[j-nsp] GRE Tunnel bet JUNIPER and CISCO

Linder, Todd todd at onenet.net
Wed Nov 3 10:15:02 EDT 2010

I recently had and a similar issue between a Juniper and a Cisco router,
I resolved some of those symptoms by adjusting the tcp maximum segment
size. You may have to play with this setting until it yields the best
result. I use the "ip tcp adjust-mss 1300" and applied it to the
interfaces used. This size seemed to yeild the best results for my

Todd Linder
Network Support Engineer
Oklahoma's Telecommunications Network

-----Original Message-----
From: juniper-nsp-bounces at puck.nether.net
[mailto:juniper-nsp-bounces at puck.nether.net] On Behalf Of Giuliano
Cardozo Medalha
Sent: Wednesday, November 03, 2010 8:04 AM
To: juniper-nsp at puck.nether.net
Subject: [j-nsp] GRE Tunnel bet JUNIPER and CISCO


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,

juniper-nsp mailing list juniper-nsp at puck.nether.net

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