Cisco Systems ASR 901 10G manual Air Flow Guidelines, Method of Procedure

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Chapter 2 Preparing to Install the Router

Site Planning

–5% to 85% RH

Note For an outside plant installation (cell site cabinet, hut, etc.), it is required that the router be protected against airborne contaminants, dust, moisture, insects, pests, corrosive gases, polluted air or other reactive elements present in the outside air. To achieve this level of protection, it is recommended that the unit is installed in a fully sealed (i.e. Closed Loop) enclosure. Examples of such cabinets include IP65 cabinets with heat exchanger, complying with Telecordia GR487.

Air Flow Guidelines

To ensure adequate air flow through the equipment rack, we recommend that you maintain a clearance of at least 6 inches (15.24 cm) on each side of the rack at all times.

Caution If air flow through the equipment rack and the routers that occupy it is blocked or restricted, or if the ambient air being drawn into the rack is too warm, an over temperature condition can occur within the rack and the routers that occupy it.

The site should also be as dust-free as possible. Dust tends to clog the router fans, reducing the flow of cooling air through the equipment rack and the routers. Thus, increasing the risk of an over temperature condition.

Use the following guidelines to plan your equipment rack configuration:

•Mount the Cisco ASR 901 10G router in a 19-inch rack (with a 17.5- or 17.75-inch opening).

•Beside air flow, you must allow clearance around the rack for maintenance.

•Enclosed racks must have adequate ventilation. Ensure that the rack is not congested, because each router generates heat. An enclosed rack should have louvered sides and a fan to provide cooling air. Heat that is generated by equipment near the bottom of the rack can be drawn upward into the intake ports of the equipment above.

•When mounting a chassis in an open rack, ensure that the rack frame does not block the intakes or (on the left side of the chassis) or the exhaust (on the right side of the chassis).

•When a rack-installed equipment fails, especially equipment in an enclosed rack, try making the equipment operate by itself, if possible. Power off other equipment in the rack (and in adjacent racks) to give the router a maximum of cooling air and clean power.

Method of Procedure

Part of site preparation includes reviewing installation plans or method of procedures (MOPs). An example of a MOP that includes pre-installation checklist of tasks, considerations to address and agree upon before proceeding with the installation, is as follows:

1.Read this hardware installation guide.

2.Assign personnel.

3.Determine protection requirements for personnel, equipment, and tools.

4.Evaluate potential hazards that may affect service.

5.Schedule time for installation.

Cisco ASR 901 10G Series Aggregation Services Router Hardware Installation Guide

 

OL-28105-02

2-5

 

 

 

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Contents Cisco Systems, Inc Page N T E N T S Site Environment Formatting Flash Memory as a DOS File System Alarm Port Pinouts B-8 Revision Date Change Summary Document Revision HistoryConventions ObjectivesAudience OrganizationRelated Documentation Safety WarningsOL-28105-02 Hardware Description IntroductionCisco ASR 901 10G Router-Front View of TDM Version Cisco ASR 901 10G Router-Front View of Ethernet Version Cisco ASR 901 Router-Front View of Ethernet Version Cisco ASR 901 10G Router-Rear ViewPower Supply Safety PrecautionsLEDs Specification Value Cisco ASR 901 10G Router AC Power Supply Specifications Pin Connector a Connector B Environmental Monitoring Temperature SensorSystem Specifications Description SpecificationRouter Interface Numbering Cisco ASR 901 10G Router Interface Number Location Label Regulatory ComplianceChapter Safety with Equipment Safety Guidelines Safety with Electricity Preventing Electrostatic Discharge Damage Site Environment Power Supply ConsiderationsPrerequisites Site PlanningAir Flow Guidelines Method of ProcedureRequired Tools and Equipment Unpacking and Checking the Contents of your ShipmentTask Verified by Installation ChecklistTask Verified by Date Console Port ConsiderationsCreating a Site Log Console Port ConnectionsPreparing to Install the Router Console Port Considerations OL-28105-02 Network Modules Installing the Cisco ASR 901 10G RouterMounting the Cisco ASR 901 10G Router Rack-Mounting Configuration GuidelinesRack-Mounting Brackets Attaching Brackets to the RouterAttaching Brackets for 19-Inch Racks Attaching Brackets for 23-Inch Racks Attaching Brackets for Etsi Racks Wall-Mounting Mounting the Cisco ASR 901 10G Router in a RackMounting the Router on a Wall Attaching Brackets for Wall-MountingUser-supplied screws Grounding the Cisco ASR 901 10G Router Connecting the Chassis Ground and PowerStripping a Ground Wire Power Connection Compliance Wiring the DC-Input Power Source 10 3-Pin Terminal Block Installing the DC Power Cord RetainerDC power cord 13 Inserting the Retainer through the Lanced Loop Installing the AC Power Cord RetainerSleeve for thin power cords AC power cord Installing SFP Modules Installing and Removing SFP Modules18 SFP Module with a Bale-Clasp Latch Removing SFP Modules Console Port Connecting CablesConnecting the Console Port Types of RJ-45 CablesConnecting the Network Cables Connecting Gigabit Ethernet Interface CablesConnecting T1 and E1 Interface Cables Connecting SFP Cables Connecting Cables to the Bits InterfaceConnecting GPS Cables Connecting to Alarm Port Connecting to the Management Ethernet PortDressing Router Cables Interpreting Front-Panel LEDs Powering on the RouterChecklist for Power on Power-On ProcedureCopying Files Formatting Procedures for Flash MemoryFile and Directory Procedures Formatting Flash Memory as a DOS File SystemDeleting Files from the Flash Memory Displaying Contents of the Flash MemoryEnter a Directory and Determine the Current Directory Displaying File ContentWhat to Do After Installing the Hardware Problem Solving TroubleshootingTroubleshooting the Power and Cooling Systems Environmental Reporting FeaturesSymptom Possible Cause Corrective Action Information Packet publication Troubleshooting Cables and ConnectionsReading the LEDs Chassis LEDsColor/State Location Description Color/State Description two LEDs for each T1/E1 port T1/E1 Interface LEDsSFP Ethernet Interface LEDs 10G SFP+ Ethernet Interface LEDsRJ-45 Ethernet Interface LEDs Gigabit Ethernet Connector Pinouts Cable SpecificationsSFP and SFP+ Port Pinouts and Cable Specifications Pin FE Signal GE SignalT1/E1 Port Pinouts Pin Signal Name Direction Description Console Port Signals and PinoutsConsole Port Signals and Pinouts Pin Signal Name HP Pins Direction DescriptionRJ-45-to-DB-9 Terminal Adapter Console Terminal Adapter Device Signal RJ-45 Pin DB-25 Pin Identifying a Rollover CableConsole RJ-45-to-DB-25 Port DTE Time of Day Pinouts Bits Port Pinouts10 Mhz GPS Port PinoutsPin Signal Name Description Alarm Port PinoutsAuxiliary Port Management Ethernet Port PinoutsOL-28105-02 Site Log Initials DateNumerics IN-2 IN-3 IN-4
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