[j-nsp] MRTG and ATM interfaces

[Kevin Vuong]

Hi all,

I am pointing MRTG at my first Juniper (M10i running 6.1R2.2) and I was 
wondering if anyone else has had any issues with it.  I am running into a 
problem where my ATM interfaces start to flatline for a few hours then come 
back with normal graph data.  The deltas in the mrtg .log files seem to be 
terribly inflated causing it to be ignored by MRTG's MaxBytes.

i.e. 

Gigabit Interface (this one's working fine)

1085150833      30091877001     14239736165
1085150535      29967336655     14184379972
---------------------------------------------
298 secs        124540346 in    55356193 out

b/s:            417920.624161074        185759.036912752
B/s:            52240.0780201342        23219.879614094

MRTG .log file entry : 1085150833 417921 185759 417921 185759

So the numbers match up there.


ATM interface (not working)

1085151734      814289676       4093188060
1085151434      813643725       4089949443
---------------------------------------------
300 secs        645951 in       3238617 out

b/s:            2153.17 		10795.39
B/s:            269.14625       1349.42375


The MaxBytes is 1496.0 bits/s for this ADSL circuit.  Since this measurement 
exceeds the MaxBytes, MRTG ignores it and takes the previous value instead.  
Here is a mrtg .log for one of the ATM subinterfaces that is flatlining. 

1085151734 814289676 4093188060
1085151734 92 155 92 155
1085151434 92 155 92 155
1085151300 92 155 92 155
1085151000 92 155 92 155
1085150700 92 155 92 155
1085150400 92 155 92 155
1085150100 92 155 92 155
1085149800 92 155 92 155
1085149500 92 155 92 155
1085149200 92 155 92 155
1085148900 92 155 92 155
1085148600 92 155 92 155
1085148300 92 155 92 155
1085148000 92 155 92 155
1085147700 92 155 92 155
1085147400 92 155 92 155
1085147100 92 155 92 155
1085146800 92 155 92 155
1085146500 92 155 92 155
1085146200 92 155 92 155
1085145900 92 155 92 155
1085145600 92 155 92 155
1085145300 92 155 92 155
1085145000 124 127 165 155

InOctets: 1.3.6.1.2.1.2.2.1.10
OutOctets: 1.3.6.1.2.1.2.2.1.16

Thanks,

Kevin