isis silent

Function

The isis silent command configures an IS-IS interface as a silent interface. That is, the interface is suppressed from sending and receiving IS-IS packets, but the routes to the network segment of the interface can be advertised.

The undo isis silent command restores the default configuration.

By default, no IS-IS interface is configured as a silent interface.

Format

isis silent

isis silent advertise-zero-cost

undo isis silent

Parameters

Parameter	Description	Value
advertise-zero-cost	Indicates that the route cost is 0. The default cost of IS-IS routes is 10.	-

Parameter

Description

Value

advertise-zero-cost

Indicates that the route cost is 0. The default cost of IS-IS routes is 10.

Views

100GE interface view, 10GE interface view, 25GE sub-interface view, 25GE interface view, 400GE interface view, 40GE interface view, 50GE sub-interface view, 50GE interface view, Eth-Trunk interface view, FlexE interface view, GE optical interface view, GE electrical interface view, Global VE sub-interface view, VE sub-interface view, VE interface view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
isis	write

Usage Guidelines

Usage Scenario

When an IS-IS network is connected to other ASs, IS-IS must be enabled on the interfaces that connect the IS-IS network to other ASs so that the devices on the IS-IS network can learn the routes to other ASs. The interfaces, however, unnecessarily advertise IS-IS Hello packets on their network segments. In this situation, you can run the isis silent command to suppress the interfaces.

Prerequisites

IS-IS has been enabled using the isis enable command in the interface view.

Example

# Configure GE 0/1/0 as a silent interface.

<HUAWEI> system-view
[~HUAWEI] isis 1
[*HUAWEI-isis-1] quit
[*HUAWEI] interface GigabitEthernet 0/1/0
[*HUAWEI-GigabitEthernet0/1/0] isis enable 1
[*HUAWEI-GigabitEthernet0/1/0] isis silent