This post should have been made in June. The Managed Switch Port Mapper had back-to-back releases in June to add new capabilities. Together they addressed issues with obtaining MAC addresses from the local area network and a significant problem mapping Cisco switches using SNMPv3. You can download a 30 day trial at http://www.SwitchPortMapper.com/
Changes in the two releases:
2.11 June 13, 2013
-SNMPv3 changes affecting Cisco® switches: corrected problem with context
field that was not being added to the SNMPv3 queries.
-Documented changes to Cisco switch running-config that are required to use
SNMPv3 and get meaningful results.
2.10 June 12, 2013
-Ping Sweep: significant internal changes to address ARP table issue reported
in v2.09. These changes vastly improve collection of ARP information for all
supported operating systems.
-Minor wording changes to Web Browser Summary Report. Added details about
results of Ping Sweep action.
-Review History: it now remembers the last mode (Switch Lists or Manual
Mappings) between successive uses of Review History within a session. If you
were looking at a Switch Mapping, then come back to look at another, you do not
have to reselect the mode again unless you are changing to a different mode.
-Review History: added switch alias column to Manual Switch Mappings view in
the 'Switch Lists or Manual Mappings' list.
-Updated SQLite to version 3.7.17
-Updated MAC address/Manufacturer database.