nanog mailing list archives

Re: ATM Traceroute middle packet loss?


From: "Larry J. Plato" <ljp () ans net>
Date: Sat, 28 Sep 1996 00:54:12 +0000 (GMT)

This sounds a lot like the problem last year in MAE-East before
they upgraded to FDDI.  A bug in *many* hardware implementations
dropped packets if the interpacket arrival time was too small (even
though the inbterpacket spacing was within spec.)  I don't recall 
anyone ever fixing the problem tho'  It even affected several 
sniffers so they would not see the packets, and hence not record 
the drop....

Larry Plato



No, it's not a Sun issue, it drops every other packet only if I got over
the ATM Backbone.  I can trace to another router, a ATM Switch, A CSU
panel, anything and I get the same dropped packet.  
I did further testing, and it is every other packet, not just the middle one.

Looks like Solaris has the same bug as the ATM link you
described. I see every other packet dropped by a
Solaris box on my ethernet but not by a linux box
on the same ethernet.

Sanjay.

---------------------------------------------------------------
Web Professionals, Inc.          
20370 Town Center Lane, Suite 245               +1 408-865-0899
Cupertino CA 95014 USA             http://web.professionals.com
---------------------------------------------------------------
  World's largest Webspace provider with dedicated domain sites
  Ref: Open Market's Commercial Sites Index www.directory.net
--


- - - - - - - - - - - - - - - - -


Current thread: