Cisco 6200 Manual de usuario descargar pdf (Pagina 4)

1 Hardware Description 78-5296-02 10/02/98

Cisco 6200 User Guide1-4

Figure 1-2 Cisco 6200 Chassis, Rear View

Primary (A) and Secondary (B) H-Buses

The backplane’s primary and secondary H-buses (horizontal buses) link the MPC, NTC, and SLCs.

In this release, the primary bus carries all trafﬁc. The buses operate at 160 Mbps total throughput.

Each H-bus has two parts:

• A downstream component broadcasts all cells received from the NTC interface to each SLC.

(Logic on the SLC ﬁlters and directs cells destined for each port.)

• An upstream component provides a contention mechanism for cells received from subscriber

ports to be funneled into the upstream NTC path.

Ethernet Management Bus

A 10Base2-type Ethernet bus in the backplane carries internal management trafﬁc between the cards.

12686

Auxiliary port

connector

Alarm relay

connector

Dangler cables

for subscriber

traffic

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Cisco 6200 Manual de usuario Pagina 4