6. Glossary

Segment ; Segment

An instruction that a node will execute on the received packet.

A segment can be a topological instruction such as routing the packet along the shortest path to the router identified by the IP address 192.0.2.1; routing the packet to a specific output interface.

A segment can also be a service instruction to apply processing to the packet.

Segment ID (SID)

A number identifying the segment, which can be specified in the Segment Routing packet header. For SRv6, this is an IPv6 address. For SR-MPLS, it may be a label or an index.

Segment de préfixe (IGP) ; (IGP) Prefix Segment (Prefix-SID)

Segment associated with a prefix (IGP), typically an IPv4 or IPv6 prefix.

Node Segment...