With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
parNetParmTopoMsgSegSz
par Net Parm Topo Msg Seg Sz
1.3.6.1.4.1.351.130.5.7.18
This object specifies the maximum size (in bytes) of the segment into which the topology message, sent during network join, is divided.
Back to CISCO-WAN-PAR-MIB MIB page.
IPHost Network monitor allows you to monitor parNetParmTopoMsgSegSz 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.