IS-IS Domain
An IS-IS domain is a set of rules, administered by the same authority, that all ESs
and ISs must follow to ensure compatibility.There are two types of domains that
require discussion, administrative domain and routing domain.
Administrative Domain
An administrative domain controls the organization of ISs into routing domains as
well as the NSAP and subnetwork addresses that those routing domains use.
Routing Domain
A routing domain is a set of ISs and ESs governed by the following rules:
vAll devices use the same type of routing metric.
vAll devices use the same routing protocol, such as IS-IS.
Using OSI/DECnet V
290 MRS V3.2 Protocol Config Ref Vol2