Mad Enable - H3C MSR Series Command Reference Manual

Category
BFD MAD-enabled Layer 3
aggregate interface and
feature compatibility
MAD IP address
Examples
# Enable BFD MAD on Route-Aggregation 3.
<Sysname> system-view
[Sysname] interface route-aggregation 3
[Sysname-Route-Aggregation3] mad bfd enable

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 LACPDUs.
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 irf
domain or mad enable command. The IRF domain IDs configured by using the commands
overwrite each other.
Examples
# Enable LACP MAD on Bridge-Aggregation 1, a Layer 2 dynamic aggregate interface.
Restrictions and guidelines
Do not use the BFD MAD-enabled interface and its member ports for any
purposes other than configuring BFD MAD. Configure only the mad bfd
enable and mad ip address commands on the BFD MAD-enabled interface.
If you configure other features, both BFD MAD and other features on the
interface might run incorrectly.
•
To avoid network issues, only use the mad ip address command to
configure IP addresses on the BFD MAD-enabled interface. Do not
configure an IP address by using the ip address command or configure
a VRRP virtual address on the BFD MAD-enabled interface.
•
Make sure all the MAD IP addresses are on the same subnet.
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