[mrtg] problem with referencing targets with description

[Juan Miguel Bocanegra]

Hello all,

As stated in http://ee-staff.ethz.ch/~oetiker/webtools/mrtg/reference.html, one can reference interfaces by description by prepending the IfDescr with a backslash:

Interface by Description
     If you can not use IP addresses you might want to use the interface names. This works similar to the IP address aproach only that the prefix to use is a \
     instead of a / 

     You can tell cfgmaker to generate such references with the option --ifref=descr.

     Example:

      Target[ezwf]: \My-Interface2:public at wellfleet-fddi.ethz.ch
      Target[ezci]: -\My-Interface2:public at ezci-ether.ethz.ch
      Target[ezwf]: 1.3.6.1.2.1.2.2.1.14\My-Interface2&1.3.6.1.2.1.2.2.1.14\My-Interface3:public at myrouter
      Target[ezwf]: ifInErrors\My-Interface2&ifOutErrors\My-Interface3:public at myrouter

     If your description contains a ``&'', a ``@'' or a `` '' you can include them but you must escape with a backlash:

      Target[ezwf]: \fun\: \ ney\&ddd:public at hello.router

Nevertheless I get into problems when I use \Serial4/0/0:public at myrouter as a target:

[juanmi at host ~]$ mrtg mrtg.cfg
Unknown SNMP var ipAdEntIfIndex.Serial40/0   <--- note a slash is missing !
SNMP Error:
Received SNMP response with error code
  error status: noSuchName
  index 1 (OID: 1.3.6.1.2.1.2.2.1.10)
SNMPv1_Session (remote host: "myrouter" [x.y.z.209].161
                  community: "public"
                 request ID: 1026449354
                PDU bufsize: 8000 bytes
                    timeout: 2s
                    retries: 5
                    backoff: 1)
SNMPGET Problem for ifInOctets. ifOutOctets. sysUptime sysName on public at myrouter
SNMPGET: Failed to reach target: "Serial4/0/0:public at myrouter". I tried multiple times!
[juanmi at host ~]$ 

Maybe it is a bug? Has someone find the same behaviour before?
Thanks in advance,
JM
_______________________________________
Juan Miguel Bocanegra <juanmi at satec.es>
SATEC               http://www.satec.es
Marina 16, 9 D  08005 Barcelona (Spain)
Tlf ++34 93 2256920 Fax ++34 93 2251811


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