[mrtg] MRTG Max bits per second

[Lee Todd]

Daniel
I have changed the config and re run cfgmaker with the following
cfgmaker --output=/etc/mrtg/wc1-6000.cfg --global
workdir:/var/www/mrtg/wc1-6000 --ifref=nr --global "options[_]:
growright,bits" --snmp-options=:::::2 xxxxxx at 172.x.x.x

When I run it I get the following errors.  I have tried changing the
--ifref etc to other options and get the same.

SNMPGET Problem for ifInOctets.223 ifOutOctets.223 sysUptime sysName on
xxxxxxxx at 172.x.x.x::::::v4only
 at /usr/bin/mrtg line 2149
SNMP Error:
Received SNMP response with error code
  error status: noSuchName
  index 2 (OID: 1.3.6.1.2.1.2.2.1.16.224)
SNMPv1_Session (remote host: "172.x.x.x" [172.x.x.x].161)
                  community: "xxxxxxx"
                 request ID: 1238502276
                PDU bufsize: 8000 bytes
                    timeout: 2s
                    retries: 5
                    backoff: 1)
 at /usr/bin/../lib/mrtg2/SNMP_util.pm line 490
SNMPGET Problem for ifInOctets.224 ifOutOctets.224 sysUptime sysName on
xxxxxxxx at 172.x.x.x::::::v4only
 at /usr/bin/mrtg line 2149
2009-11-12 15:22:12: ERROR: Target[172.x.x.x_169][_IN_] ' $target->
[141]{$mode} ' did not eval into defined data
2009-11-12 15:22:12: ERROR: Target[172.x.x.x_169][_OUT_] ' $target->
[141]{$mode} ' did not eval into defined data
2009-11-12 15:22:12: ERROR: Target[172.x.x.x_170][_IN_] ' $target->
[142]{$mode} ' did not eval into defined data
2009-11-12 15:22:12: ERROR: Target[172.x.x.x_170][_OUT_] ' $target->
[142]{$mode} ' did not eval into defined data
2009-11-12 15:22:12: ERROR: Target[172.x.x.x_171][_IN_] ' $target->
[143]{$mode} ' did not eval into defined data
2009-11-12 15:22:12: ERROR: Target[172.x.x.x_171][_OUT_] ' $target->
[143]{$mode} ' did not eval into defined data
2009-11-12 15:22:12: ERROR: Target[172.x.x.x0_172][_IN_] ' $target->
[144]{$mode} ' did not eval into defined data


Any ideas?

Thanks


                                                                                                                                               
  From:       Daniel J McDonald <dan.mcdonald at austinenergy.com>                                                                                
                                                                                                                                               
  To:         mrtg at lists.oetiker.ch                                                                                                            
                                                                                                                                               
  Date:       12/11/2009 14:32                                                                                                                 
                                                                                                                                               
  Subject:    Re: [mrtg] MRTG Max bits per second                                                                                              
                                                                                                                                               
  Sent by:    mrtg-bounces at lists.oetiker.ch                                                                                                    
                                                                                                                                               





On Thu, 2009-11-12 at 13:29 +0000, Lee Todd wrote:
> I have mrtg configured with bit,  the graph shows in bits and the max,
avg
> and current are all in bits.  We have a number of systems with gig links
> and even have a 6gig etherchannel into an ibm blade centre.  The max on
any
> graph is 120.  Is this a limit

It is a limit of snmp version 1.  the 32 bit counter rolls over twice in
5 minutes at ~120mb/seconds

>  or a know issue and how do I fix it to show
> the real speed?

switch to snmp version 2c or snmp version 3.  These versions support 64
bit counters, which rollover about 1 four-millionth less frequently,
making those versions entirely appropriate for speeds up to about a
petabit per second.


snmpv2 can be set very simply.  Please read
http://oss.oetiker.ch/mrtg/doc/cfgmaker.en.html for complete
instructions.  snmpv3 is a little more challenging to configure, but
provides cryptographic integrity.  Once you get templates set up for
snmpv3, the operation is pretty straight-forward.



--
Daniel J McDonald, CCIE # 2495, CISSP # 78281, CNX
www.austinenergy.com

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