[mrtg] Wrong values in ATM PVC monitoring for Cisco Router
rcc at speedy.net.pe
Mon Dec 17 18:37:12 MET 2001
Hi all :
I am monitoring ATM sub-interfaces in my Cisco 7204 router, IOS 12.1(5)T1. I
got the cfg file from cfgmaker and it seems to be monitoring aal5 intercafe
layer (PVC) according the line I got in the SetEnv variable :
SetEnv[a.b.c.d]: MRTG_INT_DESCR="ATM1/0.3-aal5 layer"
It looked to be fine and I am having the traffic graphics in that PVC.
However, my client has started his monitoring in the equipment that is
connected to the PVC where I am getting the graphs. He is using MRTG too ,
the same version than me ( 2.9.17 ) and the only difference between us is
the type of equipment ( he is using a Nortel Router ), and we got different
values of Current in/Out bits per second in the traffic values.
The matter is that sometimes the difference is big enough ( ~ 2Mbps ) and we
doubt if the values we are getting are correct. Always the values I got in
the Cisco Router is lower than my client is getting in his Norftel Router
( Shasta BSN 5000 ). Of course I've considered that the output traffic in my
Router is the input traffic in my client's router and viceversa.
I think the problem could be in the Cisco SNMP response. I've taken a look
at the documentation and I could not find anything related to this problem
in the Cisco Router.
Any ideas about this problem ?
Thanks in advance
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