Operating Mode; Irf Member Roles - HP FlexFabric 12900 Series Configuration Manual

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.

Operating mode

The device operates in one of the following modes:
Standalone mode—The device cannot form an IRF fabric with other devices.
•
IRF mode—The device can form an IRF fabric with other devices.
•

IRF member roles

IRF uses two member roles: master and standby (called subordinate throughout the documentation).
When devices form an IRF fabric, they elect a master to manage the IRF fabric, and all other devices back
up the master. When the master device fails, the other devices automatically elect a new master. For more
information about master election, see
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
"Master
Device B
(Member ID=2)
Active MPU
Standby MPU
IRF-port 1
IRF physical Network
interfaces interfaces
election."
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