mrtg problem with my wireless router

n0fe@r

设备：abovecable 802.11b wlan router (snmp enabled)
soft：mrtg on linux

#/usr/local/mrtg/bin/cfgmaker --global 'WorkDir: /srv/www/htdocs/mrtg' \
--global 'Options[_]: bits,growright' \
--output /home/mrtg/mrtg.cfg \
--ifref=ip \
public@192.168.100.100
报错如下
--base: Get Device Info on public@192.168.100.100:
SNMP Error:
no response received
SNMPv1_Session (remote host: "192.168.100.100" [192.168.100.100].161)
                  community: "public"
                 request ID: -1639234365
                PDU bufsize: 8000 bytes
                    timeout: 2s
                    retries: 5
                    backoff: 1)
at /usr/local/mrtg/bin/../lib/mrtg2/SNMP_util.pm line 570
SNMPWALK Problem for 1.3.6.1.2.1.1 on public@192.168.100.100:
at /usr/local/mrtg/bin/cfgmaker line 709
用另外台win上的solarwinds可以获取到router上的snmp信息，不过好像有些mib不支持，说xxx is not supported。是不是正好这些不支持的导致mrtg不能获取。如何解决？