isis suppress-reachability

Function

The isis suppress-reachability command suppresses the advertisement of direct routes on an IS-IS interface in a specified topology.

The undo isis suppress-reachability command restores the default setting.

By default, direct routes on an IS-IS interface are advertised.

Format

isis suppress-reachability [ level-1 | level-1-2 | level-2 ]

undo isis suppress-reachability

Parameters

Parameter	Description	Value
level-1	Indicates that the advertisement of IPv4 addresses is suppressed on Level-1 interfaces. If the level is not specified, the advertisement of IPv6 addresses on Level-1 and Level-2 interfaces is suppressed.	-
level-1-2	Indicates that the advertisement of IPv4 addresses is suppressed on Level-1 and Level-2 interfaces.	-
level-2	Indicates that the advertisement of IPv4 addresses is suppressed on Level-2 interfaces. If the level is not specified, the advertisement of IPv4 addresses is suppressed on Level-1 and Level-2 interfaces.	-

Views

Interface view

Default Level

2: Configuration level

Usage Guidelines

Before running this command on an interface, run the isis enable command on the interface to enable IS-IS.

Example

# Suppress the advertisement of IPv4 addresses on VLANIF100.

<HUAWEI> system-view
[HUAWEI] isis
[HUAWEI-isis-1] network-entity 01.0000.0000.0001.00
[HUAWEI-isis-1] quit
[HUAWEI] interface vlanif 100
[HUAWEI-Vlanif100] isis enable 1
[HUAWEI-Vlanif100] isis suppress-reachability

# Suppress the advertisement of IPv4 addresses on GE0/0/1.

<HUAWEI> system-view
[HUAWEI] isis
[HUAWEI-isis-1] network-entity 01.0000.0000.0001.00
[HUAWEI-isis-1] quit
[HUAWEI] interface gigabitethernet 0/0/1
[HUAWEI-GigabitEthernet0/0/1] undo portswitch
[HUAWEI-GigabitEthernet0/0/1] isis enable 1
[HUAWEI-GigabitEthernet0/0/1] isis suppress-reachability