What separates areas in IS-IS?

The correct answer is D. routers. IS-IS differs from OSPF in the way that "areas" are defined and routed between. IS-IS routers are designated as being: Level 1 (intra-area); Level 2 (inter area); or Level 1-2 (both). Routing information is exchanged between Level 1 routers and other Level 1 routers of the same…

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Options

Alinks
BDIS
Cpseudo nodes
Drouters

How the community answered

(50 responses)

A
12% (6)
B
6% (3)
C
2% (1)
D
80% (40)

Explanation

IS-IS differs from OSPF in the way that "areas" are defined and routed between. IS-IS routers are designated as being: Level 1 (intra-area); Level 2 (inter area); or Level 1-2 (both). Routing information is exchanged between Level 1 routers and other Level 1 routers of the same area, and Level 2 routers can only form relationships and exchange information with other Level 2 routers. Level 1-2 routers exchange information with both levels and are used to connect the inter area routers with the intra area routers.

Topics

#IS-IS#area separation#routing hierarchy#area boundary routers

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