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Overview of Cisco 2800 Series Routers
The Cisco 2800 series of integrated services routers offers secure, wire-speed delivery of concurrent
data, voice, and video services. The modular design of the Cisco 2800 series routers provides maximum
flexibility, allowing you to configure your router to meet evolving needs. The Cisco 2800 series routers
incorporate data, security, and voice services in a single system for fast, scalable delivery of crucial
business applications. The routers offer features such as hardware-based VPN encryption acceleration,
intrusion-protection and firewall functions, and optional integrated call processing and voice mail. The
routers offer a wide variety of network modules and interfaces, voice digital signal processor (DSP)
slots, high-density interfaces for a wide range of connectivity requirements, and sufficient performance
and slot density for future network expansion requirements and advanced applications.
The Cisco 2800 series consists of four versions. The Cisco 2801 routers and Cisco 2811 routers are one
rack unit in height and have two 10/100 LAN ports. The more powerful Cisco 2821 routers and
Cisco 2851 routers are two rack units in height and have two 10/100/1000 LAN ports. The higher-end
router platforms of the Cisco 2800 series offer increased performance, increased slot density including
network module slots ad extension voice module slots and increased inline power output.
Figure
1,
Figure
2, and
Figure 3
Figure 1
Front View of a Cisco 2801 Router
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Copyright © 2004 Cisco Systems, Inc. All rights reserved.
show front views of the Cisco 2800 series routers.

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  • Page 1

    The Cisco 2800 series consists of four versions. The Cisco 2801 routers and Cisco 2811 routers are one rack unit in height and have two 10/100 LAN ports. The more powerful Cisco 2821 routers and Cisco 2851 routers are two rack units in height and have two 10/100/1000 LAN ports.

  • Page 2: Hardware Features

    LED indicators, chassis ventilation, and the internal clock. Product Serial Number Location The serial number label for Cisco 2801 routers is located on the rear of the chassis, along the bottom edge near the lower left corner. (See...

  • Page 3

    The serial number for Cisco 2801 routers is 11 characters long. Note The serial number label for Cisco 2811 routers is located on the rear of the chassis, near the top right corner, to the left of the CLEI label. (See...

  • Page 4

    Hardware Features The serial number label for Cisco 2821 and Cisco 2851 routers is located on the rear of the chassis, near the top right corner, below the CLEI label. (See Figure Figure 6 Serial Number Location on the Cisco 2821 and Cisco 2851 Routers...

  • Page 5: Removable And Interchangeable Modules

    The network modules, extension voice modules, and interface cards fit into slots, located on the front of the chassis on the Cisco 2801 router, and on the rear of the chassis on the Cisco 2811, Cisco 2821, and Cisco 2851 routers; they can be removed and installed without opening the chassis.

  • Page 6

    Default memory—256 MB Maximum memory—1024 MB 1. Cisco 2801 routers have 128 MB of SDRAM soldered onto the system board. You can install a DIMM into the expansion slot to increase memory to the maximum of 384 MB. 2. Cisco 2811 routers can accept one 256 MB and one 512 MB DIMM to provide 768 MB of usable memory.

  • Page 7: Led Indicators

    Cisco 2800 series routers. Cisco 2801 routers are equipped for operation using AC power only. Cisco 2811, Cisco 2821, and Cisco 2851 routers can be equipped for operation using either AC or DC input power by installation of the appropriate chassis power supply. IP phone power is supported if the appropriate AC-input chassis power supply is installed.

  • Page 8

    For LED troubleshooting information, including possible trouble causes and corrective actions, see Table 1 in the “Troubleshooting Cisco 2800 Series Routers” document. Table 5 Summary of Cisco 2801 Series LED Indicators Color Description Location SYS PWR Green Router has successfully booted up and the Front software is functional.

  • Page 9

    FE or GE port operating at 10 Mbps 2 blinks + pause FE or GE port operating at 100 Mbps 3 blinks + pause GE port operating at 1000 Mbps (Cisco 2821 and Cisco 2851 only) L (= Link) Green...

  • Page 10: Chassis Ventilation

    The Cisco 2801 router has a socketed lithium battery. This battery lasts the life of the router under the operating environmental conditions specified for the router, and is not field-replaceable. If the lithium battery in a Cisco 2801 router should fail, the router must be returned to Cisco for repair. Note...

  • Page 11: Chassis Views

    Statement 1015 Chassis Views This section contains views of the front and rear panels of the Cisco 2800 series routers, showing locations of the power and signal interfaces, module slots, status indicators, and chassis identification labels.

  • Page 12

    Cisco 2811 router. Figure 12 shows the rear panel of a Cisco 2811 router. Figure 9 Front Panel of Cisco 2811 Router with AC Input Power and Without IP Phone Power Output OPTIONAL RPS INPUT CONSOLE AUX/ 100-240 V~ 2A...

