ND MAD-enabled IRF configuration example

Network requirements

As shown in Figure 17, set up a four-chassis IRF fabric in the IPv6 enterprise network.

Configure ND MAD in the IRF fabric and use the links connected to Device E for transmitting ND MAD packets.
To prevent loops, run the spanning tree feature between Device E and the IRF fabric.
Figure 17: Network diagram

Configuration procedure

Configure Device A:

# Shut down the physical interfaces used for IRF links. This example uses FortyGigE 1/0/1 to FortyGigE 1/0/4 for IRF links.

<Sysname> system-view
[Sysname] interface range FortyGigE 1/0/1 to FortyGigE 1/0/4
[Sysname-if-range] shutdown
[Sysname-if-range] quit

# Bind FortyGigE 1/0/1 and FortyGigE 1/0/2 to IRF-port 1/1.

[Sysname] irf-port 1/1
[Sysname-irf-port1/1] port group interface FortyGigE 1/0/1
[Sysname-irf-port1/1] port group interface FortyGigE 1/0/2
[Sysname-irf-port1/1] quit

# Bind FortyGigE 1/0/3 and FortyGigE 1/0/4 to IRF-port 1/2.

[Sysname] irf-port 1/2
[Sysname-irf-port1/2] port group interface FortyGigE 1/0/3
[Sysname-irf-port1/2] port group interface FortyGigE 1/0/4
[Sysname-irf-port1/2] quit

# Bring up the QSFP+ ports and save the configuration.

[Sysname] interface range FortyGigE 1/0/1 to FortyGigE 1/0/4
[Sysname-if-range] undo shutdown
[Sysname-if-range] quit
[Sysname] save

# Activate the IRF port configuration.

[Sysname] irf-port-configuration active

Configure Device B:

# Change the member ID of Device B to 2 and reboot the device to validate the change.

<Sysname> system-view
[Sysname] irf member 1 renumber 2
Renumbering the member ID may result in configuration change or loss. Continue? [Y/N]:y
[Sysname] quit
<Sysname> reboot

# Connect Device B to Device A as shown in Figure 17, and log in to Device B. This example uses FortyGigE 2/0/1 to FortyGigE 2/0/4 for IRF links.

# Shut down the physical interfaces.

<Sysname> system-view
[Sysname] interface range FortyGigE 2/0/1 to FortyGigE 2/0/4
[Sysname-if-range] shutdown
[Sysname-if-range] quit

# Bind FortyGigE 2/0/1 and FortyGigE 2/0/2 to IRF-port 2/1.

[Sysname] irf-port 2/1
[Sysname-irf-port2/1] port group interface FortyGigE 2/0/1
[Sysname-irf-port2/1] port group interface FortyGigE 2/0/2
[Sysname-irf-port2/1] quit

# Bind FortyGigE 2/0/3 and FortyGigE 2/0/4 to IRF-port 2/2.

[Sysname] irf-port 2/2
[Sysname-irf-port2/2] port group interface FortyGigE 2/0/3
[Sysname-irf-port2/2] port group interface FortyGigE 2/0/4
[Sysname-irf-port2/2] quit

# Bring up the QSFP+ ports and save the configuration.

[Sysname] interface range FortyGigE 2/0/1 to FortyGigE 2/0/4
[Sysname-if-range] undo shutdown
[Sysname-if-range] quit
[Sysname] save

# Activate the IRF port configuration.

[Sysname] irf-port-configuration active

The two devices perform master election, and the one that has lost the election reboots to form an IRF fabric with the master.

Configure Device C:

# Change the member ID of Device C to 3 and reboot the device to validate the change.

<Sysname> system-view
[Sysname] irf member 1 renumber 3
Renumbering the member ID may result in configuration change or loss. Continue? [Y/N]:y
[Sysname] quit
<Sysname> reboot

# Connect Device C to Device A as shown in Figure 17, and log in to Device C. This example uses FortyGigE 3/0/1 to FortyGigE 3/0/4 for IRF links.

# Shut down the physical interfaces.

<Sysname> system-view
[Sysname] interface range FortyGigE 3/0/1 to FortyGigE 3/0/4
[Sysname-if-range] shutdown
[Sysname-if-range] quit

# Bind FortyGigE 3/0/1 and FortyGigE 3/0/2 to IRF-port 3/1.

[Sysname] irf-port 3/1
[Sysname-irf-port3/1] port group interface FortyGigE 3/0/1
[Sysname-irf-port3/1] port group interface FortyGigE 3/0/2
[Sysname-irf-port3/1] quit

# Bind FortyGigE 3/0/3 and FortyGigE 3/0/4 to IRF-port 3/2.

[Sysname] irf-port 3/2
[Sysname-irf-port3/2] port group interface FortyGigE 3/0/3
[Sysname-irf-port3/2] port group interface FortyGigE 3/0/4
[Sysname-irf-port3/2] quit

# Bring up the QSFP+ ports and save the configuration.

[Sysname] interface range FortyGigE 3/0/1 to FortyGigE 3/0/4
[Sysname-if-range] undo shutdown
[Sysname-if-range] quit
[Sysname] save

# Activate the IRF port configuration.

[Sysname] irf-port-configuration active

Device C reboots to join the IRF fabric.

