Hot-Swapping Feature

Chapter 1 Module Overview and Specifications

		Hot-Swapping Feature
Table 1-3 Switching Module LEDs (continued)

LED	Color/State	Description

Port		Indicates individual port status.
Status2
	Green	The port is operational (a signal is detected).
	Orange	The link has been disabled by software.
	Flashing	The link has been disabled due to a hardware failure.
	orange
	Off	No signal is detected.

1.Used on the WS-X4232-L3 Ethernet routing module.

2.LEDs labeled 1 through the number of ports on the switching module are the individual port link LEDs.

Catalyst 4500 series switches allow you to remove and replace switching modules without powering down the switch. This feature is known as hot swapping.

When you remove or insert a switching module while the switch is operating, the system does the following:

1.Scans the backplane for configuration changes.

2.Initializes all newly inserted switching modules, notes any removed modules, and places them in the administratively shutdown state.

3.Places any previously configured interfaces on the switching 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 switching-module type into a slot, its ports are configured and brought online up to the port count of the original switching module.

The system runs diagnostic tests on any new interfaces. If the test passes, the system is operating normally. If the new switching module is faulty, the system resumes normal operation but places the new module in the “faulty” state.

If the diagnostic test fails, the system crashes, which usually indicates that the new switching module has a problem and should be removed.

	Catalyst 4500 Series Module Installation Guide
	Catalyst 4500 Series Module Installation Guide
78-13267-06		1-45
78-13267-06		1-45

4000 specifications

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