With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
Cisco Channel Interface Processor Transmission Groups Llc Admin RMAC
The remote MAC address that this LLC TG uses to establish the LLC connection with the remote network node. This is the MAC address of the remote network node device. If this object is not specified, it will default to the MAC Address specified by the cipTgLlcAdminLanType and cipTgLlcAdminAdaptNo objects.
Back to CISCO-CIPTG-MIB MIB page.
IPHost Network monitor allows you to monitor cipTgLlcAdminRMAC 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.