300-320 · Question #11
Which Cisco feature can be run on a Cisco router that terminates a WAN connection, to gather and provide WAN circuit information that helps switchover to dynamically back up the WAN circuit?
The correct answer is B. IP SLA. Cisco IP SLA (Service Level Agreement) is an active monitoring feature that continuously measures network performance metrics such as latency, jitter, and packet loss on WAN circuits. When IP SLA detects that a primary WAN circuit has degraded or failed (based on configurable…
Question
Which Cisco feature can be run on a Cisco router that terminates a WAN connection, to gather and provide WAN circuit information that helps switchover to dynamically back up the WAN circuit?
Options
- ACisco Express Forwarding
- BIP SLA
- Cpassive interface
- Dtraffic shaping
How the community answered
(37 responses)- B92% (34)
- C5% (2)
- D3% (1)
Explanation
Cisco IP SLA (Service Level Agreement) is an active monitoring feature that continuously measures network performance metrics such as latency, jitter, and packet loss on WAN circuits. When IP SLA detects that a primary WAN circuit has degraded or failed (based on configurable thresholds), it can trigger object tracking, which in turn drives routing changes-such as floating static routes or dynamic protocol adjustments-to automatically failover to a backup WAN circuit. CEF (A) is a forwarding mechanism, not a monitoring tool. Passive interface (C) suppresses routing updates on an interface. Traffic shaping (D) controls bandwidth usage but does not monitor circuit health.
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