I had the same problem on our ME6524s. The MTU for GRE tunnels was hardcoded to 1500 which caused fragmentation, not a good thing in the backbone of an ISP.
Justin Pavel Gulchouck wrote: > I want that 1500-bytes packets goes through all my ipsec-protected > gre tunnels without fragmentation. I have big enough MTU at SVI and > all physical interfaces between tunnel source and tunnel destination > for it, so I do not want to decrease tcp mss. > 7200 and 3825 do what I want, but 6500/SPA-IPSEC-2G does not. :-( > > I've just found CSCek57760 - excactly my problem. They tell that it's > fixed in 12.2(18)SXF10 and 12.2(33)SHX, but I see the same symphtoms > on 12.2(33)SXH. Some ideas about configuration parameters, or only > wait for future releases and bugfixes? _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
