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Analysis
The requirements in this example include the following categories:
•
IRF setup
•
BFD MAD configuration
•
Network connectivity configuration
IRF setup
To set up an IRF fabric, determine the items in
Table 5 Basic IRF setup
Item
Topology
Member
assignment
Master device
IRF
bindings
Figure 9 IRF fabric topology
Table 6 IRF physical interface bindings
IRF port
Device A:
IRF-port 1
IRF-port 2
Device B:
Analysis
You can use a ring or daisy-chain topology for a three- or
four-chassis IRF fabric.
For reliability, use the ring topology.
ID
IRF member IDs must be unique.
IRF members elect a master automatically. For a member
device to be elected the master, assign it the highest
member priority.
Make sure the IRF port bindings are consistent with the
physical connections.
port
For high availability, bind multiple physical interfaces to an
IRF port. These ports will automatically aggregate for load
balancing and redundancy.
Table
5.
IRF physical interfaces
HundredGigE 1/0/25
HundredGigE 1/0/26
HundredGigE 1/0/27
HundredGigE 1/0/28
22
Choice
in
this
example
Ring
topology
(see
Figure
9).
Device A—1.
Device B—2.
Device C—3.
Device D—4.
Device A.
See
Table
6.
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