Irf Port; Physical Irf Port; Irf Domain Id - HP 5900 Series Configuration Manual

IRF port

An IRF port is a logical interface for the connection between IRF member devices. Every IRF-capable
device supports two IRF ports. 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.
For more information about physical ports that can be used for IRF links, see
and binding

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.
As shown in
fabric 2. The fabrics have LACP MAD links between them. When a member device in one IRF fabric
receives an extended LACP packet for MAD, it looks at the domain ID in the packet to see whether the
packet is from the local IRF fabric or from a different IRF fabric. Then, the device can handle the packet
correctly.
requirements."
Figure 2, Device A and Device B form IRF fabric 1, and Device C and Device D form IRF
3
"IRF physical port restrictions