With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
ciscoDlswDirNBTable
cisco Data Link Switching Directory NB Table
1.3.6.1.4.1.9.10.9.1.4.2.2
This table contains locations of NetBIOS names. They could be either verified or not verified, local or remote, and configured locally or learned from either Capabilities Exchange messages or directory searches.
Back to CISCO-DLSW-MIB MIB page.
IPHost Network monitor allows you to monitor ciscoDlswDirNBTable on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco multiplexers right now.