With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cefAdjMTU
CISCO Express Forwarding Adjacency MTU
1.3.6.1.4.1.9.9.492.1.2.2.1.7
The Layer 3 MTU which can be transmitted using this adjacency.
Back to CISCO-CEF-MIB MIB page.
IPHost Network monitor allows you to monitor cefAdjMTU 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.
