Hot-Swapping An Rsp Module - Cisco ASR 903 Installation Manual

Installing the Cisco ASR 903 Router
Warning
Hazardous voltage or energy is present on the backplane when the system is operating. Use caution when
servicing. Statement 1034
Warning
Invisible laser radiation may be emitted from disconnected fibers or connectors. Do not stare into beams or
view directly with optical instruments. Statement 1051
To remove an RSP module, perform the following steps:
Step 1 Disconnect any cables attached to the ports on the module.
Step 2
Verify that the captive installation screws on all the modules in the chassis are tight. This step ensures that the space
created by the removed module is maintained.
If the captive installation screws are loose, the EMI gaskets on the installed modules will push the modules
Note
toward the open slot, which in turn reduces the size of the opening and makes it difficult to remove the module.
Step 3 Loosen the two captive installation screws on the module you plan to remove from the chassis.
Step 4 Place your thumbs on the ejector levers (see the figure Cisco ASR 903 Router RSP Installation ) and simultaneously
rotate the ejector levers outward to unseat the module from the backplane connector.
Step 5 Grasp the front edge of the module and slide the module straight out of the slot. If the chassis has horizontal slots, place
your hand under the module to support its weight as you slide it out from the slot. Do not touch the module circuitry.
Caution To prevent ESD damage, handle modules by the carrier edges only.
Step 6
Place the module on an antistatic mat or antistatic foam, or immediately reinstall the module in another slot.
Step 7 Install blank module filler plates (Cisco part number A900-RSPA-BLANK) in empty slots, if any.
Blank faceplates and cover panels serve three important functions: they prevent exposure to hazardous voltages
Warning
and currents inside the chassis; they contain electromagnetic interference (EMI) that might disrupt other
equipment; and they direct the flow of cooling air through the chassis. Do not operate the system unless all
cards, faceplates, front covers, and rear covers are in place. Statement 1029

Hot-Swapping an RSP Module

The Cisco ASR 903 Router provides a feature that allows you to remove and replace a redundant RSP module
without powering down the router. This feature, called hot-swapping or OIR, allows you to remove and replace
a redundant module without disrupting router operation.
When two redundant modules are installed in the router, only one of the modules is active. The other one runs
in standby mode, ready to take over processing if the active module fails.
When you remove or insert a redundant module while the router is powered on and running, the router does
the following:
1. Determines if there is sufficient power for the module.
2. Scans the backplane for configuration changes.
Cisco ASR 903 and ASR 903U Aggregation Services Router Hardware Installation Guide
Hot-Swapping an RSP Module
91