4
Device
VLAN interface
IP address
VLAN-interface 40
172.24.40.254/24
VLAN-interface 41
172.24.41.254/24
Analysis
For LACP MAD to run correctly, ensure that the intermediate device (SW 1 in this example)
supports extended LACPDUs for LACP MAD.
To avoid single points of failure, use multichassis link aggregations to connect the IRF fabric to the
downstream and upstream devices.
You do not need to run LACP MAD on all link aggregations. You can detect IRF split effectively by
running LACP MAD on one dynamic link aggregation.
Procedures
Setting up the IRF fabric
1.
Configure Device A:
# Assign member ID 1 to Device A.
<DeviceA> system-view
[DeviceA] irf member 1
# Bind Ten-GigabitEthernet 3/0/1 and Ten-GigabitEthernet 3/0/2 to IRF-port 2.
[DeviceA] interface ten-gigabitethernet 3/0/1
[DeviceA-Ten-GigabitEthernet3/0/1] port link-mode bridge
[DeviceA-Ten-GigabitEthernet3/0/1] quit
[DeviceA] interface ten-gigabitethernet 3/0/2
[DeviceA-Ten-GigabitEthernet3/0/2] port link-mode bridge
[DeviceA-Ten-GigabitEthernet3/0/2] quit
[DeviceA] irf-port 2
[DeviceA-irf-port2] port group interface ten-gigabitethernet 3/0/1
[DeviceA-irf-port2] port group interface ten-gigabitethernet 3/0/2
[DeviceA-irf-port2] quit
# Save the running configuration to the main next-startup configuration file before changing
the operating mode to IRF.
IMPORTANT:
IRF mode change requires a system reboot. This step prevents the loss of unsaved settings
upon system reboot.
[DeviceA] save
# Enable IRF mode.
[DeviceA] chassis convert mode irf
The device will switch to IRF mode and reboot.
You are recommended to save the current running configuration and specify the
configuration file for the next startup. Continue? [Y/N]:y
Do you want to convert the content of the next startup configuration file cfa0:/
