25
Category Restrictions
and
guidelines
BFD MAD VLAN
•
Do not enable BFD 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 BFD MAD.
{
Assign the ports of BFD MAD links to the BFD MAD VLAN.
•
Make sure the IRF fabrics on the network use different BFD MAD VLANs.
•
Make sure the BFD MAD VLAN contains only ports on the BFD MAD
links. Exclude a port from the BFD MAD VLAN if the port is not on the
BFD MAD link. For example, if you have assigned the port to all VLANs
by using the
port trunk permit vlan all
command, use the
undo
port trunk permit
command to exclude the port from the BFD MAD
VLAN.
BFD MAD VLAN and
feature compatibility
Do not use the BFD MAD VLAN for any purposes other than configuring BFD
MAD.
•
On the IRF fabric, configure only the
mad bfd enable
and
mad ip
address
commands on the VLAN interface used for BFD MAD. On the
intermediate device (if any) and IRF fabric, do not configure any other
features on the ports used for BFD MAD. If you configure other features,
both BFD MAD and other features on the interface or ports might run
incorrectly.
•
Disable the spanning tree feature on all Layer 2 Ethernet ports in the BFD
MAD VLAN. The MAD feature is mutually exclusive with the spanning
tree feature.
MAD IP address
•
Use
the
mad ip address
command instead of the
ip address
command to configure MAD IP addresses on the BFD MAD-enabled
interface.
•
Make sure all the MAD IP addresses are on the same subnet and not
used by any member device.
Restrictions and guidelines for interfaces
By default, interfaces on the devices are disabled (in
ADM
or
Administratively Down
state). To
have an interface operate, you must use the
undo shutdown
command to enable that interface.
Make sure all IRF physical interfaces are operating in bridge mode (the default).
Procedures
Setting up the IRF fabric
1.
Configure Device A:
# Shut down the physical interfaces used for IRF connection. This example uses the port group
that contains Ten-GigabitEthernet 1/0/51 to Ten-GigabitEthernet 1/0/54 for IRF connection.
<DeviceA> system-view
[DeviceA] interface range ten-gigabitethernet 1/0/51 to ten-gigabitethernet 1/0/54
[DeviceA-if-range] shutdown
[DeviceA-if-range] quit
# Bind Ten-GigabitEthernet 1/0/51 and Ten-GigabitEthernet 1/0/52 to IRF-port 1/1.
[DeviceA] irf-port 1/1
[DeviceA-irf-port1/1] port group interface ten-gigabitethernet 1/0/51
[DeviceA-irf-port1/1] port group interface ten-gigabitethernet 1/0/52
