Which queuing structure is used on SD-WAN Edge routers?

The correct answer is B. LLQ+WRR. On Cisco vEdge devices and Cisco IOS XE SD-WAN devices, each interface has eight queues, which are numbered 0 to 7. Queue 0 is reserved, and is used for both control traffic and low- latency queuing (LLQ) traffic. For LLQ, any class that is mapped to queue 0 must also be…

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Question

Options

AFIFO
BLLQ+WRR
C1P-4Q-2T
DPriority

How the community answered

(42 responses)

A
2% (1)
B
93% (39)
D
5% (2)

Explanation

On Cisco vEdge devices and Cisco IOS XE SD-WAN devices, each interface has eight queues, which are numbered 0 to 7. Queue 0 is reserved, and is used for both control traffic and low- latency queuing (LLQ) traffic. For LLQ, any class that is mapped to queue 0 must also be configured to use LLQ. Queues 1 to 7 are available for data traffic, and the default scheduling for these seven queues is weighted round-robin (WRR). For these queues, you can define the weighting according to the needs of your network. When QoS is not configured for data traffic, queue 2 is the default queue. book/forwarding-qos.html

Topics

#SD-WAN QoS#Queuing Mechanisms#LLQ+WRR

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