24
MAD
mechanism
Advantages Disadvantages Application scenario
ARP MAD
• No intermediate device is
required.
• Intermediate device, if
used, can come from any
vendor.
• Requires no MAD
dedicated ports.
• Detection speed is
slower than BFD MAD
and LACP MAD.
• The spanning tree
feature must be
enabled.
Spanning tree-enabled
non-link aggregation
IPv4 network scenario.
For information about
ARP, see Layer 3—IP
Services Configuration
Guide.
Configuring LACP MAD
When you use LACP MAD, follow these guidelines:
• The intermediate device must be an HPE device that support extended LACP for MAD.
• If the intermediate device is also an IRF fabric, assign the two IRF fabrics different domain IDs
for correct split detection.
• Use dynamic link aggregation mode. MAD is LACP dependent. Even though LACP MAD can
be configured on both static and dynamic aggregate interfaces, it takes effect only on dynamic
aggregate interfaces.
• Configure link aggregation settings also on the intermediate device.
To configure LACP MAD:
Step Command Remarks
1. Enter system view.
system-view
N/A
2. Assign a domain ID to the
IRF fabric.
irf domain
domain-id The default IRF domain ID is 0.
3. Create an aggregate
interface and enter
aggregate interface view.
• Enter Layer 2 aggregate
interface view:
interface bridge-aggregation
interface-number
• Enter Layer 3 aggregate
interface view:
interface route-aggregation
interface-number
Use either command.
Perform this step on the
intermediate device as well.
4. Configure the aggregation
group to operate in dynamic
aggregation mode.
link-aggregation mode dynamic
By default, an aggregation
group operates in static
aggregation mode.
Perform this step on the
intermediate device as well.
5. Enable LACP MAD.
mad enable
By default, LACP MAD is
disabled.
6. Return to system view.
quit
N/A
7. Enter Ethernet interface
view.
interface
interface-type
interface-number
N/A
8. Assign the Ethernet
interface to the specified
aggregation group.
port link-aggregation group
number
Perform this step on the
intermediate device as well.
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