Hi, I am new to Net-SNMP and I have recently come across a problem.
My Agent Setup consists of a Master Agent and a Sub Agent. The Communication between the Master and Subagent is based on the AgentX Protocol via a Unix Domain Socket [SOCK_STREAM] The Master Agent is supposed to handle certain SNMP related requests like SNMPV2 MIB Requests and forward the specific/custom MIB requests to the SubAgent. Issue : The issue is suddenly that the Agents failed to respond to the Manager requests. I was not able to find any meaningful traces on the Sub Agent side. There are no traces after a specific period when the problem started. On hindsight, the problem occurred when a SET Request was done. But the same is successful on other agents and occasionally same problem occurs on other agents. But it is not systematic though. The problem is solved by restarting the agents. On further investigation when i performed a SNMP WALK on the custom MIB OIDs and the SNMPV2 OIDs I got the Timeout: No Response from localhost" >From Wire shark traces I am able to see the V3 requests from the Manager but >since the interaction between the master Agent and subagent is via Unix Domain >Socket I am not able to debug for sure whether the request was sent to the Sub >Agent or not. The only thing that I failed to check, i When I first heard about the problem, I thought of three possibilities here Agent Crash --> Both the Master and SubAgent processes are running fine. Agent Processing time is slow and hence timeout --> Increased the timeout for larger duration but problem persists Agent Hangs or no response --> Any possible hints to debug this ??? Please let me know about known issues / hints that might lead to a clue for this issue. Thanks & Regards, Vinayak
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