Interior Gateway Protocol (IGP) Parameters
2017-12-18
2018-11-15
IGP Algorithm Types
Standards Action
0
Shortest Path First (SPF) algorithm based on link metric. This
is the standard shortest path algorithm as computed by the IGP
protocol. Consistent with the deployed practice for link-state
protocols, Algorithm 0 permits any node to overwrite the SPF path
with a different path based on its local policy.
1
Strict Shortest Path First (SPF) algorithm based on link
metric. The algorithm is identical to Algorithm 0 but Algorithm 1
requires that all nodes along the path will honor the SPF routing
decision. Local policy at the node claiming support for Algorithm
1 MUST NOT alter the SPF paths computed by Algorithm 1.
2-127
Unassigned
128-255
Flexible Algorithms (TEMPORARY - registered 2018-06-06, expires 2019-06-06)
IGP MSD-Types
Expert Review
Uma Chunduri, Jeff Tantsura
0
Reserved
1
Base MPLS Imposition MSD
2-250
Unassigned
251-254
Experimental Use
255
Reserved