Table Of Contents
Cisco 2800 Series Integrated Services Routers Quick Start Guide
Cisco 90-Day Limited Hardware Warranty Terms
Documents, Equipment, and Tools
Items Included with Cisco 2801 Routers
Items Included with Cisco 2811, Cisco 2821, and Cisco 2851 Routers
Wall-Mounting the Router—Cisco 2811 Routers Only
Installing the Router on a Desktop
Connecting the Router to AC Power
Connecting the Router to DC Power
Connecting the Router to Backup Power
WAN, LAN, and Voice Connections
Verify the Front Panel LED Indications
Verify the Hardware Configuration
Initial Configuration Using Cisco Router and Security Device Manager (SDM)
Initial Configuration Using the Setup Command Facility
Initial Configuration Using the Cisco CLI—Manual Configuration
Verify the Initial Configuration
Cisco Product Security Overview
Reporting Security Problems in Cisco Products
Obtaining Technical Assistance
Cisco Technical Support & Documentation Website
Definitions of Service Request Severity
Obtaining Additional Publications and Information
Quick Start Guide
Cisco 2800 Series Integrated Services Routers Quick Start Guide
INCLUDING LICENSE AND WARRANTYRevised: October 11, 2005, 78-16015-071 Cisco 90-Day Limited Hardware Warranty Terms
There are special terms applicable to your hardware warranty and various services that you can use during the warranty period. Your formal Warranty Statement, including the warranties and license agreements applicable to Cisco software, is available on Cisco.com. Follow these steps to access and download the Cisco Information Packet and your warranty and license agreements from Cisco.com.
1.
Launch your browser, and go to this URL:
http://www.cisco.com/univercd/cc/td/doc/es_inpck/cetrans.htm
The Warranties and License Agreements page appears.
2.
To read the Cisco Information Packet, follow these steps:
a.
Click the Information Packet Number field, and make sure that the part number 78-5235-03A0 is highlighted.
b.
Select the language in which you would like to read the document.
c.
Click Go.
The Cisco Limited Warranty and Software License page from the Information Packet appears.
d.
Read the document online, or click the PDF icon to download and print the document in Adobe Portable Document Format (PDF).
Note
You must have Adobe Acrobat Reader to view and print PDF files. You can download the reader from Adobe's website, http://www.adobe.com.
3.
To read translated and localized warranty information about your product, follow these steps:
a.
Enter this part number in the Warranty Document Number field:
78-5236-01C0
b.
Select the language in which you would like to read the document.
c.
Click Go.
The Cisco warranty page appears.
d.
Review the document online, or click the PDF icon to download and print the document in Adobe Portable Document Format (PDF).
You can also contact the Cisco service and support website for assistance:
http://www.cisco.com/en/US/support/
Duration of Hardware Warranty
Ninety (90) days.
Replacement, Repair, or Refund Policy for Hardware
Cisco or its service center will use commercially reasonable efforts to ship a replacement part within ten (10) working days after receipt of a Return Materials Authorization (RMA) request. Actual delivery times can vary, depending on the customer location.
Cisco reserves the right to refund the purchase price as its exclusive warranty remedy.
To Receive a Return Materials Authorization (RMA) Number
Contact the company from whom you purchased the product. If you purchased the product directly from Cisco, contact your Cisco Sales and Service Representative.
Complete the information below, and keep it for reference:
Company product purchased from
Company telephone number
Product model number
Product serial number
Maintenance contract number
2 Overview
The Cisco 2800 series integrated services routers include the Cisco 2801, Cisco 2811, Cisco 2821, and Cisco 2851 routers. These routers differ as follows:
•
Cisco 2801 routers support 2 HWIC/WIC/VIC/VWIC slots capable of supporting double-wide HWICs, 1 WIC/VWIC/VIC slot, 1 VWIC/VIC (voice only) slot, 2 advanced integration modules (AIM), 2 packet voice data modules (PVDMs), 2 Fast Ethernet connections, and 16 ports of IP phone power output.
