Cisco 6200 User Manual page 4

1
Hardware Description
Figure 1-2
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.
1-4 Cisco 6200 User Guide
Cisco 6200 Chassis, Rear View
Auxiliary port
connector
78-5296-02 10/02/98
Dangler cables
for subscriber
traffic
Alarm relay
connector