[Eric Ewanco <Eric.Ewanco@xxxxxxxxxxx>]

I am debugging an SNMP trap problem using tshark (TShark 1.6.6 (SVN Rev Unknown from unknown)) on a Linux platform (OpenSuSE 12.1). (The target platform does not support the wireshark GUI.) OIDs in PDUs are shown in numerical format even though I have MIBs installed in /usr/share/snmp/mibs with a link to that in /usr/local/share/mibs. I tried -V. There doesn't appear to be a tshark verbose or debugging option except for some memory debugging options. I have checked the man page and find nothing on SNMP or MIBs. I tried strace and I found a file /usr/share/wireshark/oid file but when I put the MIB directory there, I get a flex error, and a google search for what this mysterious file means turns up nothing. I can copy and paste the OIDs into an snmptranslate command and it correctly translates them. I tried creating a ~/.wireshark directory with smi_modules and smi_paths ("/usr/share/snmp/mibs"). I did a tshark -G currentprefs to see if there was a relevant preference but there doesn’t seem to be. I have googled this issue but I get way too much chaff to make any progress. I checked unix.stackexchange.com, superuser.com, and stackoverflow.com.

Example invocation:

tshark -R "snmp && ip.dst==<nms_ip>" -i eth0

Running as user "root" and group "root". This could be dangerous.

Capturing on eth0

  4.675952  <agent_ip> -> <nms_ip>  SNMP 115 sNMPv2-Trap 1.3.6.1.2.1.1.3.0 1.3.6.1.6.3.1.1.4.1.0

 

# more .wireshark/preferences

name_resolve: mtC

name_resolve_load_smi_modules: TRUE

snmp.display_oid: TRUE

snmp.desegment: TRUE

snmp.var_in_tree: TRUE

 

I tried without this preferences file as well.

 

How do I get the OIDs to be displayed in symbolic format, e.g. sysUpTimeInstance and snmpTrapOID.0?

 

Thanks for any help!

 

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