Configuring ND MAD
When you use ND MAD, follow these guidelines:
Do not configure ND MAD on VLAN-interface 1.
Do not use the VLAN configured for ND MAD for any other purposes.
If an intermediate device is used, you can use common data links as ND MAD links. If no intermediate device is used, set up dedicated ND MAD links between IRF member devices.
If an intermediate device is used, make sure the following requirements are met:
Run the spanning tree feature between the IRF fabric and the intermediate device. Make sure there is only one ND MAD link in forwarding state. For more information about the spanning tree feature and its configuration, see Layer 2—LAN Switching Configuration Guide.
Enable the IRF fabric to change its bridge MAC address as soon as the address owner leaves.
Create an ND MAD VLAN and assign the ports on the ND MAD links to the VLAN.
If the intermediate device is also an IRF fabric, assign the two IRF fabrics different domain IDs for correct split detection.
To configure ND MAD:
Step | Command | Remarks |
|---|---|---|
1. Enter system view. | system-view | N/A |
2. Assign a domain ID to the IRF fabric. | irf domain domain-id | The default IRF domain ID is 0. |
3. Configure the IRF bridge MAC address to change as soon as the address owner leaves. | undo irf mac-address persistent | By default, the IRF bridge MAC address remains unchanged for 6 minutes after the address owner leaves. |
4. Create a VLAN dedicated to ND MAD. | vlan vlan-id | The default VLAN on the device is VLAN 1. |
5. Return to system view. | quit | N/A |
6. Enter Ethernet interface view. | interface interface-type interface-number | N/A |
7. Assign the port to the ND MAD VLAN. |
| The link type of ND MAD ports can be access, trunk, or hybrid. The default link type of a port is access. |
8. Return to system view. | quit | N/A |
9. Enter VLAN interface view. | interface vlan-interface vlan-interface-id | N/A |
10. Assign the interface an IP address. | ipv6 address { ipv6-address/pre-length | ipv6 address pre-length } | By default, no IPv6 addresses are assigned to a VLAN interface. |
11. Enable ND MAD. | mad nd enable | By default, ND MAD is disabled. |