SNMP Ports setting for OpManager and Cisco / Dell Equipment

You may disregard my last lengthy email as I think I figured out part of the problem.

By default OpManager uses SNMP Port 161, my cisco equipment uses port 162 for SNMP traps.

Question:

In OpManager which SNMP port number should be set and in which setting?

ie Do I need to change the snmp port number for each individual device in OpManager to use 162, or should I just add a second UDP logging port to point to 161 on my cisco equipment:

example:

snmp-server host <Op-Manager IP> <community string ro> udp-port 162 ???

or do I just modify the snmp settings in OpManager for each individual switch.

That being said I am assuming that I will also need to look into the dell server SNMP port numbers as well??

THanks in Advance in helping with getting this figured out