IBM OPTIONS ATM OC-3c, Руководство пользователя

Страница: 38 / 140

5-2 C
HAPTER
5: N
ETWORK
C
ONFIGURATION
E
XAMPLES
Campus Configuration
The section gives an example of ATM within a campus
environment. The diagram shown in Figure 5-2 on
page 5-3 demonstrates a balance between cost and
performance requirements.
Building A shows how you can concentrate IBM
8721 Nways Ethernet LAN Switch Model 612 and
624 devices using an IBM 8271 Nways Ethernet LAN
Switch Model 712. All traffic internal to Building A is
switched over Fast Ethernet. In addition, an ATM link
to the campus backbone provides high speed access
to remote services.
Building B shows how you can configure a building
in a cost efficient manner, while retaining connectivity
to the campus ATM network.
Only one ATM Module is required to connect the IBM
8271 Nways Ethernet LAN Switch Model 624 and
Switch Model 524 devices to the ATM network. This
provides connectivity for 48 Ethernet ports to the ATM
backbone.
Building C shows you a building similar to Building A,
but with additional campus-wide, high performance
access to directly connected ATM servers.