With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cipIpDefaultTTL
Cisco Channel Interface Processor Ip Default TTL
1.3.6.1.4.1.9.9.32.1.1.1.1.3
The default value inserted into the Time-To-Live field of the IP header of datagrams originated at this entity, whenever a TTL value is not supplied by the transport layer protocol.
Back to CISCO-CIPTCPIP-MIB MIB page.
IPHost Network monitor allows you to monitor cipIpDefaultTTL on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco wireless switches right now.