Reserve Bandwidth for Advanced Features

Enables the switch to support advanced features by reserving ports as loopback ports. When disabled, you can use all ports on the switch, but advanced features do not work.

When you enable this boot flag, you need to save and reboot with the new configuration.

Before you begin

You must ensure your configuration does not include reserved ports before you enable this feature. If the configuration includes reserved ports after you enable this feature and restart the switch, the switch stops loading the configuration.

About this task

The command parameters apply to this procedure as follows:

high only applies to 5720 Series
low does not apply to 5720 Series
vim does not apply to 5320 Series and 5420 Series

Procedure

Enter Global Configuration mode:

enable

configure terminal
Enable the boot configuration flag:

boot config flags advanced-feature-bandwidth-reservation [low | high | vim]
Save the configuration, and then reboot the switch.

Important

A change to the advanced-feature-bandwidth-reservation boot flag requires a reboot for the change to take effect.
Verify the boot flag configuration:

show boot config flags
Verify that the switch reserved the ports as loopback ports. Reserved ports are not visible in the output of the following command:

show interfaces gigabitEthernet

Example

Enable this feature to the low level.

Switch:1>enable
Switch:1#configure terminal
Enter configuration commands, one per line.  End with CNTL/Z.
Switch:1(config)#boot config flags advanced-feature-bandwidth-reservation low
   Warning: Please note that the configuration for the following ports 1/25-1/26 
            will be removed from the configuration file.   
 Are you sure you want to continue (y/n) ? y    
    Warning: Please save the configuration and reboot the switch
             for this to take effect.
             Flag advanced-feature-bandwidth-reservation is changed to enable (low).