45
3.
Verify that the Layer 3 interface used for BFD MAD and the BFD MAD VLAN (if any) are
configured correctly:
a.
Execute the
display mad verbose
command.
b.
Check the
MAD BFD enabled interface
field to identify the Layer 3 interface used for BFD
MAD. This interface can be a VLAN interface, Layer 3 aggregate interface, or management
Ethernet port.
NOTE:
The interface used for MAD BFD can be a VLAN interface, Layer 3 aggregate interface, or
management Ethernet port, depending on the software version. For more information, see
IRF configuration in the configuration guides for the software version of your device.
c.
Verify that the Layer 3 interface used for BFD MAD is configured as required depending on
the interface type.
list the restrictions and guidelines on
configuring a VLAN interface, Layer 3 aggregate interface, and management Ethernet port,
respectively.
Table 3 BFD MAD configuration restrictions and guidelines (VLAN interface)
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 intermediate device, create a VLAN for
BFD MAD.
On both the IRF fabric and intermediate device, assign the ports of
BFD MAD links to the BFD MAD VLAN.
On the IRF fabric, create a VLAN interface for 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 that port is not on a
BFD MAD link. If you have assigned that port to all VLANs by using
the
port trunk permit vlan all
command, use the
undo port
trunk permit
command to exclude that port from the BFD MAD
VLAN.
BFD MAD VLAN and
feature compatibility
Do not use the BFD MAD VLAN and its member ports for any purpose
other than configuring BFD MAD.
•
Use only the
mad bfd enable
and
mad ip address
commands on
the BFD MAD-enabled VLAN interface. If you configure other
features, both BFD MAD and other features on the interface might run
incorrectly.
•
Disable the spanning tree feature on any Layer 2 Ethernet ports in the
BFD MAD VLAN. The MAD feature is mutually exclusive with the
spanning tree feature.
Table 4 BFD MAD configuration restrictions and guidelines (Layer 3 aggregate
interface)
Category
Restrictions and guidelines
BFD MAD-enabled
Layer 3 aggregate
interface
•
Make sure the Layer 3 aggregate interface operates in static
aggregation mode.
•
Make sure the member ports in the aggregation group do not exceed
the maximum number of Selected ports allowed for an aggregation
group. If the number of member ports exceeds the maximum number of
Selected ports, some member ports cannot become Selected. BFD