Cisco Systems 3750E manual High-Performance Wiring Closet

Chapter 1 Overview

Network Configuration Examples

For high-speed IP forwarding at the distribution layer, connect the switches in the access layer to a Gigabit multilayer switch in the backbone, such as a Catalyst 4500 Gigabit switch or Catalyst 6500 Gigabit switch.

•Cost-effective Gigabit-to-the-desktop (GTD) access for high-performance workgroups

(Figure 1-3)—For high-speed access to network resources, you can use the Catalyst 3560-E switches in the access layer to provide Gigabit Ethernet to the desktop. To prevent congestion, use QoS DSCP marking priorities on these switches. For high-speed IP forwarding at the distribution layer, connect the switches in the access layer to a Gigabit multilayer switch with routing capability, such as a Catalyst 3750-E switch, or to a router.

The first illustration is of an isolated high-performance workgroup, where the Catalyst 3560-E switches are connected to Catalyst 3750-E switches in the distribution layer. The second illustration is of a high-performance workgroup in a branch office, where the Catalyst 3560-E switches are connected to a router in the distribution layer.

Each switch in this configuration provides users with a dedicated 1-Gb/s connection to network resources. Using SFP modules also provides flexibility in media and distance options through fiber-optic connections.

Figure 1-2 High-Performance Wiring Closet

Catalyst

4500 or 6500

multilayer switch

Si

Catalyst 3750-E-only Layer 3 StackWise Plus switch stack

200852

Catalyst 3750-E and 3560-E Switch Software Configuration Guide

OL-9775-02 1-19