Free Preparation Discussions
MENU
Juniper JN0-363 Exam - Topic 7 Question 62 Discussion
Topic #: 7
Which two statements are correct about IS-IS? (Choose two.)
A Level 1 router can become adjacent with the Level 1 and Level 1-2 (L1/L2) router. A Level 2 router can become adjacent with Level 2 or Level 1-2 (L1/L2) router. There is no adjacency between L1 only and L2 only router. HOWEVER: If two routers are in different areas, they can only form a Level 2 adjacency. As such, two routers in different areas can NOT form a Level 1 adjacency. If you want two routers to form a Level 1 adjacency, they have to be in the same area.
IS-IS (Intermediate System to Intermediate System) operates at two levels: Level 1 and Level 2. Level 1 routers are only aware of their own area's topology, while Level 2 routers have knowledge of the topology across areas. A Level 1 router cannot form an adjacency with a Level 2 router unless the Level 2 router is also operating as a Level 1 router (Level 1-2 router). Level 2 routers can form adjacencies regardless of their area IDs because Level 2 operates at the domain level and is used to interconnect different IS-IS areas.
Juniper Networks Technical Documentation on IS-IS
IS-IS Levels and Areas Explanation - Juniper Networks
Lore
3 months agoMickie
3 months agoSkye
4 months agoMelodie
4 months agoTonette
4 months agoTijuana
5 months agoWhitley
5 months agoRolf
5 months agoErick
5 months agoFausto
5 months agoLoreta
5 months agoRemedios
6 months agoMacy
6 months agoShanice
6 months agoCarey
6 months agoGlory
6 months agoEmmanuel
6 months agoThora
7 months agoDeeanna
7 months agoCaprice
7 months agoElenora
7 months agoYoko
7 months agoBrock
8 months agoJospeh
8 months agoAmie
2 months agoLucina
3 months agoCherry
3 months agoTijuana
3 months agoLamonica
3 months ago