Re: sit0 device and SNMP

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Fernando Gozalo wrote:
b r u ma wrote:

hi,

This is question for Fedora 1, not sure if this is right list, but any
way ...

When I run
$ snmpwalk -v 1 -c public localhost ifDescr

i get this:
IF-MIB::ifDescr.1 = STRING: lo
IF-MIB::ifDescr.2 = STRING: eth0
IF-MIB::ifDescr.3 = STRING: eth1
IF-MIB::ifDescr.4 = STRING: eth2
IF-MIB::ifDescr.5 = STRING: ppp0
IF-MIB::ifDescr.6 = STRING: sit0

but sometimes after reboot, ppp0 and sit0 device change order:
...
IF-MIB::ifDescr.4 = STRING: eth2
IF-MIB::ifDescr.5 = STRING: sit0
IF-MIB::ifDescr.6 = STRING: ppp0

I use SNMP to monitor traffic (MRTG) on ppp0, because of this switching,
I'm sometimes monitoring wrong data...

Strange thing is that I never used sit0 device, also $ifconfig don't
list it, so why is there? How do I remove it, or make it fixed?

regards bruma


I've talked a little with the net-snmp folks and if you look at the
mailinglist of the net-snmp-coders-list they are working on fixing this
ordering.

Don't forget though that adding new devices during the runtime of your
system can lead to these kinds of changes, no matter what.

Read ya, Phil

PS: And yes, i agree, it's very annoying that it does this, but imho
MRTG would just need to be a little more intelligent and one should be
able to specify a device name instead of a index number for monitoring.
So one could argue that it's actually a (design) bug in MRTG.


You can config MRTG to query using the IP configured in the interface
instead of the index of the interface. See MRTG config manual.

Un saludo.
Fernando.


thanks for tip Fernando :)


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