With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
rsvpResvDestPort
rsvp Resv Dest Port
1.3.6.1.2.1.51.1.4.1.8
The UDP or TCP port number used as a destination port for all senders in this session. If the IP protocol in use, specified by rsvpResvProtocol, is 50 (ESP) or 51 (AH), this represents a virtual destination port number. A value of zero indicates that the IP protocol in use does not have ports. This object may not be changed when the value of the RowStatus object is 'active'.
Back to RSVP-MIB MIB page.
IPHost Network monitor allows you to monitor rsvpResvDestPort on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco routers right now.