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CCIE Routing & Switching V5:ISIS Adjacency - L1-L2

8 Views· 20 Aug 2019
ITCOURSES
ITCOURSES
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ISIS has a 2 layer hierarchy
Level-2 (the backbone)
Level-1 (the areas)

IS-IS support three type of router levels
Level-1 (L1) router (intra-area routing)
Level-2 (L2) router (inter-area routing)
Level-1-2 (L1L2) router (intra and inter-area routing)

Manually we can define IS-type.
If not defined Default is level 1/Level 2

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