IP SLA basics

- [Narrator] Cisco has a somewhat hidden gem…in the IP Service Level Agreement feature.…IP SLA can be used to ping destination and detect failures…in conjunction with many systems like static routes…or PBR to affect traffic flow.…It can also be used for statistical analysis…for things like latency or jitter.…These statistics are made available…via the CISCO-RTTMON-MIB, for collection via SNMP.…IP SLA has two operational modes…for routers, operation or responder.…

Operation creates an IP SLA operation.…This will consist of things like protocol to use,…what will be measured or tested, and how often it will run.…A responder is simply a router that accepts…and replies to the operation.…Common operation types are FTP, DHCP, HTTP, DNS,…RTP, or VoIP traffic, TCP connections,…UDP for jitter and echo, and ICMP for jitter and echo.…

The CCNP test mostly focuses on using IP SLA…with ICMP to ping remote devices.…In this case, nothing special needs to be…configured on the responder,…it just needs to answer a standard ping request.…