I read a post the other day which laid out some of the philosophy of OpenNMS
with respect to discovery.
It seemed to me that there was a clear distinction between address discovery,
which is done via pinging, and node internals discovery which is done via SNMP
and other protocols. The little bit I have worked with the source code seems
to confirm that.
I was wondering if you have had any discussions about modifying this approach.
Ping sweeps are not going to fly when it comes to IPv6 networks. Even in IPv4
networks there are situations (sparse networks) where a crawl is much more
efficient than a ping sweep. By crawl I mean going into a node and poking
around in various MIBs looking for other addresses to discover.
Adopting this approach means that the initial address discovery phase would
include a combination of ping, SNMP credential discovery (any site can have
multiple versions of SNMP in operation with multiple valid credentials) and the
the grouping of addresses by physical node/agent.
Bob Kostes
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