Cisco IOS IP SLAs has a MIB called RTTMON-MIB. Each network performance statistical category spawns IP SLAs MIB variables and corresponding Object Identifiers (OIDs). Using these variables and OIDs, customers can build custom equations to monitor the specific statistic(s) in which they are interested. The most frequently requested calculations include:
1) Jitter
2) Packet Loss Ratio
