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Listening on multiple network interfaces
----------------------------------------
Q. I need my receiving entity (CommandResponder or Notification Receiver)
to listen for SNMP messages on multiple network interfaces. How do
I do that with pysnmp?
A. Simply register multiple network transports with your SNMP engine.
Each transport would be bound to an individual local transport
endpoint (for instance, IP address & UDP port pair).
.. code-block:: python
# Security setup would follow
...
# Setup first transport endpoint
config.addSocketTransport(
snmpEngine,
udp.domainName + (1,),
udp.UdpSocketTransport().openServerMode(('127.0.0.1', 162))
)
# Setup second transport endpoint
config.addSocketTransport(
snmpEngine,
udp.domainName + (2,),
udp.UdpSocketTransport().openServerMode(('192.168.1.1', 162))
)
# Receiver callback function implementation and Dispatcher invocation
# would follow
...
Notice extended transport domain specification (udp.domainName) in
the code above. There we register each transport endpoint under distinct
OID, however always within the canonical transport domain OID.
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