3com 4500 26-PORT Manual De Usuario

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C
HAPTER
 12: U
SING
 S
YSTEM
 M
ANAGEMENT
 C
OMMANDS
Description
Use the 
mac-address timer
 command to configure the aging time of the Layer-2 
dynamic address table entry. Use the 
undo mac-address timer
 command to 
restore the default value.
Setting the aging time on the switch to be too long or too short will cause the 
switch to broadcast data packets without MAC addresses, this will affect the 
operational performance of the switch. 
If the aging time is set too long, the switch will store out-of-date MAC address 
tables. This will consume MAC address table resources and the switch will not be 
able to update MAC address table according to the network change.
If aging time is set too short, the switch may delete valid MAC address table 
entries.
Example
Configure the entry aging time of Layer-2 dynamic address table to be 500 
seconds.
<SW4500>sys
System View: return to User View with Ctrl+Z.
[SW4500]mac-address timer aging 500
Device Management 
Commands
This section describes the device management commands available on your Switch 
4500.
boot boot-loader
Syntax
boot boot-loader
 file-path
View
User view
Parameter
file-path:
 Path and name of APP file.
Description
Use the 
boot boot-loader
 command to specify the app file used for booting next 
time.
You can not specify the app file stored in another Unit as the boot application of a 
Unit.
Example
Specify the APP application used for booting next time.
<SW4500>boot boot-loader unit1>flash:/PLATV100R002B09D002.APP The 
specified file will be booted next time!
<SW4500>
boot bootrom
Syntax
boot bootrom file-path