Which two statements are correct about segment routing? (Choose two.)

Question

Options

• ASegment routing adjacencies require very little resources to maintain.
• BLabel assignments can be advertised through OSPF updates.
• CThere are no segment routing adjacencies to maintain.
• DLabel assignments can be advertised through LDP updates.

• A
  80% (24)
• C
  7% (2)
• D
  13% (4)

Explanation

Segment routing is a source routing paradigm that allows a source router to define the path that a packet will take through the network by assigning an ordered list of segments--identifiers that specify a forwarding path for the packet through the network. Segment Routing can be implemented over an MPLS architecture or with IPv6 (SRv6). Segment routing does not require a full mesh of adjacencies or state per transit path in the network, which is often the case with conventional MPLS signaling protocols like RSVP-TE. It leverages the existing IGP topology for forwarding without the need to maintain a state for each LSP (Label Switched Path), hence requiring very little resources to maintain. In segment routing, labels (or segments) are distributed via IGP routing protocols like OSPF or IS-IS with extensions to carry segment routing information. These protocols are enhanced with Segment Routing extensions to distribute labels. For example, OSPFv2 is extended with Segment Routing extensions defined in RFC 8665.

No community discussion yet for this question.