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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: Initial Route Server Stats for MAE-East
On Sun, 22 Oct 1995, Tim Bass wrote: > > > > On Sat, 21 Oct 1995, Mike O'Dell wrote: > > > > > remember that using pings to sample connectivity to a very busy > > > cisco router is not a very reliable probe for several reasons. > > > Returning pings is a low-priority task in the first place, and > > > they are rate-limited, so if the processor is busy processing > > > lots of BGP updates and several folks are fribbling with it > > > using ping or SNMP, it is less than clear what they will see. > > > > > > -mo > > > > Michael A. Nasto quips: > > > OK! Agreed. So then, what would you use? > > > > Have you ever been in a classroom and had a student raise his hand, > answer every question, ask intelligent questions, etc. just to prove > to the class how smart he or she is. This is the premise of > the 'Two Mike's Interchange' above. One says, HEY! I know ping packets > are a lower priority than everything else in a *CISCO* router > LOOK AT ME (wave wave). Then another kid in the class quips... > if PING is not what you would use, give us a better utility. > > In fact... EVERYONE ( okay 99.73 percent :-) uses PING. After all > router LOAD is router LOAD.... and if a few ICMP packets can't get > back in a subjectly reasonable time.. then DUH.... "da network > is busy......" BGP updates take bandwidth just like any other packet. > > Of course the 0.27 percent, zen routing gods of the universe just > feel the load and the harmonic BGP update patterns and PING between > the BGP updates.... for a better answer. > > Sorry, I could not resist.... and apologize for the satire. PING!! > PING!! PING!! > > Tim > Yes, Tim. I always hated the "geeky" kid who always raised his hand or had an answer for everything, too. But, I was serious with this question. I thought it was rather obvious, too, that the router may be busy so, what is the point? If you don't use 'ping' or 'traceroute', what else do you use? I thought he had an answer. Obviously not. ---------------------------------------------------------------------------- Michael A. Nasto Customer Support Manager NYSERNet, Inc. Phone: 315-453-2912 x 256 200 Elwood Davis Road Fax: 315-453-3052 Suite 103 Email: [email protected] Liverpool, NY 13088-6147 [email protected] +++++++++++++++++++++++++++ Carpe Diem +++++++++++++++++++++++++++++++++++++
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