25
Category Restrictions
and
guidelines
MAD IP address
•
To avoid problems, only use the
mad ip address
command to configure IP
addresses on the BFD MAD-enabled VLAN interface. Do not configure an IP
address with the
ip address
command or configure a VRRP virtual address on
the BFD MAD-enabled VLAN interface.
•
All MAD IP addresses on the BFD MAD-enabled VLAN interface must be on
the same subnet.
Examples
# Enable BFD MAD on VLAN-interface 3.
<Sysname> system-view
[Sysname] interface vlan-interface 3
[Sysname-Vlan-interface3] mad bfd enable
This command will enable BFD MAD on the VLAN interface. Continue? [Y/N]: Y
mad enable
Syntax
mad enable
undo mad enable
View
Aggregate interface view
Default level
3: Manage level
Parameters
None
Description
Use
mad enable
to enable LACP MAD.
Use
undo mad enable
to disable LACP MAD.
By default, LACP MAD is disabled.
LACP MAD uses extended LACP packets for detecting multi-active collisions and requires an intermediate
H3C device that also supports LACP MAD packets.
LACP MAD handles collisions differently than BFD MAD and ARP MAD. To avoid conflicts, do not enable
LACP MAD together with BFD MAD and ARP MAD in an IRF fabric. However, you can use BFD MAD and
ARP MAD together.
You must set up a dynamic link aggregation group that spans all IRF member devices between the IRF
fabric and the intermediate device. To enable dynamic link aggregation, configure the
link-aggregation
mode dynamic
command on the aggregate interface.
If the intermediate device is also an IRF fabric, make sure the two IRF fabrics have different domain IDs
for correct split detection. False detection causes IRF split.
You must enter the domain ID when you use the
mad enable
command.
