16/10 Gbps Ethernet CX4 stacking module
The Brocade FCX 624S, FCX 648S, FCX 624S-F, FCX 624S-HPOE, and FCX 648S-HPOE devices
include two 16/10 Gbps Ethernet CX4 ports on the rear panel (the stacking ports). The device can
perform data transmission directly through copper links of up to 3 meters.
The Up Link and Down Link LEDs on the front panel indicate operational status. If the Up Link or Down
Link LED is on, the port is connected. If the Up Link or Down Link LED is off, no connection exists, or
the link is down.
Cable specifications for CX4 stacking ports
The following cable specifications apply to the CX4 stacking ports:
• Support for 802.3ak or 10 Gbps Ethernet CX4 standard and 16 Gbps inter-unit stacking (up to 8
units in a stack)
• Support for cables up to 3 meters in length
• Requires latch-style receptacle or SFF-8470 plug
NOTE
Brocade FCX 624-E, FCX 624-I, FCX 648-E, and FCX 648-I devices can be added to a stack using the
first two ports on a four-port 10 Gbps SFP+ module (optional) using standard duplex LC cables.
Optional 2-port 10 Gbps SFP+ uplink module
The following Brocade FCX devices include a slot on the front panel for a two-port 10 Gbps SPF+ uplink
module. This module operates at 10 Gbps full duplex.
• Brocade FCX 624S
• Brocade FCX 648S
• Brocade FCX 624S-F
• Brocade FCX 624S-HPOE
• Brocade FCX 648S-HPOE
The 2-port 10 Gbps SPF+ uplink module can replace the 2-port XFP module in the fixed slot 3. Port
mapping is the same as for the 2x10 XFP with slot 3 and port 1 or 2, for example, 1/3/1 and 1/3/2.
Stacking is supported using the stack default-port command with the 1/3/1 and 1/3/2 options.
The module is named FCX-2SFPP 2-port 10G Module (2-SFP+) in configuration and output.
NOTE
Reload the device whenever you install or replace the module because the 2x10 SFP+ module is not
hot swappable.
16/10 Gbps Ethernet CX4 stacking module
Brocade FCX Series Hardware Installation Guide 21
53-1002977-01
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