[mrtg] Re: Linux Aliased Ethernet Traffic Graphing

Greg.Volk at edwardjones.com Greg.Volk at edwardjones.com
Mon Aug 19 15:00:05 MEST 2002

}I am attempting to log separately (if at all) transfer usage on a
}per-aliased basis.  That is, eth0, eth0:1, eth0:2, eth0:3, 
}etc.  I seem to
}be able to log eth0 without a problem, my concern is that this 
}is not also
}logging the aliased links (up to eth0:8).
}If it is, is there a way to also split them on a per-alias graph basis

I can't say I've tried to chart aliased interfaces on a linux box,
but I think it should work. Try the following:
snmpwalk localhost <commsting> 

You should see something like:

interfaces.ifTable.ifEntry.ifIndex.1 = 1
interfaces.ifTable.ifEntry.ifIndex.2 = 2
interfaces.ifTable.ifEntry.ifDescr.1 = lo
interfaces.ifTable.ifEntry.ifDescr.2 = eth0
interfaces.ifTable.ifEntry.ifType.1 = softwareLoopback(24)
interfaces.ifTable.ifEntry.ifType.2 = ethernetCsmacd(6)
interfaces.ifTable.ifEntry.ifMtu.1 = 16436
interfaces.ifTable.ifEntry.ifMtu.2 = 1500
interfaces.ifTable.ifEntry.ifSpeed.1 = Gauge32: 10000000
interfaces.ifTable.ifEntry.ifSpeed.2 = Gauge32: 10000000

Where I have interfaces .1 (lo) and .2(eth0) you should see
.1(lo) - .10(eth0:8) or something like that. As long as there is
an entry for each interface, cfgmaker should pick them up. 
If you don't see that you may need to take a look at your 
snmpd.conf file - it might need to be modified, I'm not sure 
tho, I haven't tried polling alias'ed interfaces.

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