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Cisco MGX 8950 Hardware Installation Guide
Release 3, Part Number 78-14147-02 Rev. A0, November 2002
Chapter 2 Preparing for Installation
Safety Requirements
Installation and Replacement Suggestions
The following are examples of recommended installation and replacement practices for the
Cisco
MGX 8950 switch cards and modules.
Caution Any card or module that is only partially connected to the backplane can disrupt system operation.
• Do not force the card or module into its slot. This action can damage the pins on the backplane if
they are not aligned properly with the card or module.
• Ensure that the card or module is straight and not at an angle when you install it in the slot. Installing
the card or module at an angle can damage it. Use the guide rails to install the card or
module
correctly.
• Fully depress the levers to ensure that the card or module connector mates with the backplane
correctly.
Hot Swapping Cards and Modules
Hot swapping allows you to remove and replace cards without disconnecting system power. The
Cisco
MGX 8950 switch supports hot swapping for the card and modules. Hot swapping a card only
interrupts service when the card set is operating in standalone mode, or when the card is operating in
redundancy mode and the wrong card is pulled.
Card Installation Guidelines
Before you install a front or back card, be sure to follow these guidelines:
• Inspect the backplane for bent pins or bent dividers between pin rows (see Figure 2-1). If the
backplane has bent pins, do not install a card in that slot. Installing a card in a damaged backplane
slot damages the connector on the card.
Figure 2-1 Backplane Inspection Check Points
Bent pins Bent divider
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