>>>>> On Tue, 13 Jun 2006 22:10:05 +0530, <[EMAIL PROTECTED]> said:
santhosh> How ifIndex value of ifTable in net-snmp-5.2.1 (on Linux )
santhosh> is populated?. Form the mibII group implementation, SNMP
santhosh> agent initializes ifTable columns by reading /proc/net/dev
santhosh> file. But how the ifIndex value is initialized? Is it in
santhosh> the same order of data present in /proc/net/dev?
It's based on reading that file as well as noticing when things appear
or disappear from it (and thus, once the agent is running eth0 should
be the same number from that time till it shuts down).
santhosh> Is there a way to fix an ifIndex for particular index (i.e
santhosh> ifIndex.2 should always refer wireless instead of eth0 ) ?
Not currently. We've talked about trying to force a particular
interface to always be at the same number, but unfortunately we don't
do that currently (nor do most other agents as the MIB doesn't require
it).
Good managers can actually do things like create graphs based on a
different index. EG, in Net-Policy (sorry for the shameless plug) you
can create a graph based on ifDescr == eth0 instead of having to do it
solely based on the ifindex.
--
Wes Hardaker
Sparta, Inc.
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