•
Cisco 2811 routers support 1 single network module enhanced (NME), 4 single or 2 double high-speed WAN interface cards (HWICs), 2 AIMs, 2 packet voice data modules (PVDMs), 2 Fast Ethernet connections, and 24 ports of IP phone power output.
•
In Cisco 2821 routers, the network module slot adds support for a single network module enhanced extended (NME-X), and an additional slot supports an extension voice module (EVM); 3 PVDMs are supported; the LAN ports support 2 Gigabit Ethernet ports; and 36 ports of IP phone power output are available.
•
In Cisco 2851 routers, the network module slot adds support for network module double-wide (NMDs) and network module enhanced extended double-wide (NME-XDs), and the IP phone power output is increased to 48 ports.
Note
A high density extension module (HDEM) operates in the EVM slot on the Cisco 2821 and Cisco 2851 routers. The EVM slot supports additional voice services and density without consuming the network module slot on those routers.
This document provides the minimum necessary information to help you install the router, power it up, and configure a network connection. This document directs you to other documents for the following information:
•
More detailed router installation instructions, descriptions, and specifications
•
Procedures for installing modules, interface cards, power supplies, and memory
Note
The interface numbering on Cisco 2800 series routers is different from the numbering on Cisco 2600 series routers. For more information on interface numbering, see the "Interface Numbering" section.
•
Software configuration
•
Regulatory compliance and safety information
Product Serial Number Location
You may need your product serial number when calling the Technical Assistance Center (TAC).
Figure 1 shows the serial number location for the Cisco 2801 router. The label is located on the rear of the chassis, at the bottom edge, near the lower left corner.
Figure 1 Serial Number Label Location for Cisco 2801 Router
Figure 2 shows the serial number location for the Cisco 2811 router. The label is located on the rear of the chassis, near the top right corner, to the left of the CLEI label.Figure 2 Serial Number Label Location for Cisco 2811 Router
Figure 3 shows the serial number location for the Cisco 2821 router and the Cisco 2851 router. The label is located on the rear of the chassis, near the top right corner, below the CLEI label.
Figure 3 Serial Number Label Location for Cisco 2821 Router and Cisco 2851 Router
Cisco Product Identification Tool
The Cisco Product Identification (CPI) tool provides detailed illustrations and descriptions showing where to find serial number labels on Cisco products. It includes the following features:
•
A search option that allows browsing for models using a tree-structured product hierarchy
•
A search field on the final results page making it easier to look up multiple products
•
Clear identification of end-of-sale products in results lists
The tool streamlines the process of locating serial number labels and identifying products. Serial number information expedites the entitlement process and is important for access to support services.
The Cisco Product Identification tool can be accessed at the following URL:
http://tools.cisco.com/Support/CPI/index.do
3 Documents, Equipment, and Tools
User Documentation
For complete platform documentation, see the following URL:
http://www.cisco.com/univercd/cc/td/doc/product/access/acs_mod/2800/index.htm
All the documents referenced in this quick start guide are available on Cisco.com. See the "Where to Go Next" section. To view or print an online document in its original page format, click the PDF icon.
