Irf Member Id; Mpu Roles; Irf Port; Physical Irf Port - HP 7500 series Configuration Manual

IRF member ID

An IRF fabric uses member IDs to uniquely identify and manage its members. This 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 switch with member ID 2 to an IRF fabric, the name of
interface GigabitEthernet 3/0/1 changes to GigabitEthernet 2/3/0/1, and the file path
slot1#flash:/test.cfg changes to chassis2#slot1#flash:/test.cfg.
If two switches have the same IRF member ID, they cannot form an IRF fabric.

MPU roles

Each IRF member switch has one or two MPUs, which play different roles, as follows:
Role
Global active MPU
Local 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 switch.
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 automatically form an aggregate IRF link. An IRF port goes down only if all its physical IRF ports are
down.

Physical IRF port

Physical IRF ports connect IRF member devices and must be bound to an IRF port. They forward the IRF
protocol packets between IRF member devices and the data packets that must travel across IRF member
devices.
All 10-GE and 40-GE ports on the switch can be used as IRF physical ports.

IRF domain ID

One IRF fabric forms one IRF domain. IRF uses IRF domain IDs to uniquely identify IRF fabrics and prevent
IRF fabrics from interfering with one another.
Description
Active MPU of the master switch. You configure and manage the entire IRF fabric
at the CLI of the global active MPU.
The active MPU that manages the local switch. This MPU has the following
responsibilities:
•
Manages the local switch, including synchronizing configuration between the
local active MPU and 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 global active MPU, all other MPUs, including local active MPUs, are
standby MPUs.
If a member switch has two MPUs, the one backing up the local MPU is the local
standby MPU from the perspective of the member switch.
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