Configuring Lacp Mad - HP 5900 Series Configuration Manual

Table 1 A comparison of the MAD mechanisms
MAD
mechanism
LACP MAD
BFD MAD
ARP MAD
ND MAD

Configuring LACP MAD

When you use LACP MAD, follow these guidelines:
The intermediate device must be a device that supports extended LACP for MAD.
•
If the intermediate device is in an IRF fabric, assign this fabric a different domain ID than the LACP
•
MAD-enabled fabric to avoid false detection of IRF split.
Advantages
•
Detection speed is fast.
•
Requires no MAD-dedicated
physical ports or interfaces.
•
Detection speed is fast.
•
No intermediate device is
required.
•
Intermediate device, if used,
can come from any vendor.
•
No intermediate device is
required.
•
Intermediate device, if used,
can come from any vendor.
•
Requires no MAD dedicated
ports.
•
No intermediate device is
required.
•
Intermediate device, if used,
can come from any vendor.
•
Requires no MAD dedicated
ports.
Disadvantages
Requires an intermediate
device that supports
extended LACP for MAD.
•
Requires MAD dedicated
physical ports and Layer
3 interfaces, which
cannot be used for
transmitting user traffic.
•
If no intermediate device
is used, the IRF members
must be fully meshed.
•
If an intermediate device
is used, every IRF
member must connect to
the intermediate device.
•
Detection speed is slower
than BFD MAD and LACP
MAD.
•
The spanning tree feature
must be enabled.
•
Detection speed is slower
than BFD MAD and LACP
MAD.
•
The spanning tree feature
must be enabled.
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Application scenario
Link aggregation is used
between the IRF fabric
and its upstream or
downstream device.
For information about
LACP, see Layer 2—LAN
Switching Configuration
Guide.
•
Suitable for various
network scenarios.
•
If no intermediate
device is used, this
mechanism is only
suitable for IRF fabrics
that have a small
number of members
that are
geographically close
to one another.
For information about
BFD, see High
Availability
Configuration Guide.
Spanning tree-enabled
non-link aggregation IPv4
network scenario.
For information about
ARP, see Layer 3—IP
Services Configuration
Guide.
Spanning tree-enabled
non-link aggregation IPv6
network scenario.
For information about
ND, see Layer 3—IP
Services Configuration
Guide.