Implementing and Operating Cisco Enterprise Network Core Technologies (ENCOR) v1.2InfrastructureMedium
A network operations team needs to monitor the round-trip time (RTT) and jitter for a critical VoIP application between two branches. They want to use an active monitoring tool built into Cisco IOS devices that simulates application traffic. Which feature should they configure and deploy?
- ANetFlow
- BSNMP
- CIP SLA
- DSPAN
Show answer & explanationAnswer & explanation
Correct answer: C. IP SLA
IP Service Level Agreements (IP SLA) allows Cisco devices to actively generate and monitor traffic to measure network performance metrics like RTT, jitter, and packet loss, simulating real application traffic. This is ideal for proactive monitoring of VoIP application quality.
Why the other options are wrong
- A. NetFlow collects passive flow statistics, not active RTT or jitter measurements.
- B. SNMP is for polling device MIBs for status and statistics, not for active traffic generation and performance measurement.
- D. SPAN mirrors traffic from one port to another for analysis, it does not actively measure network performance metrics.
IP Service Level Agreements (IP SLA)
A Cisco IOS feature that enables network devices to actively generate and analyze traffic to measure network performance metrics such as latency, jitter, packet loss, and availability.
- Simulates application traffic for proactive monitoring.
- Supports various operation types (e.g., UDP jitter, ICMP echo).
- Can trigger events or thresholds for alerts.
Memory trick: IP SLA's Active Link Assurance