With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
prtDeviceRefSeqNumber
Printer Device Ref Seq Number
1.3.6.1.4.1.11.2.3.9.4.2.2.5.3.1.1
This value will be unique amongst all entries with a common value of hrDeviceIndex. This object allows a device entry to point to the multiple printer devices with which it is associated.
Back to Printer-MIB MIB page.
IPHost Network monitor allows you to monitor prtDeviceRefSeqNumber 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.