Translated Versions
http://www.cisco.com/univercd/cc/td/doc/product/access/acs_mod/2800/qsg/index.htm
http://www.cisco.com/univercd/cc/td/doc/product/access/acs_mod/2800/qsg/index.htm
Items Included with Cisco 2801 Routers
Your router package should include the following items in addition to the router:
•
One blue RJ-45-to-DB-9 console cable; one DB-9-to-DB-25 modem adapter
•
Power cord
•
Cisco.com card; Cisco product registration card
•
19-inch (48.26-cm) rack-mount brackets with bracket screws
•
Cable management bracket with one mounting screw
•
Rubber chassis feet for desktop application
•
Cisco 2800 Series and Cisco 3800 Series Regulatory Compliance and Safety Information document
•
Cisco Router and Security Device Manager (SDM) Quick Start Guide document
•
Cisco 2800 Series Integrated Services Routers Quick Start Guide (this document)
Items Included with Cisco 2811, Cisco 2821, and Cisco 2851 Routers
Your router package should include the following items in addition to the router:
•
RJ-45-to-DB-9 console cable and RJ-45-to-DB-25 modem cable for management access
•
Ground lug; AC power cord with AC-powered routers
•
Cisco product registration card; Cisco.com card
•
One pair of rack-mount brackets with screws for 19-inch racks
•
Cable management bracket; optional 23-inch rack mount brackets, if ordered
•
Ethernet cable for LAN interface
•
Cisco 2800 Series and Cisco 3800 Series Regulatory Compliance and Safety Information document
•
Cisco Router and Security Device Manager (SDM) Quick Start Guide document
•
Cisco 2800 Series Integrated Services Routers Quick Start Guide (this document)
Items Not Included
Individual items in this list may be required for your installation:
•
PC running terminal emulation software, or a modem for remote administrative access
•
Cables for WAN interfaces, voice interfaces, additional LAN interfaces, or USB interface
•
Cable ties, number 2 Phillips screwdriver
•
Four screws for installing the router in a rack
•
Other typical equipment, such as channel service unit/data service unit (CSU/DSU); NT1 device for ISDN-BRI S/T; Ethernet hub; USB devices
Note
The onboard USB 1.1 ports support only Cisco-approved and qualified USB devices.
4 Install Chassis
This section contains basic installation procedures. For more detailed installation instructions, see the Cisco 2800 series hardware installation documentation at the following URL:
http://www.cisco.com/univercd/cc/td/doc/product/access/acs_mod/2800/hw/index.htm
Safety Information
The Cisco 2800 and Cisco 3800 Series Integrated Services Routers Regulatory Compliance and Safety Information document contains translations of the warnings that appear in this quick start guide.
For safety information you must know before working on your Cisco router, see the Cisco 2800 and Cisco 3800 Series Integrated Services Routers Regulatory Compliance and Safety Information document that accompanied this device.
Warning Definition
Warning
Before working on a system that has an on/off switch, turn OFF the power and unplug the power cord. Statement 1
Warning
Read the installation instructions before connecting the system to the power source. Statement 1004
Warning
This unit is intended for installation in restricted access areas. A restricted access area can be accessed only through the use of a special tool, lock and key, or other means of security. Statement 1017
Warning
Blank faceplates and cover panels serve three important functions: they prevent exposure to hazardous voltages and currents inside the chassis; they contain electromagnetic interference (EMI) that might disrupt other equipment; and they direct the flow of cooling air through the chassis. Do not operate the system unless all cards, faceplates, front covers, and rear covers are in place. Statement 1029
Warning
Only trained and qualified personnel should be allowed to install, replace, or service this equipment. Statement 1030
Warning
To prevent personal injury or damage to the chassis, never attempt to lift or tilt the chassis using the handles on modules (such as power supplies, fans, or cards); these types of handles are not designed to support the weight of the unit. Statement 1032
Warning
This equipment must be installed and maintained by service personnel as defined by AS/NZS 3260. Incorrectly connecting this equipment to a general-purpose outlet could be hazardous. The telecommunications lines must be disconnected 1) before unplugging the main power connector or 2) while the housing is open, or both. Statement 1043
Warning
Ultimate disposal of this product should be handled according to all national laws and regulations. Statement 1040
Warning
To prevent the system from overheating, do not operate it in an area that exceeds the maximum recommended ambient temperature of 40 deg. Statement 1047
Note
This product requires surge protection to be provided as part of the building installation. To comply with the Telcordia GR-1089 NEBS standard for electromagnetic compatibility and safety, an external Surge Protective Device (SPD) is required at the AC power service equipment (see definition in the NEC).
Installing the Router
Note
Cisco 2800 series routers are normally ordered with modules and interface cards. Before you remove or install any modules or interface cards, see the documents that accompany those items or to the online Cisco 2800 series hardware installation documentation at the following URL:
http://www.cisco.com/univercd/cc/td/doc/product/access/acs_mod/2800/hw/index.htm
For module and interface card compatibility information, see the data sheet for each module and interface card.Warning
Before working on a system that has an on/off switch, turn OFF the power and unplug the power cord. Statement 1
You can set any Cisco 2800 series router on a desktop or install it in a rack. A Cisco 2811 router can also be mounted on a wall or other flat surface. See the applicable instructions in the following sections.
