300-415 · Question #11
Which configuration changes the packet loss priority from low to high?
The correct answer is B. policy policer ccnp-traffic rate 1000000 burst 20000 plp high. The 'plp high' command directly sets the Packet Loss Priority to high within a policer policy, which is the correct syntax for this configuration.
Question
Options
- Apolicy policer ccnp-traffic rate 1000000 burst 20000 exceed high
- Bpolicy policer ccnp-traffic rate 1000000 burst 20000 plp high
- Cpolicy policer ccnp-traffic rate 1000000 burst 20000 exceed drop
- Dpolicy policer ccnp-traffic rate 1000000 burst 20000 exceed remark
How the community answered
(24 responses)- A4% (1)
- B92% (22)
- D4% (1)
Why each option
The 'plp high' command directly sets the Packet Loss Priority to high within a policer policy, which is the correct syntax for this configuration.
The 'exceed high' keyword is not a valid Cisco policer command - 'exceed' must be followed by an action such as 'drop' or 'remark', not a priority level.
The 'plp high' keyword within a Cisco policer policy block is the correct command to explicitly set the Packet Loss Priority to high. PLP is a QoS attribute that signals downstream devices to preferentially drop marked traffic under congestion. The other keywords like 'exceed' control actions for out-of-profile traffic, not the PLP marking.
The 'exceed drop' command causes out-of-rate packets to be dropped entirely, which does not set a Packet Loss Priority marking on the traffic.
The 'exceed remark' command triggers a remarking action on exceeding traffic but does not configure the Packet Loss Priority to high.
Concept tested: Cisco QoS policer Packet Loss Priority configuration
Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/qos_plcshp/configuration/xe-16/qos-plcshp-xe-16-book/qos-plcshp-oview.html
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