Configure Device D:

# Change the member ID of Device D to 4 and reboot the device to validate the change.

<Sysname> system-view
[Sysname] irf member 1 renumber 4
Renumbering the member ID may result in configuration change or loss. Continue? [Y/N]:y
[Sysname] quit
<Sysname> reboot

# Connect Device D to Device B and Device C as shown in Figure 17, and log in to Device D. This example uses FortyGigE 4/0/1 to FortyGigE 4/0/4 for IRF links.

# Shut down the physical interfaces.

<Sysname> system-view
[Sysname] interface range FortyGigE 4/0/1 to FortyGigE 4/0/4
[Sysname-if-range] shutdown
[Sysname-if-range] quit

# Bind FortyGigE 4/0/1 and FortyGigE 4/0/2 to IRF-port 4/1.

[Sysname] irf-port 4/1
[Sysname-irf-port4/1] port group interface FortyGigE 4/0/1
[Sysname-irf-port4/1] port group interface FortyGigE 4/0/2
[Sysname-irf-port4/1] quit

# Bind FortyGigE 4/0/3 and FortyGigE 4/0/4 to IRF-port 4/2.

[Sysname] irf-port 4/2
[Sysname-irf-port4/2] port group interface FortyGigE 4/0/3
[Sysname-irf-port4/2] port group interface FortyGigE 4/0/4
[Sysname-irf-port4/2] quit

# Bring up the QSFP+ ports and save the configuration.

[Sysname] interface range FortyGigE 4/0/1 to FortyGigE 4/0/4
[Sysname-if-range] undo shutdown
[Sysname-if-range] quit
[Sysname] save

# Activate the IRF port configuration.

[Sysname] irf-port-configuration active

Device D reboots to join the IRF fabric. A four-chassis IRF fabric is formed.

Configure ND MAD on the IRF fabric:

# Enable the spanning tree feature globally. Map the ND MAD VLAN to MSTI 1 in the MST region.

<Sysname> system-view
[Sysname] stp global enable
[Sysname] stp region-configuration
[Sysname-mst-region] region-name ndmad
[Sysname-mst-region] instance 1 vlan 3
[Sysname-mst-region] active region-configuration
[Sysname-mst-region] quit

# Configure the IRF fabric to change its bridge MAC address as soon as the address owner leaves.

[Sysname] undo irf mac-address persistent

# Set the domain ID of the IRF fabric to 1.

[Sysname] irf domain 1

# Create VLAN 3, and add FortyGigE 1/0/5, FortyGigE 2/0/5, FortyGigE 3/0/5, and FortyGigE 4/0/5 to VLAN 3.

[Sysname] vlan 3
[Sysname-vlan3] port FortyGigE 1/0/5 FortyGigE 2/0/5 FortyGigE 3/0/5 FortyGigE 4/0/5
[Sysname-vlan3] quit

# Create VLAN-interface 3, assign it an IPv6 address, and enable ND MAD on the interface.

[Sysname] interface vlan-interface 3
[Sysname-Vlan-interface3] ipv6 address 2001::1 64
[Sysname-Vlan-interface3] mad nd enable
You need to assign a domain ID (range: 0-4294967295)
 [Current domain is: 1]:
 The assigned  domain ID is: 1

Configure Device E as the intermediate device:
CAUTION:
If the intermediate device is also in an IRF fabric, assign the two IRF fabrics different domain IDs for correct split detection. False detection causes IRF split.
# Enable the spanning tree feature globally. Map the ND MAD VLAN to MSTI 1 in the MST region.
```
<DeviceE> system-view
[DeviceE] stp global enable
[DeviceC] stp region-configuration
[DeviceC-mst-region] region-name ndmad
[DeviceC-mst-region] instance 1 vlan 3
[DeviceC-mst-region] active region-configuration
[DeviceC-mst-region] quit
```
# Create VLAN 3, and add ports FortyGigE 1/0/1, FortyGigE 1/0/2, FortyGigE 1/0/3, and FortyGigE 1/0/4 to VLAN 3 for forwarding ND MAD packets.
```
[DeviceE] vlan 3
[DeviceE-vlan3] port FortyGigE 1/0/1 to FortyGigE 1/0/4
[DeviceE-vlan3] quit
```

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