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Catalyst 2940 Switch Software Configuration Guide
78-15507-02
Chapter1 Overview Network Configuration Examples
Wireless Access Point provides network connectivity for mobile users. Although the wireless access
provides less bandwidth, it allows users to have network connectivity regardless of their location in the
office.
A server is connected to the Gigabit ports on the switch, allowing 1 -Gbps thr ough put to u ser s w hen
needed. When the switch and server ports are configured for full-duplex operation, the links provide
2 Gbps of bandwidth. For networks that do not require Gigabit performance from a server, connect the
server to a Fast Ethernet or Fast EtherChannel switch port.
Connecting a router to a Fast Ethernet switch port provides multiple, simult aneous ac cess to the Inte rnet
through one line.
Collapsed Backbone and Switch Cluster Configuration
Figure 1-2 shows a configuration for a network of up to 500 employees. This network u ses a col lap sed
backbone and switch clusters. A collapsed backbone has high-bandwidth uplinks from all segments and
subnetworks to a single device, such as a Gigabit switch, that serves as a single point for monitoring and
controlling the network. You can use a Catalyst 6500 switch, as shown, or other Gigabit switch to create
a Gigabit backbone. A Layer 3 backbone switch provides the benefits of inter-VLAN routing and allows
the router to focus on WAN access.
Note An external power supply is required for IP phones and the Cisco Airon et acc ess poi n t.
Figure1-2 Collapsed Backbone and Switch Cluster Configuration
Catalyst 6500
100-Mbps
(200-Mbps full-duplex
Fast EtherChannel)
Servers
Cisco
CallManager
87790
Cisco 1700 or
2600 router
Catalyst 3550-24FX
Si
M
IP
Catalyst 4500
Core
Wiring Closet
Fiber Links
End-User
Environment
Single workstations Aironet
AccessPoint
Catalyst
2940
Single workstations
Catalyst
2940
Single workstations
Catalyst
2940 IP
IP
Cisco IP Phones
Si
1 Gbps
(2-Gbps full duplex)
Copper Links