•
Wall-Mounting the Router—Cisco 2811 Routers Only
•
Installing the Router on a Desktop
CautionTo prevent damage to the chassis, never attempt to lift or tilt the chassis by the plastic panel on the front. Always hold the chassis by the metal body.
Rack-Mounting the Router
Cisco 2811, Cisco 2821, and Cisco 2851 routers can be installed in 19- and 23-inch (48.26-cm and 58.42-cm) racks. Cisco 2801 routers can be installed only in 19-inch racks, and cannot be center mounted. Use the standard brackets for mounting the chassis in a 19-inch rack; use the optional larger brackets for mounting the chassis in a 23-inch rack.
You can mount the router in the following ways:
•
Center mounting—Brackets attached in the center of the chassis with only the front panel facing forward
•
Front mounting—Brackets attached at the front of the chassis with the front panel facing forward
•
Rear mounting—Brackets attached at the rear of the chassis with the rear panel facing forward
The brackets are shown in Figure 4, Figure 5, and Figure 6.
Figure 4 Brackets for Rack-Mounting of Cisco 2801 Routers
Figure 5 Brackets for Rack-Mounting of Cisco 2811 Routers
Figure 6 Brackets for Rack-Mounting of Cisco 2821 and Cisco 2851 Routers
Attaching Brackets to the Router for Rack-Mounting
Attach the mounting brackets to the router chassis as shown in Figure 7 through Figure 9, using the screws provided.
CautionDo not overtorque the screws. The recommended torque is 15-18 in-lb (1.7-2.0 N-m).
Attach the second bracket to the opposite side of the chassis. Use a number 2 Phillips screwdriver to install the bracket screws.
CautionYour chassis installation must allow unrestricted airflow for chassis cooling.
Figure 7 Bracket Installation for Front Mounting
Figure 8 Bracket Installation for Rear Mounting
Figure 9 Bracket Installation for Center Mounting with Front Panel Forward
Installing the Router in a Rack
CautionBe sure to leave space above and below each router in a rack to allow for cooling air circulation.
Use two screws for each side (supplied with the rack, not with the router). Suggestion: Start the lower pair of screws first, and rest the brackets on the lower screws while you insert the upper pair of screws.
Tip
The screw slots in the brackets are spaced to line up with every second pair of screw holes in the rack. When the correct screw holes are used, the small threaded holes in the brackets line up with unused screw holes in the rack. If the small holes do not line up with the rack holes, you must raise or lower the brackets to the next rack hole.
Attaching the Cable Management Bracket
The cable management bracket provides attachment points for organizing and routing cables. Attach the cable management bracket to the left or right rack-mount bracket using the screw provided. On rack-mount brackets for Cisco 2821 and Cisco 2851 routers, you can attach the cable management bracket to either the upper or the lower threaded hole. See Figure 10 and Figure 11 for cable management bracket attachment locations.
Figure 10 Attaching the Cable Management Bracket to the Cisco 2801 Router
Figure 11 Attaching the Cable Management Bracket to the Cisco 2811 Router
Wall-Mounting the Router—Cisco 2811 Routers Only
You can mount a Cisco 2811 router on a wall. Cisco 2801, Cisco 2821, and Cisco 2851 routers are not designed for wall-mounting.
Warning
This unit is intended to be mounted on a wall. Please read the wall mounting instructions carefully before beginning installation. Failure to use the correct hardware or to follow the correct procedures could result in a hazardous situation to people and damage to the system. Statement 248
To attach a Cisco 2811 router to a wall or other vertical surface, use the 23-inch (58.42-cm) rack-mount brackets to attach the router to the wall as described in the following sections.
Attaching Brackets to the Router for Wall Mounting
Attach the standard brackets to the chassis as shown in Figure 12, using the four screws provided for each bracket.
