H3C S9500E Series Configuration Manual page 51

# Set the domain ID of the IRF fabric to 1.
[Sysname] irf domain 1
# Enable the spanning tree function globally on the IRF fabric to prevent loops.
<Sysname> system-view
[Sysname] stp enable
# Configure that the bridge MAC address of the IRF fabric changes as soon as the master leaves.
[Sysname] undo irf mac-address persistent
Configure ARP MAD
4.
# Create VLAN 3, and add port GigabitEthernet 1/4/0/2 (located on Device A) and port
GigabitEthernet 2/4/0/2(located on Device B) to VLAN 3.
<Sysname> system-view
[Sysname] vlan 3
[Sysname-vlan3] port gigabitethernet 1/4/0/2 gigabitethernet 2/4/0/2
[Sysname-vlan3] quit
# Create VLAN-interface 3, assign it an IP address, and enable ARP MAD on the interface.
[Sysname] interface vlan-interface 3
[Sysname-Vlan-interface3] mad arp enable
You need to assign a domain ID (range: 0-4294967295)
[Current domain is: 1]:
The assigned
[Sysname-Vlan-interface3] ip address 192.168.2.1 24
Configure Device C as the intermediate device
5.
Acting as the intermediate device, Device C forwards and processes gratuitous ARP packets sent
between Device A and Device B for MAD detection.
CAUTION:
If the intermediate device is in an IRF fabric, you must assign this fabric a different domain ID than the ARP
MAD-enabled fabric.
# Enable the spanning tree function globally on Device C to prevent loops.
<DeviceC> system-view
[DeviceC] stp enable
# Create VLAN 3, and add port GigabitEthernet 4/0/1 and port GigabitEthernet 4/0/2 to VLAN 3 to
forward ARP MAD packets.
[DeviceC] vlan 3
[DeviceC-vlan3] port gigabitethernet 4/0/1 gigabitethernet 4/0/2
[DeviceC-vlan3] quit
Switching the operating mode of IRF member switches from IRF
to standalone
Network requirements
As shown in
To adapt the network to changes, switch the operating mode of Device A and Device B from IRF to
standalone.
domain ID is: 1
Figure 18, the IRF fabric operates normally. Device A and Device B are IRF member switches.
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