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Hot Swap Procedure for Switch Modules
All switch modules including the Primary Master and Primary Back Up CPU modules can be changed
while the Switch is powered on. Follow the procedures listed here to remove a module or to insert a
module while the Switch is powered on. Changing a module while the Switch is operating is commonly
called "hot swapping" which is the term we use in this document.
WARNING
Hot Swap Removal of a Switch Module
Remove a single switch module following the procedure listed below. Only one module should be
removed at a time. Wait for the process to be completed before removing (or inserting) another
module. Wear an ESD wrist strap to prevent damage to the module from possible static electric
discharge.
To perform a hot swap removal of a switch module follow these steps:
1. Gently depress the Hot Swap button on the front panel of the module you want to remove.
The Hot Swap button is located between the Per Port Link LED indicators and the Power and
Hot Swap Status indicators. The button can be pressed using your finger, a ballpoint pen or
other suitable instrument.
2. Observe the Hot Swap & Card Status LED indicator on the switch module being removed. It
should blink amber. During this phase the module is sending a message to the master (CPU)
module that a removal has been initiated.
3. The master module detects the removal and updates its database. The master module cuts
power to the switch module being removed. The Power LED indicator and all other LED
indicators on the switch module will go dark.
4. When you see that the switch module has been powered off you may remove it. Unscrew the
installation screws and pull both ejector levers toward the center of the front panel of the
module to unseat it from the backplane of the Switch.
5. If the module is not being reinserted, completely remove it from the slot. It should slide out
easily in the guides. Be sure to properly store the module.
6. If you do not intend to install another module in the vacant slot, cover it with one of the slot
faceplates included with the original shipment.
Note
Unpacking and Setup
DES-7000/DES-7100 Layer 2 Switch User's Guide
When handing Switch modules be sure to wear an ESD wrist
strap to prevent damage from static electric discharge. Do not
attach the strap to any part of the power supply if the Switch is
powered on.
When performing a hot swap of a Master CPU module the
procedure is essentially the same as a hot swap of other switch
modules. The procedure for removing a Primary Master CPU
module is slightly different since the designation of Primary
Master must be transferred to the current Back Up Master before
the unit is powered off. This takes a few seconds. The Master
LED Indicator will light on the new Primary Master CPU module
indicating that the unit is the active master. The former Primary
Master module is powered off and may then be removed.
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