Cisco Systems 7500 Series manual Dual CyBus Backplane in the Cisco

Chapter 1 Cisco 7500 Series Product Overview

Cisco 7507 Overview

Figure 1-6			Dual CyBus Backplane in the Cisco 7507
	Interface		RSP	Interface
	processor	slots 2		processor
	slots 0 and 1	and 3		slots 4–6

SLOT 0 SLOT 1 SLOT 2

CyBus 0

SLOT 3

SLOT 4

SLOT 5 SLOT 6

H3886

CyBus 1

An RSP2, RSP4/4+, RSP8, or RSP 16 in either slot 2 or slot 3 controls both CyBus 0 and CyBus 1. The dual CyBus backplane in the Cisco 7507 has an aggregate bandwidth of 2.134 Gbps. The two CyBuses are independent of one another. Interface processors connected to one CyBus are unaffected by the traffic generated by the interface processors connected to the other.

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 five 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.

Cisco 7500 Series Installation and Configuration Guide

OL-5008-03 B0 1-9