Cisco OSM-12CT3/T1 - Optical Services Module Multiplexor Przewodnik Instalacji Pobierz pdf (Strona 34)

Chapter 1 Product Overview

Hot Swapping Supervisor Engines and Modules

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Cisco 7600 Series Internet Router Module Installation Guide

78-12798-07

Note Although the FlexWAN module supports hot swapping, individual port

adapters do not. To replace port adapters, you must first remove the FlexWAN

module from the chassis and then replace port adapters as required.

When you remove or insert a module while the router is powered on and

operating, the system does the following:

1. Determines if there is sufficient power for the module.

2. Scans the backplane for configuration changes.

3. Initializes all newly inserted modules, notes any removed modules, and

places them 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 a similar module type into a slot, its

ports are configured and brought online up to the port count of the original

module.

The system runs diagnostic tests on any new interfaces. If the test passes, the

system is operating normally. If the new module is faulty, the system resumes

normal operation but leaves the new interface disabled.

If the diagnostic test fails, the system crashes, which usually indicates that the

new module has a problem in the bus and should be removed.

When you install two supervisor engines, hot swapping allows you to remove and

replace one of the supervisor engines without turning off the system power.

Caution To avoid erroneous failure messages, note the current configuration of all

interfaces before you remove or replace another module, and allow at least

15 seconds for the system to reinitialize after a module has been removed or

replaced.

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Cisco OSM-12CT3/T1 - Optical Services Module Multiplexor Przewodnik Instalacji Strona 34