3Com Switch 7750 Configuration Guide Guide

90 CHAPTER 10: VLAN CONFIGURATION
A VLAN only supports one broadcast storm suppression mode at one time. If you
configure broadcast storm suppression modes multiple times for a VLAN, the
latest configuration will overwrite the previous configuration.
Different cards on the Switch 7750 Family support different broadcast storm
suppression modes, as listed in
Table 40.
n
Type A cards include: 3C16860, 3C16861, 3C16858, 3C16859, 3C16873,
3C16874, 3C16857, 3C16857R, and 3C16872.
Basic VLAN Interface
Configuration
Configuration prerequisites
Create a VLAN before configuring a VLAN interface.
Configuration procedure
Note that the operation of enabling/disabling a VLAN interface does not influence
the enabling/disabling states of the Ethernet ports belonging to this VLAN.
By default, a VLAN interface is enabled. In this scenario, the VLAN interface’s
status is determined by the status of its ports, that is, if all the ports of the VLAN
interface are down, the VLAN interface is down (disabled); if one or more ports of
the VLAN interface are up, the VLAN interface is up (enabled).
Enter VLAN view vlan vlan-id -
Set VLAN broadcast storm
suppression
broadcast-suppression {
ratio | pps pps }
Required
Tabl e 40 Broadcast storm suppression modes and card types
VLAN broadcast storm
suppression mode
Type A cards Other cards
VLAN pps suppression Supported Not supported
VLAN bandwidth ratio
suppression
Supported Not supported
Table 39 Configure VLAN broadcast storm suppression
Operation Command Description
Tabl e 41 Basic VLAN interface configuration
Operation Command Description
Enter system view system-view -
Create a VLAN interface and
enter VLAN interface view
interface Vlan-interface
vlan-id
Required
The vlan-id argument ranges
from 1 to 4,094.
Specify the description string
for the current VLAN interface
description text
Optional
By default, the description
string of a VLAN interface is
the name of this VLAN
interface
Disable the VLAN interface shutdown Optional
By default, a VLAN interface is
enabled.
Enable the VLAN Interface undo shutdown