Small To Medium-Sized Network - Cisco 3032 Software Configuration Manual

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Expanded Data Center

Small to Medium-Sized Network

switch stack with high-speed connections to two routers. For network reliability and load-balancing, this

network has HSRP enabled on the routers and on the switches. This ensures connectivity to the Internet,

WAN, and mission-critical network resources in case one of the routers or switches fails. The switches

are using routed uplinks for faster failover. They are also configured with equal-cost routing for load

sharing and redundancy. A Layer 2 switch stack can use cross-stack EtherChannel for load sharing.

The switches are connected to local servers. The server farm includes a call-processing server running

Cisco CallManager software. Cisco CallManager controls call processing and routing. The switches are

interconnected through Gigabit interfaces.

This network uses VLANs to logically segment the network into well-defined broadcast groups and for

security management. Data and multimedia traffic are configured on the same VLAN. Voice traffic is

configured on separate VVIDs. If data, multimedia, and voice traffic are assigned to the same VLAN,

only one VLAN can be configured per wiring closet.

When an end station in one VLAN needs to communicate with an end station in another VLAN, a router

or Layer 3 switch routes the traffic to the destination VLAN. In this network, the switch stack is

providing inter-VLAN routing. VLAN access control lists (VLAN maps) on the switch stack or switch

provide intra-VLAN security and prevent unauthorized users from accessing critical areas of the

In addition to inter-VLAN routing, the multilayer switches provide QoS mechanisms such as DSCP

priorities to prioritize the different types of network traffic and to deliver high-priority traffic. If

congestion occurs, QoS drops low-priority traffic to allow delivery of high-priority traffic.

Cisco CallManager controls call processing and routing. Users with workstations running Cisco

SoftPhone software can place, receive, and control calls from their PCs. Using Cisco CallManager

software and Cisco SoftPhone software integrates telephony and IP networks, and the IP network

supports both voice and data.

shows a configuration for a network of up to 500 employees. This network uses a Layer 3

Cisco Catalyst Blade Switch 3130 and 3032 for Dell Software Configuration Guide

Network Configuration Examples

6500 switches

Catalyst 6500

multilayer switches

Blade switch

switch stacks

Blade server

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