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HP FlexFabric 12900 Series Configuration Manual: Network Topologies; Basic Concepts

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Network scalability and resiliency—Processing capacity of an IRF fabric equals the total
processing capacities of all the members. You can increase ports, network bandwidth, and
processing capacity of an IRF fabric simply by adding member devices without changing the
network topology.

Network topologies

The HP 12900 IRF fabric only supports the daisy-chain topology. For information about connecting IRF
member devices, see

Basic concepts

This section uses
IRF.
Figure 2 Two-chassis IRF fabric implementation schematic diagram
Device A
(Member ID=1)
Active MPU
Standby MPU
Network
IRF physical
interfaces
interfaces
In this figure, Device A and Device B form a two-chassis IRF fabric. The fabric has four MPUs (one active
and three standbys), and two times the number of interface cards that a single device provides. The IRF
fabric manages the physical and software resources of Device A and Device B in a centralized manner.
"Connecting IRF physical
Figure 2
to describe the basic concepts that you might encounter when you work with
IRF-port 2
IRF link
An IRF
fabric is
formed.
IRF
Master
(Member ID=1)
IRF's master MPU
IRF's standby MPU
Subordinate
(Member ID=2)
IRF's standby MPU
IRF's standby MPU
interfaces."
Device B
(Member ID=2)
Active MPU
Standby MPU
IRF-port 1
IRF physical
Network
interfaces
interfaces
4

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