Cisco - Router Architecture

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All rights reserved. Printed in USA. scr Cx Bus Arbiter 70 35 Cisco 70x0—RSP7000 Dual UART EEPROM Boot ROM Envm Logic NVRAM DRAM I/O Bus CI Board PCMCIA Diag Bus Intf Logic Register FPGA Diag Bus FPGA Boot Flash RSP7K Sys Ctrl ASICs R 4600 CPU Bus SRAM MemD Ctrl ASICs QA ASIC Diag Bus Cx Bus Fan Tray 601 1094_06F9_c4 IP/VIP IP / VIP Cx Bus Arbiter 71 © 1999, Cisco Systems, Inc. Cisco 75xx Series Dual UART NVRAM I/O Bus Boot ROM RSP PCMCIA Register FPGA Diag Bus FPGA Boot Flash Sys Ctrl ASICs DRAM Layer 2 Cache R 4600 R 4700 R 5000 CPU Bus MemD Ctrl ASICs SRAM QA ASIC Diag Bus Cy Bus 1 Cy Bus 0 IP/VIP 601 1094_06F9_c4 IP/VIP Cy Bus Arbiter © 1999, Cisco Systems, Inc.

Printed in USA. scr 82 41 “Lane Control” B A D C B A C B A D D A B C C D 601 1094_06F9_c4 83 © 1999, Cisco Systems, Inc. All Destinations Have a Lane B A D C B A C B A D D A B C C No interface (Outbound) Can affect another Interface D 601 1094_06F9_c4 © 1999, Cisco Systems, Inc. Copyright © 1998, Cisco Systems, Inc. All rights reserved. Printed in USA. scr 84 42 Virtual Input Queuing CPU FIFO C FIFO B C Interface C A Delayed/ Dropped B Interface Congested C Interface Shared Memory 601 1094_06F9_c4 85 © 1999, Cisco Systems, Inc.

Cisco 160x Series WIC Boot ROM WIC Slot Console I/O Buses Serial CSU/DSU BRI S/T, U 601 1094_06F9_c4 M 68360 SCC CPU Bus NVRAM CPU PCMCIA DRAM SIMM On Board DRAM Ethernet 59 © 1999, Cisco Systems, Inc. Cisco 25xx Series Async 2509-2512 Hub Ports 2505, 2507 2516 Dual UART M 68030 Sys Ctrl ASIC CPU Bus Mgmt Card 2517-2519 Daughter and Hub Cards WIC Slots 2524, 2525 System Bus WIC Boot ROM NVRAM PCMCIA Flash Ether/TR WAN Intf 601 1094_06F9_c4 On Board DRAM © 1999, Cisco Systems, Inc. Copyright © 1998, Cisco Systems, Inc.

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