Figure 12 Attaching the Brackets for Wall-Mounting a Cisco 2811 Router
Attaching the Router to a Wall
Attach the router to the wall using the brackets previously attached and attachment hardware that you provide as follows:
•
For attaching to a wall stud, each bracket requires two #10 wood screws (round- or pan-head) with #10 washers, or two #10 washer-head screws. The screws must be long enough to penetrate at least 3/4 inch (20 mm) into supporting wood or into a metal wall stud.
•
For hollow-wall mounting, each bracket requires two wall anchors with washers. Wall anchors and washers must be size No. 10.
CautionThe router must be mounted with the power connections oriented downward. Failure to do so could present a fire hazard.
Installing the Router on a Desktop
If you install your Cisco 2800 series router on a desktop, observe the following precautions:
Note
For Cisco 2801 routers, attach the four rubber feet to the bottom of the chassis.
CautionYour chassis installation must allow unrestricted airflow for chassis cooling. For placing the router on a desktop, keep at least 1 inch (2.54 cm) of clear space beside the cooling inlet and exhaust vents.
CautionDo not place any items that weigh more than 10 pounds (4.5 kilograms) on top of the chassis, and do not stack routers on a desktop.
Grounding the Chassis
Warning
This equipment must be grounded. Never defeat the ground conductor or operate the equipment in the absence of a suitably installed ground conductor. Contact the appropriate electrical inspection authority or an electrician if you are uncertain that suitable grounding is available. Statement 1024
Warning
During this procedure, wear grounding wrist straps to avoid ESD damage to the card. Do not directly touch the backplane with your hand or any metal tool, or you could shock yourself. Statement 94
Note
This equipment is suitable for installation in Network Telecommunications Facilities and locations where the NEC applies. The equipment is suitable for installation as part of the Common Bonding Network (CBN).
You must connect the chassis to a reliable earth ground; the ground wire must be installed in accordance with local electrical safety standards.
•
For NEBS-compliant grounding, use size 6 AWG (13 mm2) copper wire and the ground lug provided in the accessory kit.
•
For NEC-compliant grounding, use size 14 AWG (2 mm2) or larger copper wire and an appropriate user-supplied ring terminal with an inner diameter of 1/4 in. (5-7 mm).
•
For EN/IEC 60950-compliant grounding, use size 18 AWG (1 mm2) or larger copper wire and an appropriate user-supplied ring terminal.
Warning
This equipment needs to be grounded. Use a green and yellow 14 AWG ground wire to connect the host to earth ground during normal use. Statement 190
To connect the chassis to a reliable earth ground, perform the following steps:
Step 1
Strip one end of the ground wire to the length required for the ground lug or terminal.
•
For the NEBS ground lug—approximately 0.75 inches (20 mm)
•
For user-provided ring terminal—as required
Step 2
Crimp the ground wire to the ground lug or ring terminal, using a crimp tool of the appropriate size.
Step 3
Attach the ground lug or ring terminal to the chassis as shown in Figure 13, Figure 14, Figure 15, Figure 16, or Figure 17. For a ground lug, use the two screws with captive locking washers provided. For a ring terminal, use one of the screws provided. Tighten the screws to a torque of 8 to 10 in-lb (0.9 to 1.1 N-m).
Note
The Cisco 2801 router is not NEBS-compliant.
Step 4
Connect the other end of the ground wire to a suitable grounding point at your site.
Figure 13 Chassis Ground Connection on Cisco 2801 Chassis
Figure 14 NEBS-Compliant Chassis Ground Connection on Cisco 2811 Chassis
Figure 15 Chassis Ground Connection Using Ring Terminal on Cisco 2811 Chassis
Figure 16 NEBS-Compliant Chassis Ground Connection on Cisco 2821 or Cisco 2851 Chassis
Figure 17 Chassis Ground Connection Using Ring Terminal on Cisco 2821 or Cisco 2851 Chassis
5 Connect Cables
Warning
Only trained and qualified personnel should be allowed to install, replace, or service this equipment. Statement 1030
Warning
The ISDN connection is regarded as a source of voltage that should be inaccessible to user contact. Do not attempt to tamper with or open any public telephone operator (PTO)-provided equipment or connection hardware. Any hardwired connection (other than by a nonremovable, connect-one-time-only plug) must be made only by PTO staff or suitably trained engineers. Statement 23
Warning
This unit is intended for installation in restricted access areas. A restricted access area can be accessed only through the use of a special tool, lock and key, or other means of security. Statement 1017
Warning
Do not work on the system or connect or disconnect cables during periods of lightning activity. Statement 1001
CautionTo comply with Telcordia NEBS GR-1089-Core and EN 300386 requirements, you must use foil twisted-pair cable that is properly grounded at both ends.
