nanog mailing list archives
Re: MTU of the Internet?
From: Marc Slemko <marcs () znep com>
Date: Wed, 4 Feb 1998 13:49:06 -0700 (MST)
On Wed, 4 Feb 1998, Eric Germann wrote:
With all the paranoids trying to block all ICMP, not just ICMP_ECHO, doesn't that essentially break PMTUD. 576 may not be efficient, but its probably the safest to assume.
No, it just means that these paranoids should get a clue. Even servers coloed at large NSPs sometimes have suck bogus filters applied by the NSP that should know better. On a side note, from what I understand Win95 implements blackhole detection for this situation (don't know of many Unixes that do that...), although it isn't enabled by default and you probably need patch mumble and mumble to get it. Not sure if it works or not.
Current thread:
- Re: MTU of the Internet?, (continued)
- Re: MTU of the Internet? Jeff Stehman (Feb 05)
- Re: MTU of the Internet? Marc Slemko (Feb 05)
- Re: MTU of the Internet? Phil Howard (Feb 05)
- Re: MTU of the Internet? Kevin A. Smith (Feb 05)
- Re: MTU of the Internet? Jeff Stehman (Feb 05)
- Re: MTU of the Internet? Phil Howard (Feb 05)
- Re: MTU of the Internet? Marc Slemko (Feb 05)
- Re: MTU of the Internet? Phil Howard (Feb 05)
- Re: MTU of the Internet? Perry E. Metzger (Feb 05)
- Re: MTU of the Internet? Dan Foster (Feb 05)
- Re: MTU of the Internet? Marc Slemko (Feb 04)
- Re: MTU of the Internet? George Swallow (Feb 05)
- Re: MTU of the Internet? ken emery (Feb 05)
- Re: MTU of the Internet? Frank Kastenholz (Feb 06)
- Re: MTU of the Internet? Phil Howard (Feb 06)
- Re: MTU of the Internet? Stephen Sprunk (Feb 06)
- Message not available
- Re: MTU of the Internet? Jay R. Ashworth (Feb 06)
- Re: MTU of the Internet? Perry E. Metzger (Feb 06)
- Message not available
- Re: MTU of the Internet? Jay R. Ashworth (Feb 06)