Extended protection in segment routing flexible algorithm

A method associated with a Segment Routing network that utilizes Flexible Algorithm, the method comprising steps of:

• defining a first Flexible Algorithm that segregates the Segment Routing network into a first subset network that excludes any of links and nodes from the Segment Routing network;
• defining a second Flexible Algorithm that segregates the Segment Routing network into a second subset network, different from the first subset network;
• and
• defining extended protection for the first Flexible Algorithm with the second Flexible Algorithm whereby the second Flexible Algorithm is usable is usable to protect one or more of a path, a node, and a link available in the first Flexible Algorithm.

An apparatus comprising:

• one or more processors;
• and
• memory storing instructions that, when executed, causes the one or processors to
• define a first Flexible Algorithm that segregates the Segment Routing network into a first subset network that excludes any of links and nodes from the Segment Routing network,
• define a second Flexible Algorithm that segregates the Segment Routing network into a second subset network, different from the first subset network, and
• define extended protection for the first Flexible Algorithm with the second Flexible Algorithm whereby the second Flexible Algorithm is usable is usable to protect one or more of a path, a node, and a link available in the first Flexible Algorithm.