The operator must leverage automated steering and coloring with the design. Which two elements from an SR Policy tuple are used for automated steering inside of the network? (Choose two.)

The correct answer is A. color D. endpoint. An SR Policy is defined by a 3-tuple: (Headend, Color, Endpoint). Automated steering is the mechanism by which BGP-learned prefixes are automatically steered into matching SR policies without requiring per-prefix explicit configuration. It works using two elements: (1) Color - a

MPLS and Segment Routing

Question

Options

Acolor
Bcandidate labels
Cheadend
Dendpoint
ECM paths

How the community answered

(49 responses)

A
92% (45)
B
4% (2)
C
2% (1)
E
2% (1)

Explanation

An SR Policy is defined by a 3-tuple: (Headend, Color, Endpoint). Automated steering is the mechanism by which BGP-learned prefixes are automatically steered into matching SR policies without requiring per-prefix explicit configuration. It works using two elements: (1) Color - a BGP extended community value attached to a route that maps it to a specific SR policy intent (e.g., low-latency, high-bandwidth); and (2) Endpoint - the BGP next-hop of the route, which must match the endpoint of the SR policy. When the color community on a BGP route matches the color of an SR policy and the BGP next-hop matches the SR policy endpoint, traffic is automatically steered into that policy. The Headend (Option C) is the local router initiating the policy and is not used in the steering decision logic. Candidate labels (Option B) and CM paths (Option E) are not standard SR Policy tuple components used in automated steering.

Topics

#Segment Routing#SR Policy#Traffic Steering#Network Coloring

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