Re: Subagents lose connection to master if no reply from inform destination

I ran snmpd with logging and  -Dagentx. Here is the error message I am seeing:

agentx_build: packet built okay
agentx/master: FAILED 32 -12 Failure in sendto (Broken pipe)
agentx/master: handle pdu (req=0x49d28177,trans=0x0,sess=0xd)
agentx/master: in register_agentx_list
agentx/master: registered ok
agentx/master: send response, stat 0 (req=0x49d28177,trans=0x0,sess=0xd)
agentx_build: packet built okay
agentx/master: handle pdu (req=0x49d28177,trans=0x0,sess=0xd)
agentx/master: in register_agentx_list
netsnmp_assert !"registration != duplicate" failed
/tmp/gate/src/packages/net-snmp/agent/agent_registry.c:542
netsnmp_subtree_load()

This repeat several times. When all trap destinations are reachable,
this error message does not occur.

John

On Wed, Jun 17, 2009 at 11:37 AM, John Forsyth<[email protected]> wrote:
> I am running into an issue where several subagents lose their AgentX
> connection to snmpd master, all giving the following error message:
>
> "AgentX master agent failed to respond to ping.  Attempting to re-register"
>
> This occurs after they successfully connect to snmpd.
>
> I have two v3 inform destinations configured using the trapsess
> derective in snmpd.conf:
>
> trapsess -v 3 -r 2 -t 15 -u <user> -l authNoPriv -A <pass> -a MD5 -Ci
> 10.11.10.18
> trapsess -v 3 -r 2 -t 15 -u <user> -l authNoPriv -A <pass> -a MD5 -Ci
> 10.11.10.19
>
> The second one I eventually discovered, was un-reachable.
>
> When I removed this inform destination. the subagents did not lose
> their connection. Also, if I set the retry & timeouts to 0 for the
> un-reachable inform destination, the subagents do not lose their
> connection.
>
> So, I am left with the conclusion that some how having a "bad" inform
> destination effects the agentx connection between master and
> subagents.
>
> I encounter the same issue whether I configure to use Unix domain
> sockets, or TCP sockets for the AgentX connection.
>
> I realize that having an "un-reachable" trap destination configured is
> not ideal. But, I would like to avoid having this effect the subagents
> if possible.
>
> Any help is greatly appreciated.
>
> System:
> Debian Linux, Net-Snmp 5.4.2
>
> John
>

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