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SNMP Trap reception - trapd or MLM?

To: nv-l@lists.tivoli.com
Subject: SNMP Trap reception - trapd or MLM?
From: "Danny H Williams" <danny@uk.ibm.com>
Date: Fri, 26 Oct 2001 11:13:04 +0100
Hi All

Another question in the saga of Danny and the MLMs:

Is it better to have an MLM on a NetView server receive SNMP traps, or send
them directly to trapd? Currently I am not planning on filtering the SNMP
traps anywhere but at the source of the trap - i.e. if the trap is sent, I
am interested in it. I have read on the NV-L archives of people using MLMs
to filter traps but this doesn't apply to me.

I have been trying to work out how the MLM communicates with the NetView
server but am failing miserably.

Can I use the MLM to do the local subnet discovery and status polling and
have trapd receive the SNMP traps or does the MLM use SNMP to communicate
with NetView?

One configuration I have considered is to have trapd configured to listen
on 162/udp for the normal traps and 165/tcp to receive stuff from the MLM.
I could configure the MLM to listen on port 162/tcp for anything else that
is floating around (not that there should be - but just in case).

Am I complicating stuff terribly. Have I missed something fundamental. I
have been RTFM'ing but am still confused.

(By the way - the MLMs are to get around a firewall NAT issue until I can
install CNAT)


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