21
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.
Related commands
irf domain
mad exclude interface
Use
mad exclude interface
to exclude a physical network port 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 restore the default MAD action on a physical network port.
Syntax
mad exclude interface
interface-type interface-number
