Nortel Networks 207344-B manual Desktop Switch and Frame-to-Cell Converter, Wiring Closet

Using the Centillion EtherSpeedII Switch Modules

Desktop Switch and Frame-to-Cell Converter

For wiring closets with higher densities and lower bandwidth requirements, you can use the EtherSpeedII 10/100BASE-T switch module to aggregate traffic from other stackable switch products such as the BayStack™ 301 and BayStack 350T switches (providing frame switching) to an ATM backbone (providing cell switching). The stackable switches and the 20 RJ-45 10/100 Mb/s switched Ethernet ports on the EtherSpeedII 10/100BASE-T switch module provide desktop connectivity.

Figure 2-7 shows a network with EtherSpeedII 10/100BASE-T switch modules used to connect BayStack 301 and BayStack 350T switches to the Centillion 50/ 100 chassis in a data center. The 10/100 Mb/s ports on the EtherSpeedII switch module provide high-speed connections to the BayStack switches. The EtherSpeedII switch module provides switched 10 Mb/s or 100 Mb/s capability for higher-bandwidth desktop connectivity. You can upgrade to 100 Mb/s with a client NIC upgrade.

Data Center

Centillion 100 Chassis

100 Mb/s	ATM
Server

Centillion 100 Chassis

100 Mb/s

Server

Wiring Closet ATM ATM

100 Mb/s

BayStack 301

switch

Centillion 100 Chassis with EtherSpeedII modules and ATM MDA MCP switch modules

100 Mb/s

BayStack 350T

switches

10/100 Mb/s clients

9471EB

Figure 2-6. Desktop Switch and Frame-to-Cell Converter

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