User guide

SUMMIT SWITCH INSTALLATION AND USER GUIDE 1-5
S UMMARY OF F EATURES
¥ It helps to control broadcast trafÞc. If a device in VLAN marketing transmits a
broadcast frame, only VLAN marketing devices receive the frame.
¥ It provides extra security. Devices in VLAN marketing can only communicate with
devices on VLAN sales using a device that provides routing services.
¥ It eases the change and movement of devices on networks. If a device in VLAN
marketing is moved to a port in another part of the network, all you must do is
specify that the new port belongs to VLAN marketing.
For more information on VLANs, refer to Chapter 5.
SPANNING TREE PROTOCOL (STP)
The Summit supports the IEEE 802.1D Spanning Tree Protocol (STP), which is a
bridge-based mechanism for providing fault tolerance on networks. STP enables you to
implement parallel paths for network trafÞc, and ensure the following:
¥ Redundant paths are disabled when the main paths are operational.
¥ Redundant paths are enabled if the main trafÞc paths fail.
The Summit supports up to 64 Spanning Tree Domains (STPDs).
For more information on STP, refer to Chapter 7.
QUALITY OF SERVICE (QOS)
The Summit has Quality of Service (QoS) features that enable you to specify service
levels for different trafÞc groups. By default, all trafÞc is assigned with the ÒnormalÓ
QoS proÞle. If needed, you can conÞgure some trafÞc to have different guaranteed
minimum bandwidth, maximum bandwidth, and priority.
For more information on Quality of Service, refer to Chapter 8.
SUMMIT.BK Page 5 Thursday, September 25, 1997 12:33 PM