Power Connections
This section describes procedures for connecting your router to AC power, DC power, and backup power. See the appropriate subsection:
•
Connecting the Router to AC Power
•
Connecting the Router to DC Power
•
Connecting the Router to Backup Power
Note
Cisco 2801 routers are not designed to connect to DC power.
Warning
Read the installation instructions before connecting the system to the power source. Statement 1004
Note
The installation must comply with all required electrical codes applicable at the installation site.
Connecting the Router to AC Power
If your router uses AC power, connect it to a 15 A, 120 VAC (10 A, 240 VAC) circuit with overcurrent protection. If backup power is required, see the "Connecting the Router to Backup Power" section.
Note
The input voltage tolerance limits for AC power are 85 and 264 VAC.
Warning
AC connected units must have a permanent ground connection in addition to the power cable ground wire. NEBS-compliant grounding satisfies this requirement. Statement 284
Warning
This product requires short-circuit (overcurrent) protection, to be provided as part of the building installation. Install only in accordance with national and local wiring regulations. Statement 1045
Warning
This product relies on the building's installation for short-circuit (overcurrent) protection. Ensure that the protective device is rated not greater than:
120 VAC, 15 A (240 VAC, 10 A). Statement 1005
Connecting the Router to DC Power
If your router has a DC-input power supply, follow the directions in this section for proper wiring. If backup power is required, see the "Connecting the Router to Backup Power" section.
Note
Cisco 2801 routers are not designed to connect to DC power.
DC Wiring Requirements for Cisco 2800 Series Routers
CautionDC return is isolated from the frame (NEBS DC-I).
Warning
This product requires short-circuit (overcurrent) protection, to be provided as part of the building installation. Install only in accordance with national and local wiring regulations. Statement 1045
Warning
This product relies on the building's installation for short-circuit (overcurrent) protection. Ensure that the protective device is rated not greater than:
60 VDC, 20 A. Statement 1005
Warning
Use copper conductors only. Statement 1025
Note
The DC-input power supply does not apply to Cisco 2801 router.
A Cisco 2800 series integrated services router with a DC-input power supply requires copper wire for the power connections. Table 1 and Table 2 summarize the wiring requirements.
You can connect a single DC power source to either the A input or the B input. If there are dual power sources, connect one source to the A input and one source to the B input. Both sources must be the same polarity and voltage.
Wiring Procedure for DC Input
To connect the router to a DC power source, perform the following steps:
Step 1
Remove power from the DC circuit. To ensure that power is removed from the DC circuit, locate the circuit breaker for the DC circuit, switch the circuit breaker to the OFF position, and tape the circuit-breaker switch in the OFF position.
Warning
Before performing any of the following procedures, ensure that power is removed from the DC circuit. Statement 1003
Tip
Secure all power cabling when installing this unit to avoid disturbing field-wiring connections.
Warning
When stranded wiring is required, use approved wiring terminations, such as closed-loop or spade-type with upturned lugs. These terminations should be the appropriate size for the wires and should clamp both the insulation and conductor. Statement 1002
Step 2
Strip the wires to the appropriate length for the terminals. The strip length is 3/16 to 1/4 inch (5 to 6 mm) for Amp number 32957 terminals.
Step 3
Crimp the terminals onto the DC power input and safety ground wires.
Step 4
Remove the plastic covers from the terminal block. Save the covers for reinstallation after you finish wiring.
