Contents

ISDF commands· 1

bind unified-flow-instance· 1

isdf enable· 1

reroute enable· 2

reroute-advertise enable· 3

ISDF commands

bind unified-flow-instance

Use bind unified-flow-instance to bind a UFA instance to ISDF and enter UFA instance view. or enter the view of a bound UFA instance.

Use undo bind unified-flow-instance to unbind between a UFA instance from ISDF.

Syntax

bind unified-flow-instance instance-id

undo bind unified-flow-instance instance-id

Default

No UFA instance is bound to ISDF.

Views

ISDF view

Predefined user roles

network-admin

Parameters

instance-id: Specifies a UFA instance by its ID in the range of 1 to 2048.

Usage guidelines

After you create a UFA instance and enable the ISDF packet loss detection feature, you must execute this command to bind ISDF to the UFA instance for ISDF to take effect.

Examples

# Bind UFA instance 1 to ISDF and enter UFA instance view.

<Sysname> system-view

[Sysname] isdf enable

[Sysname-isdf] bind unified-flow-instance 1

[Sysname-isdf-instance-1]

isdf enable

Use isdf enable to enable ISDF and enter ISDF view, or enter ISDF view.

Use undo isdf enable to disable ISDF.

Syntax

enable

undo isdf enable

Default

ISDF is disabled.

Views

System view

Predefined user roles

network-admin

Usage guidelines

When a network link fails, traditional routing convergence technologies based on the control plane dynamic routing protocols (for example, BGP and OSPF) can achieve convergence times in the hundreds of milliseconds. This cannot meet the stringent network performance requirements of services such as online transactions and autonomous driving. The ISDF technology can solve this problem.

Instant Silent-Fault Detection and Failover (ISDF) is a fully data plane-based fault detection and recovery technology. It represents a technological evolution from reliance on CP protocol interaction for convergence to real-time fault detection and rapid path switchover-based convergence in the DP. By using DP fault detection, remote fault advertisement, and fast-path switchover mechanisms, ISDF achieves millisecond-level network convergence, significantly improving network reliability and data transmission efficiency.

Examples

# Enable ISDF and enter ISDF view.

<Sysname> system-view

[Sysname] isdf enable

[Sysname-isdf]

reroute enable

Use reroute enable to enable ISDF reroute.

Use undo reroute enable to disable ISDF reroute.

Syntax

reroute enable

undo reroute enable

Default

ISDF reroute is disabled.

Views

ISDF view

Predefined user roles

network-admin

Usage guidelines

With this feature enabled, the device will adjust the traffic forwarding path in real time based on the received remote fault advertisement message, automatically mitigate faulty links, and ensure service  recovery within milliseconds.

Examples

# Enable ISDF reroute.

<Sysname> system-view

[Sysname] isdf enable

[Sysname-isdf] reroute enable

reroute-advertise enable

Use reroute-advertise enable to enable fault advertising for ISDF reroute.

Use undo reroute-advertise enable to disable fault advertising for ISDF reroute.

Syntax

reroute-advertise enable

undo reroute-advertise enable

Default

Fault advertising for ISDF reroute is disabled.

Views

Bound UFA instance view

Predefined user roles

network-admin

Usage guidelines

With this feature enabled, the device will send a fault advertisement to the upstream device when it detects a fault. Upon receiving the fault advertisement, the upstream device will perform a traffic forwarding path switchover, enabling rapid fault detection and recovery.

Examples

# Enable fault advertising for ISDF reroute.

<Sysname> system-view

[Sysname] isdf enable

[Sysname-isdf] bind unified-flow-instance 1

[Sysname-isdf-instance-1] reroute-advertise enable