3Com Switch 4800G 24-Port Configuration Manual page 11

You need to specify the correspondence between an IRF port and physical IRF port(s) through
command line. When you specify that an IRF port is bound to one physical IRF port, the serial number
of the physical IRF port bound to IRF port 1 must be smaller than that of the physical IRF port bound to
IRF port 2; when you specify that an IRF port is bound to two physical IRF ports (aggregate IRF port),
these two physical IRF ports must be on the same module.
As shown in Figure 1-7. Switch A connects to Switch B and Switch C through IRF ports IRF-port 1 and
IRF-port 2 respectively.
Figure 1-7 IRF port correspondence
Based on the type and number of the interface module inserted on Switch A, you can adopt one of the
following typical correspondences to establish an IRF connection.
The dual-port 10 GE CX4 interface module is used in the following examples to introduce
correspondence between the IRF port and the physical IRF port(s).
When the dual-port 10 GE SFP interface module is used, the correspondence between the IRF
port and the physical IRF port(s) is similar.
2) IRF port correspondence for one interface module
Figure 1-8 IRF port correspondence for one interface module
When a dual-port interface module is installed, you need to bind IRF-port 1 to physical IRF port 1, and
IRF-port 2 to physical IRF port 2 (as shown in
IRF port bound to IRF-port 1 must be smaller than that of the physical IRF port bound to IRF-port 2.
Therefore, you cannot bind IRF-port 1 to physical IRF port 2, and IRF-port 2 to physical port 1.
Figure 1-8), because the serial number of the physical
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