[mrtg] Re: Wrong max speed

[PAUL WILLIAMSON]

Pavel,

Are you sure ifSpeed is defined as a counter?  On the systems 
I have checked, it's a gauge.  I guess that point is moot because 
the max value definable is 4,294,967,295.  Have you tried the 
IF-MIB::ifHighSpeed?  That should report a 64bit number, but 
it is still defined as a gauge.

Paul

>>> "Pavel Ruzicka" <pavouk at pavouk.org> 01/18/06 8:05 AM >>>
Hi,

I know about 64bit counters for data (ifHCInOctetsm ifHCOutOctets), I
use
them every day, but I don't know about counter with "bandwidth"
information,
which is normally IF-MIB::ifSpeed. But this counter is 32bit and it
has
maximum capacity 4295.0 Mbits/s, which is not enough for 10Gbps
interfaces.
I look for 64bit variant of this OID.
I can't specify MAX speed manually, because I use autogenerated
configs
with cfgmaker.

Best regards,

Pavel Ruzicka

> 64bit counters do exist on most routers. To use them within MRTG you
have
> to add :::::2 behind the IP-adress. See
> http://people.ee.ethz.ch/~oetiker/webtools/mrtg/cfgmaker.html and

> We have Cisco router with 10Gbps interface and we have
> wrong MAX SPEED 4295.0 Mbits/s.
> I discovered, that this is probably overflowed 32bit counter:
> IF-MIB::ifSpeed.19 = Gauge32: 4294967295

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