To collect SNMP traps you'll need an SNMP trap collector. Some devices can send syslog messages, but the 450 isn't one of them.
I'm not sure if Solar Winds has a trap collector piece, if that's your management package of choice you'll want to look into its options first. Generally the hardest part of trap collection is decoding the meaning of the SNMP OIDs because unlike plain-text syslog messages many of the details in an SNMP message are encoded. To decode the SNMP OIDs you (or better yet your software) will need to filter them through SNMP MIB files, which can be found on Nortel's web site.
I use and like Net-SNMP for these kinds of things, it can be found at net-snmp.org You'll basically just want to install their package, add Nortel's MIBs to the MIB directory, and then start their snmptrapd program,
probably with the parameters "-m all -Lo" to use all available MIBS and simply print out traps as they come. Then add the system's IP address to the trap destination list on your 450s and see that the traps are being received correctly. Later you can add a Perl scripts to filter traps, take actions based on the trap contents, or what ever fun stuff you want.
