With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
lineModuleSerialNum
line Module Serial Number
1.3.6.1.4.1.351.110.2.1.11
This object contains Serial number of the line module.
Back to BASIS-GENERIC-MIB MIB page.
IPHost Network monitor allows you to monitor lineModuleSerialNum on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco switches right now.
