Indexed segment ID

摘要

An apparatus and method for using indexed segment identifiers in segment routing. An example method involves receiving a globally unique index value at a node. The method also involves receiving a base value at the node, where the base value comprises a segment routing value configured to identify a nodal segment. The method then involves calculating a segment identifier based on the index value and the base value.

主权项

1. A method comprising:
receiving an index value at a node, wherein
the index value is globally unique within a network domain, and receiving a base value at the node, wherein
the base value comprises one of a plurality of segment routing values, andthe plurality of segment routing values comprises a set of segment routing values configured to identify nodal segments; calculating a segment identifier (segment ID) based on the index value and the base value; calculating, based on the index value and a second base value, a next hop segment ID associated with a packet, wherein the second base value comprises one of a second plurality of segment routing values reserved by a next-hop node; and forwarding the packet based on the next hop segment ID.