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Chapter 1 Cisco 7500 Series Product Overview
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 shows the details of the dual CyBus backplane.
Figure 1-18 Cisco 7576 Dual CyBus Backplane
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0 | 1 | 2 | 3 | 4 | 5 | RSP | RSP | 8 | 9 | 10 | 11 | 12 |
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| A | B |
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| Slots 2 and 4 = CyBus 1 |
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| Slots 9 and 11 = CyBus 3 | ||||||
Slots 0, 1, 3, and 5 = CyBus 0 |
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| Slots 8, 10, and 12 = CyBus 2 |
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Router A | Router B |
Note The Cisco 7576 backplane includes connectors for
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 “Removing and Replacing the Cisco 7513, Cisco
Cisco 7500 Series Installation and Configuration Guide
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