With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
dlswSdlcLsRemoteMac
dlsw Sdlc Ls Remote Mac
1.3.6.1.4.1.2011.2.34.6.2.1.5
The MAC address to which DLSw should attempt to connect this link station. If this information is not available, a length of zero for this object should be returned.
Back to DLSW-MIB MIB page.
IPHost Network monitor allows you to monitor dlswSdlcLsRemoteMac 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.