With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
sdlcPortStatsActivityTOs
sdlc Port Stats Activity T Os
1.3.6.1.2.1.41.1.1.3.1.15
This object reflects the total number of times that the SDLC link stations on this port have deactivated the link as a result of no activity on the link. This object is initialized to zero when the port is created.
Back to SNA-SDLC-MIB MIB page.
IPHost Network monitor allows you to monitor sdlcPortStatsActivityTOs on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco firewalls right now.