With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
ciscoDlswVersion
cisco Data Link Switching Version
1.3.6.1.4.1.9.10.9.1.1.1
This value identifies the particular version of the DLSw standard supported by this DLSw. The first octet is a hexadecimal value representing the DLSw standard Version number of this DLSw, and the second is a hexadecimal value representing the DLSw standard Release number. This information is reported in DLSw Capabilities Exchange.
Back to CISCO-DLSW-MIB MIB page.
IPHost Network monitor allows you to monitor ciscoDlswVersion 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.