What Is a characteristic of a segment routing mapping server?

Question

Options

• AIt must be placed in the core of the network.
• BIt serves multiple VRFs.
• CIt must have an IGP adjacency.
• DIt applies SID mappings from one IGP instance to another IGP instance.

• A
  6% (3)
• B
  4% (2)
• C
  87% (41)
• D
  2% (1)

Explanation

A Segment Routing Mapping Server (SRMS) is a node that advertises SID (Segment Identifier) mappings on behalf of non-SR-capable nodes in the network, enabling SR interoperability in hybrid environments. To distribute these SID mappings throughout the network, the SRMS must participate in the IGP (OSPF or IS-IS) and requires an active IGP adjacency with at least one other router. Without IGP adjacency, it cannot flood SID mapping TLVs to the rest of the network. Option A is false - the SRMS can be placed anywhere in the topology, not necessarily the core. Option B is false - the SRMS is not inherently multi-VRF aware; it operates at the IGP/underlay level. Option D is incorrect - the SRMS maps prefix-SID bindings within a single IGP instance, not between different IGP instances (that would be a redistribution or ASBR function).

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