26
Category
Restrictions and guidelines
ARP MAD VLAN
•
Do not enable ARP MAD on VLAN-interface 1.
•
If you are using an intermediate device, perform the following tasks on
both the IRF fabric and the intermediate device:
Create a VLAN and VLAN interface for ARP MAD.
Assign the ports of ARP MAD links to the ARP MAD VLAN.
•
Do not use the ARP MAD VLAN for any other purposes.
ARP MAD and feature
configuration
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 to ensure that there is only one ARP 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.
•
If the intermediate device is also an IRF fabric, assign the two IRF fabrics
different domain IDs for correct split detection.
To configure ARP 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
ARP 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 ARP
MAD VLAN.
•
Assign the port to the VLAN as
an access port:
port access vlan
vlan-id
•
Assign the port to the VLAN as a
trunk port:
port trunk permit vlan vlan-id
•
Assign the port to the VLAN as a
hybrid port:
port hybrid vlan vlan-id
{
tagged
|
untagged
}
The link type of ARP 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.
Create the VLAN interface
and enter VLAN interface
view.
interface vlan-interface
vlan-interface-id
N/A
10.
Assign the interface an IP
address.
ip address
ip-address
{
mask
|
mask-length
}
By default, no IP addresses are
assigned to any VLAN
interfaces.
11.
Enable ARP MAD.
mad arp enable
By default, ARP MAD is
