With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
rsvpResvFwdRSpecSlack
rsvp Resv Fwd R Spec Slack
1.3.6.1.2.1.51.1.5.1.20
If the requested service is Guaranteed, as specified by rsvpResvService, this is the delay slack. Otherwise, it is zero, or the agent may return noSuchValue.
Back to RSVP-MIB MIB page.
IPHost Network monitor allows you to monitor rsvpResvFwdRSpecSlack on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco firewalls right now.