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- Net-SNMP contains a reasonably full implementation of the AgentX agent
- extensibility protocol (RFC 2741) in as much as it supports all
- the protocol operations described in this document. The core
- functionality has received a reasonable amount of exposure, and
- is believed to be more or less stable in normal use. It will
- also handle the non-graceful termination of subagents - returning
- a 'genErr' error for three successive requests before unregistering
- the unresponsive subagent.
-
- A subagent will attempts to re-establish contact with a dead and
- resurrected master based on the agentxPingInterval setting. The default
- for this configuration variable is 15 seconds. It can be changed by
- putting the following line in your APPLICATION.conf file:
-
- agentxPingInterval 60
-
- will make the subagent try to ping the master every 60 seconds, and if
- the connection is deemed broken it'll try and reconnect to the master
- agent after that point (once every 60 seconds).
-
- Similarly, a subagent will not be able to re-register in place of a
- defunct colleague until the master agent has received three requests
- for the dead connection (and hence unregistered it).
-
- Some of the less frequently used features (index allocation,
- range registration, etc), have received less thorough testing,
- and may well not be fully functional. Some of the omissions
- of the earlier release (use of GetBulk, the AgentX MIB)
- are still missing from this version.
-
- AgentX support is now included in the agent by default, but needs
- to be explicitly enabled before use. Activate it using by putting a line
-
- master agentx
-
- in the snmpd.conf file. This support is also enabled automatically
- when the '-x' flag is given (to specify a different master AgentX socket),
- or when the agent is invoked as an AgentX subagent (i.e. via the name
- 'agentxd' or with the '-X' flag).
-
- See the main project web page for an examples of a simple stand-alone
- subagent. (http://www.net-snmp.org/tutorial/tutorial-5/toolkit/)
-
-
- Please report any problems experienced to the net-snmp-coders list.
-
- Dave
-