Table of Contents

Cisco 4000 Series Overview

External Differences in Models of the Cisco 4000 Series
System Specifications
Memory Configurations

Cisco 4000 Series Overview

The Cisco 4000 series comprises the original Cisco 4000, the Cisco 4000-M, and the Cisco 4500.

This publication is specific to the orginal Cisco 4000, but includes identification information following to enable you to distinguish which type of system yours is. For information on the Cisco 4000-M and the Cisco 4500, refer the publication Cisco 4000 Series Hardware Installation and Maintenance.

Cisco 4000 series router models provide a configurable modular router platform using network processor modules---individual modules that when installed in the router are ready for external network hardware connections. The Cisco 4000 series provides flexibility, allowing network managers to easily reconfigure the router when needs change.

External Differences in Models of the Cisco 4000 Series

The original Cisco 4000 front panel is labeled Cisco 4000; both the Cisco 4000-M and the Cisco 4500 are labeled Cisco 4000 Series on the front panel. The rear label of the Cisco 4000 reads Cisco 4000, the Cisco 4000-M reads Cisco 4000-M , and the rear label of the Cisco 4500 reads Cisco 4500.

Figure 11 shows the front panel of the original Cisco 4000 router.

Figure 1-1 Original Cisco 4000---Front View

Figure 12 shows the front panel of the memory-enhanced Cisco 4000.

Figure 1-2 Memory-Enhanced Cisco 4000 Series Router---Front View

Table 1-1 Comparison of Cisco 4000 Series Routers

Memory Feature	Memory-Enhanced Cisco 4000	Original Cisco 4000
Main (CPU-Local DRAM)(1)	4, 8, 16, 32 MB	4 or 16 MB
Flash	4 or 8 MB	2 or 4 MB
Shared	4 MB	1 or 4 MB

(1)

CPUCentral Processing Unit. DRAMDynamic random access memory.

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Note This publication takes you through the initial hardware installation and selected maintenance procedures. For initial software configuration and operating information, refer to the Router Products Getting Started Guide or the Router Products Configuration and Reference publication.

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System Specifications

Design specifications follow:

• Modular router platform.
  

• 40-megahertz (MHz) Motorola 68EC030 32-bit microprocessor.
  

• Support for up to three network processor modules at a time, including Ethernet, Token Ring, dual serial, dual Ethernet, and multimode and single-mode Fiber Distributed Data Interface (FDDI) interfaces. Network processor modules can be placed in any of the three available positions in any desired combination. The router can support only one FDDI network processor module in combination with any two other types of network processor modules. For optimum heat dissipation, it is recommended that the FDDI module occupy the center slot position.
  

To successfully operate a multimode FDDI module, the system requires 4 megabytes (MB) of shared memory. The standard shared-memory configuration is 1 MB. For a system that has more than six ports (for example: a system containing dual-Ethernet, four port serial, and dual-serial modules), 4 MB of shared memory is also required.

• Flash memory capability
  

• User-upgradable network processor modules, shared memory, and processor local memory
  

• Jumperless router configurations
  

• Hardware thermal alarm to warn of excessively high operating temperature
  

• Rack-mountable in either a standard 19-inch rack or telco rack
  

• Wall, desktop, or desk-side mountable
  

The Cisco 4000 DC-input power supply is intended for use in DC operating environments.

Table 1-2 Router Specifications

Description	Design Specification
DC-input power	200W, 40 to 72 VDC
Wire gauge for DC-input power connections	16 AWG(1)

(1)

AWGAmerican Wire Gauge

When using stranded wiring for DC power input, terminate the wiring with approved wiring terminations such as closed loop or spade type with upturned lugs of appropriate size for the wires. The lugs must clamp both the insulation and the conductor.

Table 1-3 lists the router specifications.

Table 1-3 Router Specifications

Description	Design Specification
Dimensions (W x D x H)	17.6" x 17.7" x 3.4" (44.7 cm x 45 cm x 8.6 cm)
Weight	24 lb (including the chassis and network processor modules) (10.9 kg)
Power	200W, 85--264 VAC, 50--60 Hz
Processor	40-MHz Motorola 68EC030, 32-bit wide
CPU-Local DRAM	4 or 16 MB
Shared DRAM	1 or 4 MB
Nonvolatile RAM	128 KB
Network Interface Options	Ethernet, Serial, Token Ring, FDDI
Serial Interfaces	RS-232, RS-449, V.35, X.21, NRZ/NRZI, DTE/DCE; EIA-530 DTE
Console Port	RS-232 DB-25 female connector
Auxiliary Port	RS-232 DB-25 male connector
Nonoperating Temperature	-40--185°F (-40--85°C)
Operating Humidity	5--95%, noncondensing
Operating Temperature	32--104°F (0--40°C)

Memory Configurations

The router has the following memory systems:

• Primary memory (main memory)---Stores the running configuration and routing tables
  

• Shared memory---Used for packet buffering by the router's network interfaces
  

• Nonvolatile memory---Stores the system configuration file and the virtual configuration register
  

• Flash memory---Flash Memory---Stores the Internetwork Operating System (IOS). On the original Cisco 4000, Flash memory is implemented in Flash EPROMs on the Flash EPROM card; on the memoryenhanced Cisco 4000, Flash memory is implemented with Flash SIMMs.
  

• Boot ROM memory---Stores a subset of the operating system software image which is called the System Bootstrap image and the Bootstrap Program (ROM Monitor). The System Bootstrap image allows you to boot the router when Flash memory does not contain a valid system image.
  

The boot ROM prompt is as follows: Router(boot)>. The Bootstrap Program (ROM Monitor) prompt is the greater than sign (>).

(See Appendix B "Virtual Configuration Register" and Appendix C "Bootstrap Program.")

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