Can't generate network traffic using MRTG

[yujilaw02962]

Hi,currently i wanna use MRTG to generate the simple network usage graph on my Cisco 7204 ATM interface.

But when i follow the instruction given,it show:

SNMPWALK Problem for 1.3.6.1.2.1.1 on L14SW1@10.75.23.140::::::v4only

I wonder if there is any infomation mission from configuration on my router?

[drolemc]

Multi Router Traffic Grapher (MRTG) is a free performance management application for Unix; it monitors SNMP statistics from any SNMP-capable device on your network and:

• Captures, stores, and graphically presents SNMP data. By default, a web page with four graphs per MIB object (OID) is created by MRTG. The graphs show the variation of MIB data over time.

• Runs from the crontab. Every five minutes, a cron job runs MRTG to query a user-configured list of OIDs and network devices. After each data collection cycle, the MRTG perl script posts updated graphs to a web page.

• Efficiently compresses and archives data samples to create graphs.

For further information click this link.

http://www.cisco.com/en/US/docs/ios/internetwrk_solutions_guides/splob/guides/dial/dial_nms/mrtg.html