Implementing and Operating Cisco Enterprise Network Core Technologies (ENCOR) v1.2InfrastructureHard
A network engineer is deploying a new service that requires precise, deterministic measurement of end-to-end delay and jitter between two Cisco routers. The measurements need to be active, synthetic, and scheduled to run periodically to monitor the service level agreement (SLA). Which network service should the engineer configure on the routers to achieve these active performance measurements?
- ANetFlow
- BSNMP Traps
- CIP SLA
- DRemote SPAN (RSPAN)
Show answer & explanationAnswer & explanation
Correct answer: C. IP SLA
IP SLA (IP Service Level Agreement) is a Cisco IOS feature that allows for active monitoring of network performance by generating and analyzing synthetic traffic. It can measure various metrics, including end-to-end delay, jitter, and packet loss, crucial for verifying SLAs and troubleshooting performance issues.
Why the other options are wrong
- A. NetFlow collects passive flow data (who, what, where) but does not actively generate synthetic traffic or measure performance metrics like jitter.
- B. SNMP Traps are unsolicited notifications sent by devices about significant events, not a mechanism for active, scheduled performance measurement.
- D. RSPAN (Remote SPAN) mirrors traffic from one port to another across multiple switches for analysis, not for active performance measurement.
IP SLA (IP Service Level Agreement)
A Cisco IOS feature that provides active monitoring of network performance by generating and analyzing traffic to measure metrics like jitter, latency, and packet loss.
- Generates synthetic traffic (active measurement).
- Measures end-to-end delay, jitter, packet loss.
- Configurable operations (e.g., UDP Jitter, ICMP Echo).
- Can trigger events or track service levels.
Memory trick: IP SLA is the network's personal trainer, actively testing its speed and agility.