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Installing and Removing S-Series 10-Gigabit Modules
fn00144_stack
Carefully slide the module
straight into the bay to
avoid damaging its
components
.
This document is for the XFP and CX4 modules that can be installed in the rear expansion slots of the following
S-Series switches — S50, S50N, S50V, and S25P. (The S50 uses a wider module than the module used in the other
models.) Each module contains two 10-Gigabit (10G) ports.
The S50 switch has one expansion slot in the left rear of its chassis (as you face the front of the switch). The other
models have two expansion slots in the right rear of their chassis (as you face the front; see Figure 1), into which
you can insert XFP and CX4 modules, in any combination with each other or with a stacking module.
Use the following procedure to remove and install modules:
Step Task
1 If the switch is on, save the running config, if desired (and different from the startup configuration),
with the command write memory. Then power off the switch by pulling its power cable.
Caution: Removing a module from a running switch will crash and lock up the switch, requiring a
power cycle. While you can insert a module into the switch without a problem, the module will not
be usable until after a reboot.
2 Use a #2 Phillips screwdriver to remove either the module faceplate or an existing module.
The system numbers the 10-Gigabit ports from left to right (as you face the front of the switch).
So, for clarity in the use of the CLI in port assignment, if you are using only one XFP or CX4
module in the S50N, S50V or S25P, insert it in the left-most expansion slot.
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4 Secure the captive screws on either side of the module.
Grasping the module faceplate, remove the module from its packaging and slide it into the slot
until the module faceplate is flush with the switch.
Figure 1 Inserting a 10G Module in an S50N, S50V, or S25P
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Step Task
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The optical XFP 10-Gigabit module requires additional XFP transceiver inserts, which are not
included in this kit (see the installation instructions that come with the transceiver). The ports in the
copper CX4 module do not require inserts.
If you are installing a CX4 module, and you are connecting the ports with a cable substantially
shorter or longer than 5m, use the cx4-cable-length command to set the signal strength. Use
cx4-cable-length long for a longer cable, cx4-cable-length short for a shorter cable. See the
System Management Commands chapter in the SFTOS Command Reference for details.
Note: Take care not to connect CX4 ports to 12G stack ports in the S50N, S50V, and S25P. Their
receptacles and cables are the same, but they are incompatible. CX4 ports are labeled as such;
stack ports are not labeled. You can order several cable lengths of each type; they are not part of
this kit.
For details on enabling ports, see the Quick Reference for your system, its installation guide, or
the SFTOS Configuration Guide.
Installation Notes: If there is a failure in a module, it must be replaced. They are not
field-serviceable.
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