[j-nsp] Interface Index(ifIndex) changes when router is rebooted

[Kaj Niemi]

Hi,


You should be doing a bulkwalk on ifTable/ifXTable or parts of it for performance anyway so why is this a problem? If your performance management software is blindly getting just a specific counter each and every time it's doing it wrong.

There are other ways of getting counters if you do not like snmp.



--
Kaj

Sent from my Nokia N900

----- Original message -----
> I have to agree here - having the monitoring software "rediscover" where
> the
> ifindex for an interface is after a reboot isn't ideal in my
> opinion.....
>
> Paul
>
>
> -----Original Message-----
> From: juniper-nsp-bounces at puck.nether.net<mailto:juniper-nsp-bounces at puck.nether.net>
> [mailto:juniper-nsp-bounces at puck.nether.net] On Behalf Of martin
> Sent: Saturday, August 14, 2010 5:18 AM
> To: Chris Adams; juniper-nsp at puck.nether.net<mailto:juniper-nsp at puck.nether.net>
> Subject: Re: [j-nsp] Interface Index(ifIndex) changes when router is
> rebooted
>
> ok, but what do you mean by fix the software? You don't poll
> interfaces by ifindex number?
>
> 2010/8/14 Chris Adams <cmadams at hiwaay.net<mailto:cmadams at hiwaay.net>>:
> > Once upon a time, martin <m4rtin86 at gmail.com<mailto:m4rtin86 at gmail.com>> said:
> > > As ifindex value has to be persistent in order to use
> > > it for SNMP based monitoring solutions(for example Nagios),
> >
> > Basically, fix the software.  It isn't that hard to do; Cricket (among
> > others) has managed to handle it for 10+ years.  There will always be
> > cases where instance numbers change, so you might as well go ahead and
> > deal with it.
> >
> > For Nagios, I use a plugin wrapper that can walk a specified tree,
> cache
> > the tree, match the desired value, and then call another plugin with
> the
> > instance number.
> > --
> > Chris Adams <cmadams at hiwaay.net<mailto:cmadams at hiwaay.net>>
> > Systems and Network Administrator - HiWAAY Internet Services
> > I don't speak for anybody but myself - that's enough trouble.
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> >
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