With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cdeFastS1Mac
Cisco DLSW Fast S1 Mac
1.3.6.1.4.1.9.9.74.1.6.1.1.1
The MAC Address of End Station 1 (S1) used for this cache entry.
Back to CISCO-DLSW-EXT-MIB MIB page.
IPHost Network monitor allows you to monitor cdeFastS1Mac on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco routers right now.