I setup a GRE tunnel between two locations served by a Comcast business class cable modem.
Config example. The remote end is the same. Tunnel73 ip address yy.yy.yy.yy 255.255.255.252 ip mtu 1476 ip tcp adjust-mss 1460 tunnel source xxxxx tunnel destination zzzzzzzzz tunnel path-mtu-discovery The two tunnel endpoints are ME3400s. I expected that this configuration would reduce the quantity of fragmentations needed by the router but looks like "IP Input" was up to around 20%. The user experience was bad since most web pages would fail to load. I thought "ip tcp adjust-mss" would signal help signal the users OSs to act appropriately given the situation. Have I missed something obvious? _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
