Cisco Catalyst 4500e Series, Руководство по установке

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D-8
Catalyst 4500 E-Series Switches Installation Guide
OL-13972-01
Appendix D Module Overview and Specifications
Hot-Swapping Feature
Hot-Swapping Feature
Catalyst 4500 E-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.
Caution
To avoid erroneous failure messages, allow at least 15 seconds for the system to re initialize, and note
the current configuration of all interfaces before you remove or insert another switching module.
When you hot swap switching modules, the system displays status messages on the console screen. The
following sample display shows the messages logged by the system when a switching module is removed
from slot 2:
Console> (enable)
2001 Sep 09 12:23:26 %SYS-5-MOD_REMOVE:Module 3 has been removed
Console> (enable)
2001 Sep 09 12:23:44 %SYS-5-MOD_INSERT:Module 3 has been inserted
Console> (enable)
2001 Sep 09 12:23:47 %SYS-5-MOD_OK:Module 3 is online
Console> (enable)
If you use the show port command to query the module before reinstalling a module to replace the
removed one, the system responds, “Module 3 is not installed.” When the module is reinserted, the
system recognizes the module as ready again.
Flashing
orange The link has been disabled due to a hardware failure.
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.
Table D-3 Switching Module LEDs (continued)
LED Color/State Description