Trap adapter not processing or receiving some traps in Smarts or the formats are incorrect from Varbind

Products

• VMware

Issue/Introduction

Symptoms:




Traps received by Trap Exploder containing varbinds are not properly formatted.
After applying a SmartPack or Rolling Patch for SAM, I'm not receiving any traps from my Trap Adapter

Unable to process multiple varbind traps when generated by sm_snmp in Smarts

Trap adapter not processing or receiving some traps in Smarts
 

When generating traps with the below command, sm_trapd trap receiver will not process traps that contains any varbind.

 

./sm_snmp -d <trap receiver> -p <SNMP port> trap <IP address of device sending trap>

 

./sm_snmp -d 128.222.217.38 -p 162 trap 10.9.1.1 .1.3.6.1.4.1.9.1.17 1 0 0 .1.3.6.1.6.3.3.2.1.1.1.11.1.3.6.1.4.1.9.11.1.1.5 i 300

Environment

VMware Smart Assurance - SMARTS

Cause

This is most likely due to a fix that was included in 6.2 SP3 RP12 and 6.5 SP1 RP38 (and subsequent RP's and SP's) which requires that the --ascii flag be removed from the service starup command for the Trap Adapter.

Resolution

As of 6.5 SmartPack 2 and beyond, "--ascii" should no longer be used during service install or manuall startup for sm_trapd.   Resolution is to manually re-install the service for the SNMP trap adapter without the --ascii option.  Use the sm_service install command with the --force option to overwrite the existing service and do not specify the --ascii parameter in it.

Example:
/opt/InCharge6/SAM/smarts/bin/sm_service install --force
--startmode=runonce
--description="SMARTS SNMP Trap Adapter" ic-trapd-receiver
/opt/InCharge6/SAM/smarts/bin/sm_trapd
--name=TRAP-INCHARGE-OI
--server=INCHARGE-OI
--config=icoi
--port=162
--model=sm_actions
--output
--rules=icoi-trapd/trap_mgr_parse.asl