  • Page 13

    High-speed WAN interface card slot 3 High-speed WAN interface card slot 0 Network module enhanced (NME) slot 1. The network module slot is compatible with Cisco network modules of type NM (network module) and NME (network module enhanced). Overview of Cisco 2800 Series Routers OL-5783-01...

  • Page 14

    Figure 17 shows the rear panel of a Cisco 2851 router. Figure 13 Front Panel of Cisco 2821 and Cisco 2851 Routers with AC Input Power and Without IP Phone Power Output CONSOLE AUX/ COMPACT FLASH Do Not Remove During Network Operation...

  • Page 15

    Screw holes for ground lug High-speed WAN interface card slot 2 1. The network module slot is compatible with Cisco network modules of type NM (network module), NME (network module enhanced), and NME-X (enhanced extended). Overview of Cisco 2800 Series Routers...

  • Page 16: Interface Numbering

    Screw holes for ground lug High-speed WAN interface card slot 2 1. The network module slot is compatible with Cisco network modules of type NM (network module), NME (network module enhanced), NME-X (enhanced extended), NMD (double-wide), and NME-XD (enhanced extended double-wide).

  • Page 17

    1. A VWIC in slots 1, 2, and 3 can operate in both data and voice mode; in slot 0, a VWIC can operate only in voice mode. On the Cisco 2801 router, the numbering format for configuring an asynchronous interface is 0/slot/port. Note To configure the line associated with an asynchronous interface, simply use the interface number to specify the async line.

  • Page 18: Specifications

    3. Interface card slot numbers for double-width (HWIC-D) slots are 1 and 3 only. 4. Specify the line number in the Cisco IOS CLI by using the interface number for the associated asynchronous serial interface. 5. “1” is the network module slot number in all Cisco 2800 series routers.

  • Page 19

    53 dBA for temperatures above 116° F (47° F) Safety compliance UL 60950; CAN/CSA C22.2 No. 60950-00; IEC 60950; EN 60950-1; AS/NZS 60950 For detailed compliance information, refer to the Cisco 2800 and Cisco 3800 Series Integrated Services Routers Regulatory Compliance and Safety Information document. Immunity compliance EN300386;...

  • Page 20

    57 dBA in maximum ambient temperature Safety compliance UL 60950; CAN/CSA C22.2 No. 60950-00; IEC 60950; EN 60950-1; AS/NZS 60950 For detailed compliance information, refer to the Cisco 2800 and Cisco 3800 Series Integrated Services Routers Regulatory Compliance and Safety Information document. Immunity compliance EN300386;...

  • Page 21

    FCC Part 15; ICES-003 Class A; EN55022 Class A; CISPR22 Class A; AS/NZS 3548 Class A; VCCI Class A; EN 300386; EN61000-3-3; EN61000-3-2 For detailed compliance information, refer to the Cisco 2800 and Cisco 3800 Series Integrated Services Routers Regulatory Compliance and Safety Information document.

  • Page 22

    52 dBA in maximum ambient temperature Safety compliance UL 60950; CAN/CSA C22.2 No. 60950-00; IEC 60950; EN 60950-1; AS/NZS 60950 For detailed compliance information, refer to the Cisco 2800 and Cisco 3800 Series Integrated Services Routers Regulatory Compliance and Safety Information document. Immunity compliance EN300386;...

  • Page 23

    FCC Part 15; ICES-003 Class A; EN55022 Class A; CISPR22 Class A; AS/NZS 3548 Class A; VCCI Class A; EN 300386; EN61000-3-3; EN61000-3-2 For detailed compliance information, refer to the Cisco 2800 and Cisco 3800 Series Integrated Services Routers Regulatory Compliance and Safety Information document.

  • Page 24

    52 dBA in maximum ambient temperature Safety compliance UL 60950; CAN/CSA C22.2 No. 60950-00; IEC 60950; EN 60950-1; AS/NZS 60950 For detailed compliance information, refer to the Cisco 2800 and Cisco 3800 Series Integrated Services Routers Regulatory Compliance and Safety Information document. Immunity compliance EN300386;...

  • Page 25: Regulatory Compliance

    Cisco 3800 Series Integrated Services Routers Regulatory Compliance and Safety Information document. Regulatory Compliance For compliance information, refer to the Cisco 2800 and Cisco 3800 Series Integrated Services Routers Regulatory Compliance and Safety Information document that accompanied the router. Overview of Cisco 2800 Series Routers...

  • Page 26

    Regulatory Compliance CCVP, the Cisco logo, and Welcome to the Human Network are trademarks of Cisco Systems, Inc.; Changing the Way We Work, Live, Play, and Learn is a service mark of Cisco Systems, Inc.; and Access Registrar, Aironet, Catalyst, CCDA, CCDP, CCIE, CCIP, CCNA, CCNP, CCSP, Cisco, the Cisco...

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Cisco2851, 2800 series

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