With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cefPrefixLen
CISCO Express Forwarding Prefix Length
1.3.6.1.4.1.9.9.492.1.1.2.1.3
Length in bits of the FIB Address prefix.
Back to CISCO-CEF-MIB MIB page.
IPHost Network monitor allows you to monitor cefPrefixLen 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.
