I posted an earlier message on this subject, but I wanted to explain it in more
detail.
I have been using mrtg for some time now and it works great.
recently, we notcied that our media servers (for veritas backups) were all
reaching the saturation point on thier network interfaces. All of the cards
are 100 Mbit full duplex. So we decided to upgrade these to Gigabit
interfaces. We picked one box to test on and the change was successful. So I
wanted to see if MRTG would detect the higher utilization. I pumped data
through the interface and saw that MRTG only graphed it at around 115 Mbits
max. Some people on the list told me I needed to tell it to use snmp v2 in
order to get the correct values.
I made this change yesterday, but saw the interface hit 9 Gigabits a second, at
a time when I don't think much went over this link.
Also, now, only on the switch that has the interface for the server we
upgraded, I am noticing several of the graphs are exactly the same. I know
this isn't possible because I know what travels over the other servers'
interfaces.
Has anyone seen anything like this. The only confgiuration change I made in
the mrtg config file was to change the AbsMax value and told it to poll with
snmp v2 but only for that single interface, which is one of dozens on that
switch.
Any help or insight is appreciated.
Thanks,
Taylor
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