Cisco IOS IP SLAs is part of of the Cisco IOS software. It allows users to analyze IP service levels for IP applications and services using active traffic monitoring.
What are Cisco IOS IP SLA measures?
Cisco IOS IP SLAs is an intelligent active agent available on Cisco devices with routing capabilities. Cisco IOS IP SLAs takes advantage of facilities already deployed (the Cisco IOS) and does not require any further hardware deployment (these are software operations). With ENA Cisco IOS IP SLAs you are leveraging your current investment in Cisco devices and
Cisco IOS IP SLAs provides layer three and above monitoring. Its applications include web site monitoring and infrastructure troubleshooting. Metrics include response time, availability, jitter, connect time, packet loss and application performance.
Cisco IOS IP SLAs per-class traffic monitoring, enabled through TOS/DSCP, allows easy application of metrics to key Service Level Agreements (SLA). For example UDP jitter operation measures one-way latency, round-trip latency, jitter and packet loss all useful when monitoring infrastructure circuit quality and behavior.
ENA Cisco IOS IP SLA module:
This is a licensable module available with ENA. Activation does not require additional software installation, but you must acquire an appropriate license and then run ENA configure to include the module.
ENA delivers full support for 10 IP SLA operation types:
- HTTP Raw
- ICMP Echo
- ICMP Path Echo
- TCP Connect
- UDP Echo
- UDP Jitter
- UDP Jitter VoIP
Please see the article How do I add, edit or delete an IP SLA? for more information on each operation type.
IP SLA data management:
IP SLA operations are defined through the UI and are instantiated as part of the ENA discovery cycle. The length of this cycle is usually within 24 hours, but is dependent upon the characteristics fo the network under management.
By default, all IP SLA metrics are polled once every 300 seconds. A historical record of the information is kept, and you can report on the polled values for 28 days.
Command line and automated IP SLA management:
You can manage IP SLA operations from:
- this requires the appropriate permissions within ENA.
- RESTful API.
- this requires access to and appropriate permissions on the Entuity server.
- GET function - view details of existing IP SLA operations on a device.
- PUT function - create IP SLA operations and amend the parameters of existing IP SLA operations.
- DELETE function - delete IP SLA operations on a device for the given IP SLA creator name and type.
- a combination of the UI and RESTful API.
To view IP SLA information:
Navigate to the IP SLAs dashboard to see a list of the Cisco IOS IP SLAs that are configured on the selected device, as well as information about them.
You can report on IP SLA data via the following reports:
- IP SLA Echo report.
- IP SLA Details report.
- Branch Office Perspective report.
- Network Delivery Summary report.
IP SLA incidents and events:
IP SLA events and incidents are managed by the ENA event management system (EMS). All events are generated by polling.
ENA IP SLA incidents are configured through the event project and managed through the event system. You can add annotations, assign incidents to users, close incidents, and investigate incident details.
Incidents and events:
- IP SLA Creation Failure Incident
- IP SLA Low MOS Incident
- IP SLA Problem Incident
- IP SLA Test Failed Incident
- IP SLA Test High Latency Incident