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Restrictions and guidelines
Management Ethernet
ports for ND MAD
Connect a management Ethernet port on each member device to the
common Ethernet ports on the intermediate device. To avoid ND MAD failure
caused by an active/standby MPU switchover, connect the management
Ethernet port on each MPU to the intermediate device.
ND MAD VLAN
On the intermediate device, create a VLAN for ND MAD, and assign the ports
used for ND MAD to the VLAN. On the IRF fabric, you do not need to assign
the management Ethernet ports to the VLAN.
ND MAD and feature
configuration
• Enable the IRF fabric to change its bridge MAC address as soon as the
address owner leaves.
• If the intermediate device is also an IRF fabric, assign the two IRF fabrics
different domain IDs for correct split detection.
When you use the mad nd 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 ND MAD on VLAN-interface 3.
<Sysname> system-view
[Sysname] interface vlan-interface 3
[Sysname-Vlan-interface3] mad nd enable
You need to assign a domain ID (range: 0-4294967295)
[Current domain ID is: 0]: 1
The assigned domain ID is: 1
Related commands
irf domain
mad restore
Use mad restore to restore the normal MAD state of the IRF fabric in Recovery state.
Syntax
mad restore
Views
System view
Predefined user roles
network-admin
Usage guidelines
If the active IRF fabric has failed to work before the IRF split problem is fixed, use this command to
restore an IRF fabric in Recovery state. The recovered IRF fabric will take over the active IRF fabric
role.
Examples
# Restore the normal MAD state of the IRF fabric in Recovery state.
<Sysname> system-view
[Sysname] mad restore
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