Irf Member Id; Mpu Roles; Irf Port - HP FlexFabric 12500 Series Configuration Manual

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 elect a new master automatically. For more
information about master election, see

IRF member ID

An IRF fabric uses member IDs to uniquely identify and manage its members. If two devices have the
same IRF member ID, they cannot form an IRF fabric. If the IRF member ID of a device has been used in
an IRF fabric, the device cannot join the fabric.
Member ID information is included as the first part of interface numbers and file paths to uniquely
identify interfaces and files in an IRF fabric. For example, after you assign a device with member ID 2 to
an IRF fabric, the name of interface GigabitEthernet 3/0/1 changes to GigabitEthernet 2/3/0/1. The
file path changes from slot1#flash:/test.cfg to chassis2#slot1#flash:/test.cfg.
By default, the standby MPU of a device is assigned the same ID automatically as the active MPU. You
can change the standby MPU ID of one member device to quickly recover IRF configuration for another
member device that has only one MPU. The process is described in
a one-MPU

MPU roles

Each IRF member device has one or two MPUs. The following are roles that the MPUs play:
Role
Master MPU
Active MPU
Standby MPU

IRF port

An IRF port is a logical interface for the connection between IRF member devices. Every IRF-capable
device supports two IRF ports.
In standalone mode, the IRF ports are named IRF-port 1 and IRF-port 2.
In IRF mode, the IRF ports are named IRF-port n/1 and IRF-port n/2, where n is the member ID of the
device. The two IRF ports are referred to as "IRF-port 1" and "IRF-port 2" in this book for simplicity.
To use an IRF port, you must bind at least one physical port to it. The physical ports assigned to an IRF
port form an aggregate IRF link automatically. An IRF port goes down only if all its physical IRF ports are
down.
member."
Description
Active MPU of the master device. It is also called the "global active MPU." You
configure and manage the entire IRF fabric at the CLI of the global active MPU.
Active MPU on each member device. An active MPU has the following
responsibilities:
•
Manages the local device, including synchronizing configuration with the
local standby MPU, processing protocol packets, and creating and
maintaining route entries.
•
Handles IRF related events, such as master election and topology collection.
For the master MPU, all other MPUs, including active MPUs on subordinate
devices, are standby MPUs.
If a member device has two MPUs, the one backing up the local active MPU is
the local standby MPU from the perspective of the member device.
"Master election."
5
"Fast-restoring IRF configuration for