10
MAD
mechanism
Advantages
Disadvantages
Application
scenarios
that are
geographically
close to one
another.
LACP MAD
As shown in
, LACP MAD has the following requirements:
•
Every IRF member must have a link with an intermediate device.
•
All the links form a dynamic link aggregation group.
•
The intermediate device must be a device that supports extended LACP for MAD.
The IRF member devices send extended LACPDUs that convey a domain ID and an active ID (the
member ID of the master). The intermediate device transparently forwards the extended LACPDUs
received from one member device to all the other member devices.
•
If the domain IDs and active IDs sent by all the member devices are the same, the IRF fabric is
integrated.
•
If the extended LACPDUs convey the same domain ID but different active IDs, a split has
occurred. LACP MAD handles this situation as described in "
Figure 9 LACP MAD scenario
BFD MAD
BFD MAD detects multi-active collisions by using BFD.
Intermediate device
Master
Subordinate
IRF
fabric
Internet
Customer
premise
network
IRF link
Common traffic path
LACP MAD traffic path
LACP-enabled dynamic
link aggregation
LACP-enabled dynamic
link aggregation
Summary of Contents for MSR 5600
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