Cisco 7500 Series Configuration Manual page 50

Cisco 7576 Overview
An RSP4/4+ or RSP8 in slot 6 controls router A and both CyBus 0 and CyBus 1. An RSP4/4+ or RSP8
in slot 7 controls router B and both CyBus 2 and CyBus 3. The dual CyBus backplane in the Cisco 7576
has an aggregate bandwidth of 2.134 Gbps per router. Interface processors connected to the set of
CyBuses on router A are unaffected by the traffic generated by the interface processors connected to the
set of CyBuses on router B. The dual CyBuses assigned to router A are independent of the dual CyBuses
assigned to router B.
Figure 1-18
Figure 1-18
0
Slots 0, 1, 3, and 5 = CyBus 0
The Cisco 7576 backplane includes connectors for time-division multiplexing (TDM)-compatible
Note
hardware. These connectors allow you to connect the Cisco 7576 to future TDM hardware as it
becomes available.
The backplane slots are keyed so that the processor modules can be installed only in the slots designated
for them. Keys on the backplane fit into two key guides on each module. Although the RSP uses unique
keys, all 11 interface processor slots use the same key, so you can install an interface processor in any
interface processor slot, but not in the RSP slot.
For maintenance information about the card cage assembly, see the
7513, Cisco 7513-MX, and Cisco 7576 Card Cage Assembly" section on page
Cisco 7500 Series Installation and Configuration Guide
1-28
shows the details of the dual CyBus backplane.
Cisco 7576 Dual CyBus Backplane
1 2 3 4 5
Slots 2 and 4 = CyBus 1
Router A
Chapter 1
RSP RSP 8 9 10
A B
Slots 9 and 11 = CyBus 3
Slots 8, 10, and 12 = CyBus 2
Router B
Cisco 7500 Series Product Overview
11 12
"Removing and Replacing the Cisco
7-5.
OL-5008-03 B0