[mrtg] Problem with SNMP?

[Jaroslav.Fikker at cuzk.cz]

Hello.

I have installed MRTG from mrtg-2.9.17-1.rh7.i386.rpm package on RedHat
Linux 7.1. I try to run mrtg with this config file:
WorkDir: /var/www/html/mrtg
Target[r1]: 2:public at 10.52.4.221
MaxBytes[r1]: 1250000
Title[r1]: Traffic Analysis
PageTop[r1]: <H1>Stats for our Ethernet</H1>

and I get this error messages:
SNMP Error:
no response received
SNMPv1_Session (remote host: "10.52.4.221" [10.52.4.221].161)
                  community: "public"
                 request ID: 1790715873
                PDU bufsize: 8000 bytes
                    timeout: 2s
                    retries: 5
                    backoff: 1)
 at /usr/bin/../lib/mrtg2/SNMP_util.pm line 450
SNMPGET Problem for ifInOctets.2 ifOutOctets.2 sysUptime sysName on
public at 10.52.4.221
 at /usr/bin/mrtg line 1491
WARNING: Expected a number but got ''
WARNING: Expected a number but got ''

When I look at r1.html file all graph are empty. Where is problem? With
SNMP?
Thank you very much for your answer.

J. Fikker

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