User`s guide

97
Chapter 5
Configuring Virtual LANs and
Quality of Service
This chapter contains the procedures for creating and modifying VLANs.
It also explains the Quality of Service (QoS) feature. This chapter contains
the following sections:
❑ Creating a New VLAN on page 98
❑ Modifying a VLAN on page 105
❑ Deleting a VLAN on page 106
❑ Activating or Deactivating the Basic VLAN Mode on page 107
❑ Assigning the CPU Management Port to a VLAN on page 110
❑ Configuring Quality of Service on page 108
Note
For background information on VLANs, refer to Appendix A,
Introduction to Virtual LANs on page 139.
The default VLAN configuration for an AT-8300 stack is one VLAN. This
VLAN is named Default VLAN. The Default VLAN has a VLAN ID of 1. All
the ports of all the switches in the stack are port-based (untagged)
members of the Default VLAN and are assigned a PVID of 1. Thus, all
ports in the stack are on a common broadcast domain. A stack can
support up to 254 VLANs. In most situations, you will probably find this
single broadcast domain settings acceptable and will not need to
modify the switch’s VLAN settings.
Note
You should use caution when using the Spanning Tree Protocol
(STP) and VLANs. The switch has only one spanning tree domain.