Foundry Hardware Installation Guide for the FES, FESX, and FWSX
6 - 8 © 2008 Foundry Networks, Inc. December 2008
Replacing a CPU DIMM
NOTE: This section applies to FESX IPv6 (FESX6) devices only.
The FESX IPv6-Ready models ship with 256 MB of SDRAM. The FESX-E models ship with 512 MB SDRAM. If
needed, you can replace the DIMM installed in the device, or you can upgrade the DIMM in an IPv6-Ready device
to support 512 MB SDRAM.
To replace the DIMM, perform the following steps:
1. Disassemble the FastIron chassis as instructed in the section “Disassembling the Chassis” on page 6-6.
2. If there is a 10-GbE module installed, remove it as instructed in the section “Removing a 10-Gigabit Ethernet
Module” on page 6-6.
3. Remove the existing CPU DIMM located near the upper left corner of the main board by pulling up on the
metal tabs on both sides of the DIMM. The DIMM should pop out of the socket at an angle. Carefully remove
the DIMM module.
4. If you are replacing the DIMM with a 512 MB DIMM on a 24-port model and the device has a 10-GbE module,
remove the standoff or guide link (mounting post) located near the DIMM slot. This post can interfere with the
larger 512 MB DIMM. Insert a screw in place of the post. The remaining post is sufficient to properly align the
10-GbE module for re-installation.
5. Place the new DIMM so that the pins line up correctly with the socket. Insert the new DIMM into the socket at
an angle and push downward, towards the board until the metal tabs snap into place.
6. If applicable, re-install the 10-GbE module as instructed in the section “Installing a 10-Gigabit Ethernet
Module” on page 6-7.
7. Re-assemble the chassis as instructed in the section “Re-assembling the Chassis” on page 6-7.
Replacing a Fiber Optic Module
You can remove an SFP or XFP from a port and replace it with a new one while the FastIron Stackable device is
powered on and running.
This section provides information about the following tasks:
• Removing a fiber optic module
• Installing a new fiber optic module
• Cabling a fiber optic module
Removing a Fiber Optic Module
You can remove a fiber SFP (also called a mini-GBIC) or an XFP from a port while the FastIron Stackable device
is powered on and running.
Before removing a fiber optic module, have the following on hand:
• An ESD wrist strap with a plug for connection to the ESD connector on the FastIron Stackable device.
WARNING: For safety reasons, the ESD wrist strap should contain a series 1 meg ohm resistor.
• The protective covering that you removed from the fiber optic module when you initially installed the module.
To remove a fiber optic module from a Gigabit Ethernet or 10-Gigabit Ethernet port, do the following:
1. Put on the ESD wrist strap and ground yourself by attaching the clip end to a metal surface (such as an
equipment rack).
2. Disconnect the fiber cable connector from the port connector.
3. Insert the protective covering into the port connectors.
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