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Cisco 4000 Manual

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C H A P T E R
Overview of the Cisco 4000

Series Routers

The Cisco 4000 series consists of the Cisco 4000-M, the Cisco 4500-M, and the
Cisco 4700-M. All models provide a configurable modular router platform using network
processor modules—individual modules that when installed in the router are ready for
external network connections. Performance is the key distinction between the
Cisco 4000-M, Cisco 4500-M, and Cisco 4700-M.
For maximum performance in the Cisco 4000 series, the Cisco 4700-M contains a
133-MHz RISC microprocessor, 16 to 64 MB main memory, and a 512-KB secondary
cache. The faster speed of the Cisco 4700-M allows higher throughput for high-speed
interfaces. The 512-KB secondary cache is useful for process switching applications such
as compression and encryption.
The Cisco 4500-M contains a 100-MHz RISC microprocessor and 8 to 32 MB of main
memory. The Cisco 4000-M contains a 40-MHz CISC microprocessor and 4 to 32 MB of
main memory.
All Cisco 4000 series routers provide flexibility, allowing network managers to easily
reconfigure the router when needs change.
The Cisco 4000 series routers support up to three network processor modules at a time. The
following network processor modules are available at the publication date of this guide:
•
•
•
•
1
Single-port Fast Ethernet with 100BaseT and MII connectors provided for the port
Single-port and dual-port Ethernet with 10BaseT and AUI connectors provided for each
port
Six-port Ethernet with 10BaseT connectors provided for each port
Dual-port and four-port synchronous serial supporting EIA/TIA-232, EIA/TIA-449,
V.35, X.21, NRZ/NRZI, DTE/DCE, or EIA-530 DTE interfaces on each port
Overview of the Cisco 4000 Series Routers 1-1

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Summary of Contents for Cisco 4000

  • Page 1: Series Routers

    All Cisco 4000 series routers provide flexibility, allowing network managers to easily reconfigure the router when needs change. The Cisco 4000 series routers support up to three network processor modules at a time. The following network processor modules are available at the publication date of this guide: •...
  • Page 2 Note and RS-449 before their acceptance as standards by the Electronics Industries Association (EIA) and Telecommunications Industry Association (TIA) Figure 1-1 shows the front panel of a Cisco 4000 series router. Figure 1-1 Cisco 4000 Series Chassis—Front Panel 1-2 Cisco 4000 Series Installation Guide...
  • Page 3 SERIES DATA DATA DATA POWER Overview of the Cisco 4000 Series Routers 1-3...

  • Page 4: Series Specifications

    T1/ISDN PRI network interface module or the channelized E1/ISDN PRI network interface module. The Cisco 4000-M does not support Fast Ethernet, HSSI, 2T16S, ATM, or six-port Ethernet network processor modules.The Cisco 4000-M can support only one FDDI network processor module in combination with any two other types of network processor modules.
  • Page 5 For complete configuration information, refer to the Cisco Product Catalog, which is available on the Web at http://www.cisco.com. Table 1-1 lists the network processor module interface options available for the Cisco 4000 series when this guide was printed. For current modules, see the configuration note packet that shipped with your router.

  • Page 6: Software Compatibility

    Network processor modules must be supported by the appropriate level of system software. The minimum system software version for the original Cisco 4000 was Software Release 9.1; for the Cisco 4000-M, Software Release 9.14; for the Cisco 4500, and Cisco 4500-M, Cisco Internetwork Operating System (Cisco IOS) Release 10.2; for the Cisco 4700-M, Cisco IOS Release 10.3(10).
  • Page 7 Cisco IOS Release 10.3(4) ATM DS-3 and E3 Cisco IOS Release 11.0(5) The Cisco 4000 can no longer be ordered, but Cisco IOS Releases 10.0, 10.2, and Note 10.3 are supported on installed Cisco 4000 routers. The Cisco 4500 can no longer be ordered, but Cisco IOS Releases 10.1, 10.2, and 10.3 are supported on installed Cisco 4500...
  • Page 8 Series Specifications Table 1-3 lists the processor and memory specifications of the Cisco 4000 series routers. 1-8 Cisco 4000 Series Installation Guide...

  • Page 9: Memory Systems

    2. DRAM = dynamic random-access memory. 3. NVRAM = nonvolatile random-access memory. Memory Systems The Cisco 4000 series memory systems (see Figure 1-2) have the following functions: • Main memory—Stores the running configuration and routing tables. The Cisco IOS software executes from main memory.
  • Page 10 Memory Systems when Flash memory does not contain a valid system image. In the Cisco 4500-M and 4700-M, the ROM monitor allows you to boot a system image from Flash memory if a boot helper image is not present in boot Flash memory.
  • Page 11 Shared Memory Requirements The standard configuration for shared memory is 4 MB for the Cisco 4000 series. 4 MB of memory is enough for most configurations with fewer than 24 physical or virtual interfaces. Routers with multiple ISDN BRI network processor modules or with 24 or more physical and virtual interfaces require 8 to 16 MB of shared memory.
  • Page 12 G.703/G.704 serial Eight-port BRI, CT1/PRI, and 1.0 MB CE1/PRI FDDI 2.0 MB Table 1-5 Cisco 4500-M and Cisco 4700-M Shared Memory Requirements Per-Module Shared Network Processor Module Memory Requirements Dual-port Ethernet and dual-port serial 0.4 MB Single-port Fast Ethernet 1.7 MB...
  • Page 13 Main Memory Requirements The amount of main memory required by a Cisco 4000 series router is affected by the size of the network and by the access list configurations. However, it is difficult to quantify the exact main memory requirements based only on network size.
  • Page 14 Cisco RPS Adapter Plate in Cisco 4000 Routers. This section provides an overview of the Cisco RPS and describes basic features. Figure 1-3 shows the front panel of the Cisco RPS, and Figure 1-4 shows the rear panel. Figure 1-3...
  • Page 15 Figure 1-5. When using one-to-one cables, the power source is quasi-redundant because there are two AC input power modules for the Cisco RPS and one DC power output module for each external device. The AC input to the Cisco RPS is fully redundant, but the DC output to the external devices is not.
  • Page 16 150W or less Fully Redundant Power The Cisco RPS can provide a fully redundant power source for up to two Cisco 4000 series routers. You can use a two-to-one cable to connect up to two external devices to the four DC output power modules on the rear panel of the Cisco RPS, as shown in Figure 1-6.
  • Page 17 Four 150W DC output power modules • Four one-to-one cables (PWR600-AC-RPS-CAB) • Rack-mountable chassis (two rack units in height, 19-inch rack-mount brackets included) • Redundant cooling • LEDs for the AC and DC status, fans, and temperature Overview of the Cisco 4000 Series Routers 1-17...
  • Page 18 Cisco RPS Support 1-18 Cisco 4000 Series Installation Guide...

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4000 series