[mrtg] Re: MRTG & Cisco 2900XL switch

[Keith E Johnson]

You have bits and bytes mixed up.

12.5 mbytes = 100 mbits

-----Original Message-----
From: Andy Brown [mailto:andy.brown at interv8.co.uk]
Sent: Monday, February 18, 2002 9:31 AM
To: mrtg at list.ee.ethz.ch
Subject: [mrtg] MRTG & Cisco 2900XL switch



Hi All,

I'm sure many of you have seen this problem before, but after searching
Google and trying to contact Cisco directly (They don't want to know
since I don't have a support contract) I thought I'd try you guys.

The problem is that I'm getting unusual SNMP data back from my catalyst
2900XL switch, even though I have just applied the very latest ISO from
Cisco dated last week (14th Feb 2002)
The graphs MRTG is putting out are at:
http://voyager.linuxdomain.co.uk/docs/mrtg/193.195.161.3_2.html
And
http://voyager.linuxdomain.co.uk/docs/mrtg/193.195.161.3_3.html

Which as you can see currently say I'm doing 124.4 MB/s traffic!!!!
The mrtg.cfg has in it:
Target[193.195.161.3_2]: 1:public at 193.195.161.3:
SetEnv[193.195.161.3_2]: MRTG_INT_IP="193.195.161.3"
MRTG_INT_DESCR="FastEthernet0/1"
MaxBytes[193.195.161.3_2]: 12500000
Title[193.195.161.3_2]: Traffic Analysis for 2 --
cisco.photohost.co.uk.photohost.co.uk
PageTop[193.195.161.3_2]: <H1>Traffic Analysis for 2 --
cisco.photohost.co.uk.photohost.co.uk</H1>
 <TABLE>
   <TR><TD>System:</TD>     <TD>cisco.photohost.co.uk.photohost.co.uk in
CAI,UK</TD></TR>
   <TR><TD>Maintainer:</TD> <TD>neo at photohost.co.uk</TD></TR>
   <TR><TD>Description:</TD><TD>FastEthernet0/1 Uplink to Demon
</TD></TR>
   <TR><TD>ifType:</TD>     <TD>ethernetCsmacd (6)</TD></TR>
   <TR><TD>ifName:</TD>     <TD>Fa0/1</TD></TR>
   <TR><TD>Max Speed:</TD>  <TD>12.5 MBytes/s</TD></TR>
 </TABLE>

Target[193.195.161.3_3]: 2:public at 193.195.161.3:
SetEnv[193.195.161.3_3]: MRTG_INT_IP="193.195.161.3"
MRTG_INT_DESCR="FastEthernet0/1"
MaxBytes[193.195.161.3_3]: 125000000
Title[193.195.161.3_3]: Traffic Analysis for 3 --
cisco.photohost.co.uk.photohost.co.uk
PageTop[193.195.161.3_3]: <H1>Traffic Analysis for 3 --
cisco.photohost.co.uk.photohost.co.uk</H1>
 <TABLE>
   <TR><TD>System:</TD>     <TD>cisco.photohost.co.uk.photohost.co.uk in
CAI,UK</TD></TR>
   <TR><TD>Maintainer:</TD> <TD>neo at photohost.co.uk</TD></TR>
   <TR><TD>Description:</TD><TD>FastEthernet0/1 Uplink to Demon
</TD></TR>
   <TR><TD>ifType:</TD>     <TD>ethernetCsmacd (6)</TD></TR>
   <TR><TD>ifName:</TD>     <TD>Fa0/1</TD></TR>
   <TR><TD>Max Speed:</TD>  <TD>12.5 MBytes/s</TD></TR>
 </TABLE>


Which all appears correct to me (This was generated from cfgmaker, and
the only strange thing is that it shows max speed on each port at 12.5
Mbytes when they are 100Mbyte ports), please does anyone have any
ideas!!

Regards,

Andy
andy at linuxnetworking.co.uk


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