The MPLS-OPS Archive[Date Prev][Date Next][Thread Prev][Thread Next] [Date Index][Thread Index][Author Index][Subject Index] Re: IP Routing problem after enabling MPLS?
OK, I'm officially out of ideas ... I was at our customer all day today ... setting up the MPLS VPN wasn't a problem, worked like a charm ... the problem is the Ethernet bridge our customer is operating on ... While I was able to configure the switch involved to run with an MTU of 1512, as well as our core routers which run on GigE ... but I have not been able to configure the FE's to run with anything larger than the 1500 MTU, keep getting the "doesn't support user settable MTU" ... Now, for the MPLS VPN we're implementing for our customers, this wouldn't be that much of a problem, as most of the communication will be to DSL dialups, which are running with way below the 1500 MTU ... but the MPLS network is also on the backbone (of course), and the ethernet bridge (50mbit limited 100MBit link) to the customer ... and that's where it is all messed up at ... while many web pages e.g. will continue to work, some (like e.g. heise.de or ebay.com/de) are hardly usable if at all ... I've tried messing around with the "ip mtu" which of course didn't work either ... also neither google nor cisco.com were much of help ... Is it just the IOS versions I'm running? How do other people do their MPLS? I refuse to believe that everybody running MPLS does so only on either GigE, E3, POS or others, but not FE or Eth ... somewhere I read that Cisco FEs do not support larger MTUs, but "show cont" will display a max MTU of 1524 (while GigE has a Max MTU of 1536, but allows for higher sizes in "conf t" ...) Help appreciated, -gg ------- 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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