes do not open some pages. > > Have you ever configured something like this before ? > > Any tip ou configuration related to best practices ? > > Thanks a lot, > > Giuliano > _______________________________________________ > juniper-nsp mailing list [email protected] > https://puck.nether.net/mailman/listinfo/juniper-nsp > _______________________________________________ juniper-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/juniper-nsp

