North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: ATM Traceroute middle packet loss?
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. Eric At 05:11 PM 9/27/96 -0700, maillists wrote: > >> hmm.. >> Seems that every traceroute across an ATM link will result in the middle >> packet being dropped. The ATM Switch nor the Router have any idea that it >> is the second packet.. weird! Anyone have a clue to why that is? >> >> Tracing the route to ns2 >> 1 206.222.97.6 44msec 44msec 44msec >> 2 ns2.acsi.net (206.222.97.50) 44 msec * 44 msec > >I don't think it has got anything to do with ATM. I >bet you that ns2.acsi.net is a Solaris 2 box. Solaris >drops every other icmp echo if it comes too close to >the last one. This I was told is an inadvertent bug >although Sun could claim it to be a feature against >an ICMP flood attack ;-) > >Try tracerouting to sun.com (a SunOS box) and >playground.sun.com (Solaris 2). You'll see the difference. >Also try traceroute with the -q parameter greater than >the default of 3 packets each destination. > >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 >-- > > - - - - - - - - - - - - - - - - -
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