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Cell Relay Retreat>MPLS-OPS Archive>month:2004-Sep> msg00152



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Re: IP Routing problem after enabling MPLS?

  • From: sthaug@nethelp.no
  • Date: Wed, 22 Sep 2004 17:46:45 +0200
  • Cc: mpls-ops@mplsrc.com
  • Resent-Date: Wed, 22 Sep 2004 12:15:52 -0400

> OK, another mystery - the customer who's been bugging me now for the 
> last couple days still had problems - checking the connections initiated 
> from him, I found that all the connections were opened with mss 1452, 
> ignoring the settings from the template, as well as not being modified 
> by the other mss of 1432 --- I had to update their MTU to 1492, which 
> finally got them to work again ...
> 
> Does everybody have problems like this with MPLS???

No. We make sure to get equipment which can handle at least 1500 bytes
plus a reasonable number of labels.

In our MPLS network, 1500 bytes works end to end. Core links are often
POS, and typically handle around 4500 kbytes.

Steinar Haug, Nethelp consulting, sthaug@nethelp.no

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