Mad Enable - H3C S9800 Series Manual

When you configure BFD MAD that uses management Ethernet ports, follow these restrictions and
guidelines:
Category
Ports on the intermediate
device for BFD MAD
BFD MAD VLAN
MAD IP address
Examples
# Enable BFD MAD on VLAN-interface 3.
<Sysname> system-view
[Sysname] interface vlan-interface 3
[Sysname-Vlan-interface3] mad bfd enable

mad enable

Use mad enable to enable LACP MAD.
Use undo mad enable to disable LACP MAD.
Syntax
mad enable
undo mad enable
Default
LACP MAD is disabled.
Views
Aggregate interface view
Predefined user roles
network-admin
mdc-admin
Usage guidelines
LACP MAD uses extended LACP packets to detect multi-active collisions. This MAD mechanism requires
an intermediate H3C device that supports extended LACPDUs.
LACP MAD handles collisions differently than BFD MAD. To avoid conflicts, do not use LACP MAD
together with BFD MAD.
Restrictions and guidelines
Use common Ethernet ports on the intermediate device to connect the
management Ethernet ports on the IRF fabric.
•
On the intermediate device, create a VLAN for BFD MAD, and assign the
ports used for BFD MAD to the VLAN. On the IRF fabric, you do not need to
assign the management Ethernet ports to the VLAN.
•
Make sure the IRF fabrics on the network use different BFD MAD VLANs.
•
To avoid problems, only use the mad ip address command to configure IP
addresses on the BFD MAD-enabled management Ethernet port. Do not
configure an IP address with the ip address command or configure a VRRP
virtual address on the BFD MAD-enabled management Ethernet port.
•
Make sure all the MAD IP addresses are on the same subnet.
•
The MAD IP addresses must not be the same as any IP addresses assigned to
interfaces or VRRP groups in the IRF fabric.
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