View Level 1 Area Information
Use the following procedure to display Level 1 area information. IS-IS provides support for hierarchical routing, which enables you to partition large routing domains into smaller areas. IS-IS uses a two-level hierarchy, dividing the domain into multiple Level 1 areas and one Level 2 area. The Level 2 area serves as backbone of the domain, connecting to all the Level 1 areas.
Important
The IEEE 802.1aq standard currently only defines the use of one hierarchy, Level 1. Level 2 function is disabled.
Procedure
- In the navigation pane, expand .
- Select IS-IS.
- Select the L1 Area tab.
L1 Area field descriptions
Use the data in the following table to use the L1 Area tab.
|
Name |
Description |
|---|---|
|
AreaAddr |
Specifies an area address reported in a Level 1 link-state packets (LSP) generated or received by this Intermediate System. |