How can I run AgentX with a different socket address?
There are two sides to an AgentX connection, and they need to agree about which socket address to use. So if you want to use a different socket, you need to configure both parties accordingly.
The socket that the Net-SNMP master agent uses to listen for AgentX
registrations (and send appropriate requests) can be specified using
"snmpd -x tcp:localhost:705 ...."
would start the agent listening on the TCP port 705 for connections
from the local system.
The same effect can also be obtained by adding the line
to the file
This also holds when the Net-SNMP agent is running in
"subagent" mode, to specify the socket to register with (and receive
So a subagent might connect to the master agent above (both running on the same host), using:
"snmpd -X -x tcp:localhost:705 ...."
A subagent running embedded within some other application will typically not understand the same command-line options, so would need to set the same configuration programmatically:
netsnmp_ds_set_string(NETSNMP_DS_APPLICATION_ID, NETSNMP_DS_AGENT_X_SOCKET, "tcp:localhost:705");
With the example subagent code from the Net-SNMP tutorial, this line
would be added immediately before the
The same approach can also be used to listen on a different named socket, using:
agentxsocket /tmp/agentx agentxperms 770 770 myuser mygroup
snmpd -x /tmp/agentx ....
netsnmp_ds_set_string(NETSNMP_DS_APPLICATION_ID, NETSNMP_DS_AGENT_X_SOCKET, "/tmp/agentx");
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- What protocols are supported?
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- How do I remove a MIB from the agent?
- I've installed a new MIB file. Why can't I query it?
- How do I add a MIB to the agent?
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- What is the purpose of 'dlmod'?
- Which extension mechanism should I use?
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- How can I run AgentX with a different socket address?
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- Where are these traps sent to?
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- What about multi-processor systems?
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