[mrtg] SNMPWALK Problem for 1.3.6.1.2.1.1 on cross-compiled mrtg (openwrt mipsbe)

[Brandon Miller]

I'm attempting to cross-compile mrtg for openwrt on a mipsbe processor. 
So far after two days of hacking around with cross compiling libraries 
and linking them properly, I finally got mrtg and its pre-requisites to 
compile. I also got all the required perl modules on the openwrt box. 
I'm finally to the point where I can do cfgmaker and it is timing out. I 
added lots of extra print statements in some of the mrtg .pm files in a 
vain attempt to debug, but so far I can't figure this out:

root at OpenWrt:/usr/share/mrtg/bin# ./cfgmaker --global 'WorkDir: /www/mrtg' \
 > --snmp-options=":::::1" \
 > --output /usr/share/mrtg/cfg/mrtg.cfg \
 > public at 10.255.255.253
SNMP_util.pm line 628
SNMP_util::Version=1
getnext_request_response
request_response_5
req=0'
public?


0
0
+



response_tag=130
oidsi
errorp=1
wait_for_response
wait_for_response
wait_for_response
wait_for_response
wait_for_response
SNMP Error:
no response received
SNMPv1_Session (remote host: "10.255.255.253" [10.255.255.253].161)
community: "public"
request ID: -552632565
PDU bufsize: 8000 bytes
timeout: 2s
retries: 5
backoff: 1)
at /usr/share/mrtg/bin/../lib/mrtg2/SNMP_util.pm line 631
SNMPWALK Problem for 1.3.6.1.2.1.1 on public at 10.255.255.253:::::1:v4only
at ./cfgmaker line 950
WARNING: Skipping public at 10.255.255.253:::::1 as no info could be retrieved



I installed snmp tools and snmpwalk works just fine (doesn't time out):

root at OpenWrt:/usr/share/mrtg/lib/mrtg2# snmpwalk -c public -v 1 
10.255.255.253 1.3.6.1.2.1.1
Cannot find module (SNMP-VIEW-BASED-ACM-MIB): At line 0 in (none)
Cannot find module (SNMP-COMMUNITY-MIB): At line 0 in (none)
Cannot find module (SNMP-FRAMEWORK-MIB): At line 0 in (none)
Cannot find module (SNMP-MPD-MIB): At line 0 in (none)
Cannot find module (SNMP-USER-BASED-SM-MIB): At line 0 in (none)
Cannot find module (TUNNEL-MIB): At line 0 in (none)
Cannot find module (IPV6-FLOW-LABEL-MIB): At line 0 in (none)
Cannot find module (UCD-DLMOD-MIB): At line 0 in (none)
Cannot find module (IP-MIB): At line 0 in (none)
Cannot find module (IF-MIB): At line 0 in (none)
Cannot find module (TCP-MIB): At line 0 in (none)
Cannot find module (UDP-MIB): At line 0 in (none)
Cannot find module (HOST-RESOURCES-MIB): At line 0 in (none)
Cannot find module (SNMPv2-MIB): At line 0 in (none)
Cannot find module (SNMPv2-SMI): At line 0 in (none)
Cannot find module (NOTIFICATION-LOG-MIB): At line 0 in (none)
Cannot find module (DISMAN-EVENT-MIB): At line 0 in (none)
Cannot find module (DISMAN-SCHEDULE-MIB): At line 0 in (none)
iso.3.6.1.2.1.1.1.0 = STRING: "router"
iso.3.6.1.2.1.1.2.0 = OID: iso.3.6.1.4.1.14988.1
iso.3.6.1.2.1.1.3.0 = Timeticks: (46821500) 5 days, 10:03:35.00
iso.3.6.1.2.1.1.4.0 = STRING: "test-box"
iso.3.6.1.2.1.1.5.0 = STRING: "wrtName"
iso.3.6.1.2.1.1.6.0 = STRING: "here"
iso.3.6.1.2.1.1.7.0 = INTEGER: 78



Packet sniffing shows that requests are coming across on udp port 161 as 
well, but the perl modules don't seem to be handling the responses at 
all...just reporting a timeout. I've been googling all over the place on 
different boards and on this mailing list, but no posts quite match what 
I'm attempting to do. Ideas anybody?

Many thanks,
Brandon