snmp的にはとれてるっぽいなぁ。
(というか、低いときにはとれているわけだし)

iso.3.6.1.2.1.2.2.1.10.2 = Counter32: 2792251181

mrtg.cfg的設定はこんなかんじ。

Directory[blackgoat3-privatetraf]: traffic
Target[blackgoat3-privatetraf]: 1.3.6.1.2.1.2.2.1.10.2&1.3.6.1.2.1.2.2.1.16.2:（むぎゅ）@blackgoat3.2ch.net::10
MaxBytes[blackgoat3-privatetraf]: 125000000
AbsMax[blackgoat3-privatetraf]: 125000000
Title[blackgoat3-privatetraf]: Traffic Analysis for blackgoat3.2ch.net (private I/F)
Options[blackgoat3-privatetraf]: growright, bits, noinfo, nopercent, withzeroes
YLegend[blackgoat3-privatetraf]: Bits per Second
ShortLegend[blackgoat3-privatetraf]: b/s
Legend1[blackgoat3-privatetraf]: Incoming Traffic in Bits per Second
Legend2[blackgoat3-privatetraf]: Outgoing Traffic in Bits per Second
Legend3[blackgoat3-privatetraf]: Maximal 5 Minute Incoming Traffic
Legend4[blackgoat3-privatetraf]: Maximal 5 Minute Outgoing Traffic
LegendI[blackgoat3-privatetraf]:  In:
LegendO[blackgoat3-privatetraf]:  Out:
PageTop[blackgoat3-privatetraf]: <H1>Traffic Analysis for blackgoat3.2ch.net (private I/F)</H1>
PageFoot[blackgoat3-privatetraf]: <HR size=2 noshade>This page is managed by Mumumu<BR>
<A HREF="../.">Return to menu</A>
WithPeak[blackgoat3-privatetraf]: ymw