Hi there,
Unbrowse is a SNMP tool. You can use it to look at the MIB database on the device, chart objects (polling), receive traps, manage snmpv3 among other things.
You can get started by viewing these screencasts
unleashnetworks.com/products/unbrowse-snmp.html (scroll to the bottom of the page).
Basically you first select the MIB objects you want to retrieve - if it is a canopy device you can try to get those MIBs and load them into Unbrowse first.
Press Ctrl+M and select the MIBs you want to add.
Next double click the MIB on the right to open it up - select objects from the tree (shift click to select multiple). Next right click and select MIB Walker..
You would be able to figure out the rest if not pls post back here.
Cheers,
Vivek