mad enable

Use mad enable to enable LACP MAD.

Use undo mad enable to disable LACP MAD.

Syntax

mad enable

undo mad enable

Default

LACP MAD is disabled.

Views

Aggregate interface view

Predefined user roles

network-admin

Usage guidelines

LACP MAD uses extended LACP packets to detect multi-active collisions. This MAD mechanism requires an intermediate device that supports extended LACP packets.

LACP MAD handles collisions differently than BFD MAD, ARP MAD, and ND MAD. To avoid conflicts, do not enable LACP MAD together with any of those mechanisms in an IRF fabric. However, you can use BFD MAD, ARP MAD, and ND MAD together.

You must set up a dynamic link aggregation group that spans all IRF member devices between the IRF fabric and the intermediate device. To enable dynamic link aggregation, configure the link-aggregation mode dynamic command on the aggregate interface.

If one IRF fabric uses another IRF fabric as the intermediate device for LACP MAD, you must assign the two IRF fabrics different domain IDs for correct split detection. False detection causes IRF split.

When you use the mad enable command, the system prompts you to enter a domain ID. If you do not want to change the current domain ID, press enter at the prompt.

	NOTE: An IRF fabric has only one IRF domain ID. You can change the IRF domain ID by using the following commands: irf domain, mad enable, mad arp enable, or mad nd enable. The IRF domain IDs configured by using these commands overwrite each other.

Examples

# Enable LACP MAD on Bridge-Aggregation 1, a Layer 2 dynamic aggregate interface.

<Sysname> system-view
[Sysname] interface bridge-aggregation 1
[Sysname-Bridge-Aggregation1] link-aggregation mode dynamic
[Sysname-Bridge-Aggregation1] mad enable
 You need to assign a domain ID (range: 0-4294967295)
 [Current domain is: 0]: 1
 The assigned  domain ID is: 1
 MAD LACP only enable on dynamic aggregation interface.

# Enable LACP MAD on Route-Aggregation 1, a Layer 3 dynamic aggregate interface.

<Sysname> system-view
[Sysname] interface route-aggregation 1
[Sysname-Route-Aggregation1] link-aggregation mode dynamic
[Sysname-Route-Aggregation1] mad enable
 You need to assign a domain ID (range: 0-4294967295)
 [Current domain is: 0]: 1
 The assigned  domain ID is: 1
 MAD LACP only enable on dynamic aggregation interface.

Related commands

irf domain