HPE FlexNetwork 10500 series Command Reference Manual page 27

Use undo mad arp enable to disable ARP MAD.
Syntax
mad arp enable
undo mad arp enable
Default
ARP MAD is disabled.
Views
Layer 3 interface view
Predefined user roles
network-admin
mdc-admin
Usage guidelines
ARP MAD detects multi-active collisions by using extended ARP packets.
Do not configure ARP MAD on VLAN-interface 1.
Do not configure ARP MAD together with LACP MAD, because they handle collisions differently.
Do not configure ARP MAD together with BFD MAD if common Ethernet ports are used for BFD
MAD. ARP MAD requires the spanning tree feature, but BFD MAD is exclusive with the spanning
tree feature.
You can set up ARP MAD links between neighbor IRF members or between each IRF member
device and an intermediate device.
If one IRF fabric uses another IRF fabric as the intermediate device for ARP 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 arp 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.
• You can execute the mad arp enable command on any MDCs. If you change the IRF domain ID
in one MDC, the new IRF domain ID takes effect immediately on all MDCs.
Examples
# Enable ARP MAD on VLAN-interface 3.
<Sysname> system-view
[Sysname] interface vlan-interface 3
[Sysname-Vlan-interface3] mad arp enable
You need to assign a domain ID (range: 0-4294967295)
[Current domain is: 0]: 1
The assigned
Related commands
irf domain
domain ID is: 1
23