[mrtg] Unexpected results

Brander, Eric Eric.Brander at ACS-INC.com
Tue Nov 19 22:51:46 MET 2002

Ok, my current version of CatOS on my Cisco 2950 does not support 64-bit
counters, so I wanted to create a graph that showed me how often the counter
wrap occurred on a gigabit uplink.  I used gauge so that I get the actual
number of octets reported, not any calculated bits/sec or octets/sec.  Here
is a snip from my config file:

Target[1-TX2-2950_50_test]: ifInOctets.50&ifOutOctets.50:public at a.b.c.d
Directory[1-TX2-2950_50_test]: 1-TX2-2950
Options[1-TX2-2950_50_test]: growright, nobanner, gauge, nolegend, nopercent
UnScaled[1-TX2-2950_50_test]: dwmy
#WithPeak[1-TX2-2950_50_test]: wmy
MaxBytes[1-TX2-2950_50_test]: 5000000000
Colours[1-TX2-2950_50_test]: ORANGE#ff6600,BRIGHTBLUE#0066ff,DARK
Legend1[1-TX2-2950_50_test]: Incoming Traffic in Bits per Second
Legend2[1-TX2-2950_50_test]: Outgoing Traffic in Bits per Second
Legend3[1-TX2-2950_50_test]: Peak 5 Minute Incoming Traffic
Legend4[1-TX2-2950_50_test]: Peak 5 Minute Outgoing Traffic
LegendO[1-TX2-2950_50_test]: Octets Out:&nbsp
LegendI[1-TX2-2950_50_test]: Octets In:&nbsp
ShortLegend[1-TX2-2950_50_test]: &nbsp
Title[1-TX2-2950_50_test]: 1-TX2-2950 -- GigabitEthernet0/2 -- Gauge Wrap
PageTop[1-TX2-2950_50_test]: <H1><font color="#0000FF">GigabitEthernet0/2
   <TR><TD><font color="#800000"><b>System:</b></font></TD><TD><font
   <TR><TD><font color="#800000"><b></b></font></TD><TD><font
color="#800000"><b>TESTING GAUGE WRAP FREQUENCY</b></font></TD></TR>
   <TR><TD>Description:</TD><TD>GigabitEthernet0/2  </TD></TR>
   <TR><TD>Interface Name:</TD><TD>Gi0/2</TD></TR>
   <TR><TD>Interface Type:</TD><TD>ethernetCsmacd (6)</TD></TR>
   <TR><TD>Interface Speed:</TD><TD><font color="#0000FF">125.0

Which produced the attached graph (attachment will be saved as a link on the
bottom of this email).

Why am I seeing flatlines???  This is totally inconsistent with what I
expected to see.  This is the only uplink to the network on a switchport
with around 40 users on it.  Can anyone help me explain these results?


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