On Fri, May 07, 2004 at 11:00:21PM +0200, Michael Markstaller wrote: > > Sounds like the 32 bit SNMP counter wrap issue. Try changing the top > line in your config to use SNMPv2, allowing for 64 bit counters. Search > the list archives for a better explanation. Use the > docs to understand > the SNMP options.
Is it just me, or is this quote garbled for everybody? > Garry, sorry but this wasn't a very helpful answer.. > 1. 32bit counters *could* wrap starting at ~114Mbit in 300 seconds so > this is not the problem here with a DS3 Not quite so. Above ~114Mbps the counter wrapping isn't noticable anymore. It will look as if the counters did _not_ wrap and traffic is low. Example numbers: ... 1234121 ... 2312345 (counter has wrapped, mrtg doesn't know) ... 3123212 (counter has wrapped, mrtg doesn't know) Below ~114Mbps the wraps will still occur. Each time this happens, MRTG is influenced. Example: ... 2^32 - 12312121 ... 2^32 - 23113245 (counter has wrapped, mrtg does know) ... 2^32 - 32612312 (counter has wrapped, mrtg does know) At 6 Mbps sustained, the counters will increase with 6 * 1000 * 1000 * 300 / 8 bytes which is 225,000,000. After 19 normal updates, the counters _will_ wrap. However, this means that during 19 intervals no problem should be seen. I think the original poster is confusing bits and bytes. OP>The 5526.2 isn't right- but it's higher- the actual bandwidth available OP>top end OP>configured on the router is the ' dsu bandwidth 44210' that Bell South OP>had me put in- Note that 44210 divided by eight is _very_ close to 5526.2 OP>They control the speed down to 6 MB on their end to meet our SLA. OP>MaxBytes[xxx.xxx.83.253_Serial1_0]: 5526250 If that's _really_ 6 MB (not 6 Mb) then MaxBytes should be 6,000,000 so I guess that's not going to be true. Alex -- I ask you to respect any "Reply-To" and "Mail-Follow-Up" headers. If you reply to me off-list, you'd better tell me you're doing so. If you don't, and if I reply to the list, that's your problem, not mine. -- Unsubscribe mailto:[EMAIL PROTECTED] Archive http://www.ee.ethz.ch/~slist/mrtg FAQ http://faq.mrtg.org Homepage http://www.mrtg.org WebAdmin http://www.ee.ethz.ch/~slist/lsg2.cgi
