Removing an Interface Module
Procedure
Step 1 Slip on the ESD-preventive wrist strap that was included in the accessory kit.
Step 2 To remove an interface module, disconnect all the cables from each interface module.
Step 3 Loosen the locking thumbscrews on both sides of the interface module.
Step 4 Slide the interface module out of the IM slot by pulling on the handles. If you are removing a blank filler
plate, pull the blank filler plate completely out of the IM slot using the captive screws.
Hot-Swapping an RSP or Interface Module
The Cisco NCS 560-4 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.
3. Initializes the newly inserted module. In addition, the system notes any removed modules and places those
modules in the administratively shutdown state.
4. Places any previously configured interfaces on the module back to the state they were in when they were
removed. Any newly inserted interfaces are put in the administratively shutdown state as if they were
present (but unconfigured) at boot time. If you insert the same type of module into a slot, its ports are
configured and brought online up to the port count of the original module.
The router runs diagnostic tests on any new interfaces and the test results indicate the following:
• If the tests pass, the router is operating normally.
• If the new module is faulty, the router resumes normal operation but leaves the new interfaces disabled.
• If the diagnostic tests fail, the router stops operating, which usually indicates that the new module has a
problem in the bus and should be removed.
Use the following guidelines when performing an OIR on an IM:
• Allow at least two minutes for the system to reinitialize before inserting a new IM.
• Avoid inserting a new IM during bootup until the active and standby RSPs have reached an OK state.
• When inserting multiple IMs into the chassis, wait until each IM reaches an OK state before inserting
the next IM.
Cisco NCS 560-4 Router Hardware Installation Guide
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Installing the Cisco NCS 560-4 Router
Removing an Interface Module
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