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3-21
z When 2-port interface modules are used to constitute an IRF of switches and the ports are not
assigned to any aggregation group, ports of the interface module in slot 1 (MOD 1) can be
connected to ports of MOD 1 or MOD 2. However, the left port can be connected to only the right
port of another interface module, that is, two ports at the same side cannot be connected, as shown
in
Figure 3-27.
Figure 3-27 Cable connections in an IRF in the non-aggregate mode with 2-port interface modules
z When 2-port interface modules are adopted in an IRF with ports operating in the aggregation mode,
ports of MOD 1 can only be connected to ports of MOD 2, and the locations of the ports of the
interface modules are not limited.
Figure 3-28 Cable connections in an IRF in the aggregation mode with 2-port interface modules
z 1-port interface modules do not support port aggregation in the IRF. When 1-port interface modules
are connected for an IRF, the port of MOD 1 can only be connected to the port on MOD 2, as shown
by callout 1 in
Figure 3-29; when a 1-port interface module is connected to a 2-port interface
module for an IRF, the port of MOD 1 can only be connected to the right port of the 2-port interface
module, as shown by callout 2 in
Figure 3-29.