Step 5
Connect the wires to the terminal block, starting with the safety ground wire. Connect each wire to the appropriate terminal as shown in Figure 18. Tighten the terminal screws to 8.0 ± 0.5 in-lb (0.9 ± 0.05 N-m).
Warning
The illustration shows the DC power supply terminal block. Wire the DC power supply as illustrated. The proper wiring sequence is ground to ground, positive to positive, and negative to negative. The ground wire should always be connected first and disconnected last. Statement 239
Warning
An exposed wire lead from a DC-input power source can conduct harmful levels of electricity. Be sure that no exposed portion of the DC-input power source wire extends from the terminal block plug. Statement 122
CautionDo not overtorque the terminal block screws. The recommended torque is 8.0 ± 0.5 in-lb (0.90 ± 0.05 N-m).
Figure 18 DC Power Connections for Cisco 2800 Series Routers (Typical)
Step 6
Install the plastic covers over the terminals. (See Figure 19 or Figure 20.)
Warning
The safety cover is an integral part of the product. Do not operate the unit without the safety cover installed. Operating the unit without the cover in place will invalidate the safety approvals and pose a risk of fire and electrical hazards. Statement 117
Step 7
Organize and secure the wires using cable ties as shown in Figure 19 or Figure 20. Make sure that the wires do not project above or below the front panel of the router.
Step 8
Turn on power to the DC circuit. Be sure to remove tape used to secure the circuit-breaker switch in the OFF position.
Figure 19 DC Wire Routing and Attachment for Cisco 2811 Routers
Figure 20 DC Wire Routing and Attachment for Cisco 2821 and Cisco 2851 Routers
Approved Scenarios and Scenarios Not Approved for Dual DC Power Supply Configuration
You can connect a single DC power source to either the A input or the B input. If there are dual power sources, connect one source to the A input and one source to the B input. Both sources must be the same polarity (with respect to ground) and voltage (within 0.25 volts). Do not connect -DC grounded and +DC grounded dual sources to Cisco 2811, Cisco 2821, and
Cisco 2851 series integrated services routers.
CautionDual sources with opposite-polarity grounding damage equipment.
In Figure 21, either the positive source terminal or the negative source terminal is tied to ground.
Figure 21 Connecting to One Source Only—Source A or Source B
In Figure 22, source A and source B share common negative terminal connections.
Figure 22 Connecting Source A and Source B with Common Negative Terminals
In Figure 23, source A and source B share common positive terminal connections. This is allowed only if Va equals Vb (within 0.25 V).
CautionWhen connecting source A and source B with common positive terminals, if source A and source B voltages are unequal by more than 0.25 V, the higher-voltage source can discharge into the lower-voltage source through the A- and B- input terminals. Excessive discharging currents through these terminals can cause one or both of the dual input DC power supply's internal A- or B- fuses to open, resulting in lack of redundancy or system failure. When source A and source B are within 0.25 V, discharge current is minimal.
Note
When source A and source B are wired with common negative terminals, as in Figure 22, discharging does not occur and there is no restriction requiring that source A and source B voltages be equal.
Figure 23 Connecting Source A and Source B with Common Positive Terminals
In Figure 24, source A and source B are wired with opposite polarity grounds. Do not use this configuration.
Figure 24 Source A and Source B Wired with Opposite-Polarity Grounds
Connecting the Router to Backup Power
If your router uses the Cisco Redundant Power System (RPS), see the Cisco RPS-675 Hardware Installation Guide for instructions about the power connections. To locate this document, see the "Where to Go Next" section.
CautionBefore connecting the RPS to the router, make sure that either the RPS is in standby mode or the RPS AC power is disconnected. Connecting the RPS to AC power automatically places the RPS in active mode.
Note
The RPS is not supported on Cisco 2801 routers.
WAN, LAN, and Voice Connections
The connections and cables listed in Table 3 are described in detail in the Cisco 2800 series hardware installation documents at the following URL:
http://www.cisco.com/univercd/cc/td/doc/product/access/acs_mod/2800/hw/index.htm
Note
One or two Ethernet cables are typically provided with the router. Additional cables and transceivers can be ordered from Cisco. For ordering information, contact customer service. For cable pinouts, see the Cisco Modular Access Router Cable Specifications document.
