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Re: barak-online.net icmp performance vs. traceroute/tcptraceroute, ssh, ipsec

  • From: Jo Rhett
  • Date: Mon May 07 13:57:00 2007

On May 6, 2007, at 6:07 PM, Joe Maimon wrote:
Of course, and thats why I have cut down ip mtu and tcp adjust mss and all the rest.
Not making much of a difference.

Um.. sorry if you mean more than you said, but where did you cut down the TCP MTU? If you did it on your routers, then you are creating or at least complementing the problem.

The only way to make smaller MTUs work is to alter the MTU on both the origin and destination systems. Altering the MTU anywhere along the path only breaks things.

--
Jo Rhett
senior geek

Silicon Valley Colocation
Support Phone: 408-400-0550