The network-entity command configures the Network Entity Title (NET) for the IS-IS process.
The undo network-entity command cancels the NET for the IS-IS process.
By default, the NET is not set.
| Parameter | Description | Value |
|---|---|---|
| net | Specifies the NET. |
The value is in the X...X.XXXX. XXXX.XXXX.00 format, in which the first "X...X" is the area address, the twelve Xs in the middle is the System ID of the router, and the 00 in the end is NSAP Selector (SEL). |
Usage Scenario
NET is the special form of the Network Service Access Point (NSAP). IS-IS starts only when the NET is configured for the IS-IS process.
Part one is the area ID that is variable (1 to 13 bytes), and the area IDs of the devices in the same area are identical.
Part two is the system ID (6 bytes) of this device, which must be unique in the whole area and backbone area.
Part three is the last byte "SEL", whose value must be "00".
In general, an IS-IS process is configured with only one NET. When you want to redefine an area, to combine it with other areas or divide it into sub-areas for example, you can configure the router with multiple NETs to ensure the correctness of routes.
Prerequisites
An IS-IS process has been enabled and the IS-IS view has been displayed using the isis command.
Precautions
An area ID is used to uniquely identify an area in the same IS-IS domain. All routers in the same Level-1 area must share the same area ID, while routers in the same Level-2 area can have different area IDs.
The system ID must be unique in the whole domain.
A maximum of three area IDs can be configured for an IS-IS process. Therefore, a maximum of three NETs can be configured. When configuring multiple NETs, ensure that they share the same system ID.
# Specify the NET as "10.0001.1010.1020.1030.00", of which the system ID is "1010.1020.1030", area ID is "10.0001".
<sysname> system-view
[sysname] isis 1
[sysname-isis-1] network-entity 10.0001.1010.1020.1030.00
# Specify the area ID as "10.0001" and specify the device to generate the system ID from the lsr-id of MPLS automatically.
<sysname> system-view
[sysname] mpls lsr-id 192.168.1.2
[sysname] isis 1
[sysname-isis-1] network-entity area 10.0001 auto-systemid lsr-id