[mrtg] Re: sent thousands packets every 5 min

Steve Shipway s.shipway at auckland.ac.nz
Tue Nov 30 22:27:54 MET 2004

>It's sending huge amounts of udp 161 traffic to the
>routers.  I don't know how to fix the problem.  

161/udp is SNMP.  The first time that MRTG runs a cfg file, it will try to
SNMPwalk the interface tree to build up a cache of the interfaces in the .ok
file for later use.  The next time, it should just send a couple of
requests.  If you have a lot of interfaces on your router, you'll get a lot
of traffic -- and if (for some reason) your MRTG cannot write the .ok cache
file, then it will rewalk the router every 5 min run.


Steve Shipway: ITSS, University of Auckland
Email: s.shipway at auckland.ac.nz  Web: http://www.steveshipway.org/  
** We can only discover new oceans when we have the **
** courage to lose sight of the shore.              **

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