Warning
Hazardous network voltages are present in WAN ports regardless of whether power to the router is OFF or ON. To avoid electric shock, use caution when working near WAN ports. When detaching cables, detach the end away from the router first. Statement 1026
Warning
Never install telephone jacks in wet locations unless the jack is specifically designed for wet locations.
Statement 1036
Warning
Never touch uninsulated telephone wires or terminals unless the telephone line has been disconnected at the network interface. Statement 1037
Warning
To report a gas leak, do not use a telephone in the vicinity of the leak. Statement 1039
Warning
Class 1 laser product. Statement 1008
Table 3 summarizes some typical WAN, LAN, and voice connections for the Cisco 2800 series routers.
Table 3 WAN, LAN, and Voice Connections
Port or Connection Port Type, Color Connection CableEthernet
RJ-45, yellow
Ethernet hub or Ethernet switch
Category 5 or later Ethernet
T1/E1 WAN
xCE1T1-PRIRJ-48C/CA81A
RJ-48S, tanT1 or E1 network
External T1 CSU or other T1 equipmentRJ-48 T1/E1
RJ-48S to RJ-48S TE; RJ-48S to RJ-48S NT; RJ-48S to RJ-48S T1' RJ-48S to bare
RJ-48S to BNC; RJ-48S to twinaxial cable
RJ-48S to DB-15
RJ-48S to DB-15 nullT3/DS3/E3 WAN
BNC connector
T3 network, CSU/DSU, or other T3/DS3 equipment
75-ohm coaxial cable
OC3 / STM-1 WAN
SC connector
OC3/STM-1 network or device
Single-mode or multimode optical fiber
Cisco serial
60-pin D-sub, blue
CSU/DSU and serial network or equipment
Cisco serial transition cable that matches the signaling protocol (EIA/TIA-232, EIA/TIA-449, V.35, X.21, or EIA-530)
and the serial port operating mode (DTE or DCE).1Cisco Smart Serial
Cisco Smart compact connector, blue
CSU/DSU and serial network or equipment
ADSL
RJ-11C/CA11A, lavender
Network demarcation device for service provider's DSL interface
RJ-11 straight-through
SHDSL
RJ-11C/CA11A, lavender, RJ-14
Network demarcation device for service provider's DSL interface
RJ-11 straight-through for 2-wire
RJ-14 straight-through for 4-wireT1/E1 digital voice
RJ-48C/CA81A, tan
Digital PBX, ISDN network, CSU/DSU
RJ-48 T1/E1
Analog voice FXS
RJ-11, gray
Telephone, fax
RJ-11; RJ21 if using NM-HDA, straight-through
Analog voice FXO
RJ-11, pink
Central office, analog PBX
Analog voice E&M
RJ-45, brown
Analog PBX
RJ-45
BRI S/T WAN
(external NT1)RJ-45/CB-1D, orange
NT1 device or private integrated network exchange (PINX)
RJ-45 straight-through
BRI U WAN
(built-in NT1)RJ-49C/CA-A11, red
ISDN network
RJ-48 straight-through
56/64-kbps DSU/CSU
8-pin modular, blue
RJ-48S interface in subrate device or network
RJ-48 straight-through
T1/FT1 DSU/CSU
8-pin modular, blue
RJ-48C interface
RJ-48 straight-through
Gigabit Ethernet SFP, optical
LC, color according to optical wavelength
1000BASE-SX, -LX, -LH, -ZX, -CWDM
Optical fiber as specified on applicable data sheet
Gigabit Ethernet SFP, copper
RJ-45
1000BASE-T
Category 5, 5e, 6 UTP
1 See the Cisco Modular Access Router Cable Specifications document for information about selecting these cables.
System Management Connections
The connections described in Table 4 provide system management access.
























































