The MPLS-OPS Archive[Date Prev][Date Next][Thread Prev][Thread Next] [Date Index][Thread Index][Author Index][Subject Index] RE: CE-CE MTU Problem ...
Hi, Try changing the MTU to 1526 on all L2 devices within the network and Change the MTU (tag-switching mtu 1526) on all routers. Regards, MK -----Original Message----- From: Garry Glendown [mailto:garry@regio.net] Sent: 7/Oct/2004 12:00 AM To: mpls-ops@mplsrc.com Subject: [MPLS-OPS]: CE-CE MTU Problem ... Hi, after getting just about all the problems worked out (both MPLS connection related and not) and our customer up an running, a new problem came up ... while all "regular" connection going through the DSL dial up router work fine, the MPLS VPN connection of the customer has problems with the MTU (I suspect) - while normal telnet/terminal sessions work fine inside their MPLS VPN, ftp transfers don't ... problem is I can't get a tcpdump from the FTP site (AS400?), so I can't really pinpoint what is happening at the moment ... basic config is: all Cisco routers, MTU 1456 on the DSL link (changed down from 1480 originally used), MTU 1500 on the ethernet on either side of the CE routers, minimum MTU 1500 on the backbone w/ an mpls mtu of 1520 w/ ip tcp adjust-mss 1416 (which is messed up to 1432 by MPLS) Any ideas? Tnx, -gg ------- The MPLS-OPS Mailing List Subscribe/Unsubscribe: http://www.mplsrc.com/mplsops.shtml Archive: http://www.mplsrc.com/mpls-ops_archive.shtml ------- The MPLS-OPS Mailing List Subscribe/Unsubscribe: http://www.mplsrc.com/mplsops.shtml Archive: http://www.mplsrc.com/mpls-ops_archive.shtml
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