Dan Mahoney, System Admin wrote: > Hey all, I'm trying to graph some gigabit interfaces on my cisco 6506 > 8-port gigabit blade and the graphs are maxing out at about 97 Megs. > > I noticed that I needed to use SNMPv2, but this hasn't seemed to alleviate > the problem, as things still get set thusly: > > ### Interface 10 >> Descr: 'GigabitEthernet3/8' | Name: 'Gi3/8' | Ip: > '219.128.66.73' | Eth: '' ### > > Target[78.4.110.254_10]: 10:[EMAIL PROTECTED]:::::2 > SetEnv[78.4.110.254_10]: MRTG_INT_IP="219.126.66.73" > MRTG_INT_DESCR="GigabitEthernet3/8" > MaxBytes[78.4.110.254_10]: 125000000 > > ^^^ The above looks right, as in it's 10X any fast ethernet interface > (which mrtg gives FIVE zeroes) -- but it's still 125 million bits, which > is 125 megs, right? > > Title[78.4.110.254_10]: Traffic Analysis for 10 -- ads-bsh-cr01 > PageTop[78.4.110.254_10]: <H1>Traffic Analysis for 10 -- ads-bsh-cr01</H1> > <TABLE> > <TR><TD>System:</TD> <TD>ads-bsh-cr01 in </TD></TR> > <TR><TD>Maintainer:</TD> <TD></TD></TR> > <TR><TD>Description:</TD><TD>GigabitEthernet3/8 Uplink to Arbinet > (AS18775) via han-bsh-cs05-g0-2 </TD></TR> > <TR><TD>ifType:</TD> <TD>ethernetCsmacd (6)</TD></TR> > <TR><TD>ifName:</TD> <TD>Gi3/8</TD></TR> > <TR><TD>Max Speed:</TD> <TD>125.0 MBytes/s</TD></TR> > > ^^^ And no matter what I do, this doesn't get fixed either. >
125.0MBytes = 1000Mbits = GigaBIT Ethernet. 125 * 8 = 1000 You might want to use the "bits" option in cfgmaker if you want to see bits per second in your graphs instead of bytes. It will then multiply the bytes by 8 to get bits. The issue is that SNMP records and reports the amount of traffic through an interface in octets, which are basically the same as bytes, or 8-bit words. MRTG needs to multiply this number by 8 to get the number of bits, which is how most folks think of it. Good call on using SNMPv2 to get the 64 bit counters that won't roll over inside of five minutes on a GigE interface. -- Unsubscribe mailto:[EMAIL PROTECTED] Archive http://lists.ee.ethz.ch/mrtg FAQ http://faq.mrtg.org Homepage http://www.mrtg.org WebAdmin http://lists.ee.ethz.ch/lsg2.cgi
