1-25
To do…
Use the command…
Remarks
Access port
port access vlan
vlan-id
Trunk port
port trunk permit vlan vlan-id
Assign the port
to the VLAN
dedicated for
the BFD MAD
detection
Hybrid port
port hybrid vlan vlan-id
Required
You can select one approach
according to the port type.
BFD MAD detection has no
requirement on the link type of
the detection port, and you do
not need to modify the current
link type.
By default, the port is an access
port.
Return to system view
quit
—
Enter VLAN interface view
interface vlan-interface
interface-number
—
Enable BFD MAD
mad bfd enable
Required
Disabled by default.
Configure a MAD IP address for
the VLAN interface on the
specified member
mad ip address ip-address
{
mask
|
mask-length
}
chassis
chassis-number
Required
By default, no MAD IP address is
configured for any interface.
z
Add all ports (including ports on both the IRF member and the intermediate device) on the BFD
MAD detection link into the VLAN that corresponds to the VLAN interface used for the detection.
z
A VLAN interface enabled with BFD MAD detection and the interfaces of this VLAN do not support
any Layer 2 and Layer 3 protocol applications, including ARP and LACP.
z
You cannot enable BFD MAD detection on VLAN-interface 1.
z
BFD MAD detection links are dedicated, and you are not allowed to configure other services on
BFD MAD detection link.
z
Only the MAD IP address can be configured for a VLAN interface enabled with BFD MAC detection,
and other type of IP addresses are not allowed to be configured for it.
z
If the BFD MAD detection link between two members is set up through an intermediate device,
disable the STP function on the intermediate device to ensure the normal function of BFD MAD
detection.
z
If an IRF virtual device enabled with BFD MAD detection partitions, the partitioned IRF virtual
devices may still keep the forwarding entries destined to the original master, and thus routing
collision information is generated. The routing collision information does not affect data forwarding
and stops being generated when the entries are aged out.
Excluding a Port from the Shut Down Action upon Detection of Multi-Active Collision
By default, all service ports of an IRF virtual device except the IRF ports are shut down when the IRF
virtual device transits to recovery state upon detection of a multi-active collision. If a port must be kept
in the up state for special purposes such as telnet connection, exclude it from the shut down action.
