22
Predefined user roles
network-admin
Usage guidelines
LACP MAD handles collisions differently than ARP MAD and ND MAD. To avoid conflicts, do not
enable LACP MAD together with ARP MAD and ND MAD on an IRF fabric.
LACP MAD requires an H3C device that supports extended LACPDUs to act as the intermediate
device. 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.
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
mad exclude interface
Use
mad exclude interface
to exclude an interface from being shut down when the IRF fabric
transits to the Recovery state upon detection of a multi-active collision.
Use
undo mad exclude interface
to configure the IRF fabric to shut down an interface when
it transits to the Recovery state upon detection of a multi-active collision.
Syntax
mad exclude interface interface-type interface-number
