Cisco Systems ASR 901 T1/E1 Interface LEDs, SFP Ethernet Interface LEDs, Color/State Description

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Appendix A Troubleshooting

Reading the LEDs

T1/E1 Interface LEDs

Table A-5summarizes the LEDs on the T1/E1 interface (available only for A901-12C-FT-D and A901-4C-FT-D).

Table A-5

T1/E1 Port LEDs

 

 

 

LED

Color/State

Description (two LEDs for each T1/E1 port)

 

 

 

Active

Green

Carrier condition—operating without problem

(labeled C,

 

 

Yellow

Loop condition

left LED)

 

 

Off

Out of service or not configured

 

 

 

 

Alarm

Yellow

Alarm condition

(labeled AL,

 

 

Off

No alarm

right LED)

 

 

 

 

 

SFP Ethernet Interface LEDs

Table A-6gives information about the LEDs on the SFP interface.

Table A-6

SFP LEDs

 

 

 

 

 

 

 

LED

 

 

Color/State

Description

 

 

 

 

SFP Link/Active

 

Orange

Link and active indicator

(labeled LINK ACT)

 

 

 

 

Off

Link not enabled

 

 

 

 

 

 

 

 

RJ-45 Ethernet Interface LEDs

Table A-7summarizes the LEDs on the RJ-45 Ethernet interface.

Table A-7

100/1000 Ethernet Port LEDs

 

 

 

LED

Color/State

Description (two LEDs for each 100/1000 Ethernet port)

 

 

 

100/1000

Solid Green

Link with no activity

RJ-45 link

 

 

Flash Green

Link with activity

(labeled L,

 

 

Off

No link detected

left LED)

 

 

 

 

 

100/1000

Green

Speed 1000

RJ-45 speed

 

 

Yellow

Speed 100

(labeled S,

 

 

Off

Off

right LED)

 

 

 

 

 

Cisco ASR 901 Series Aggregation Services Router Hardware Installation Guide

 

OL-23778-01

A-5

 

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Contents Cisco Systems, Inc Page Audience Enter a Directory and Determine the Current Directory Time of Day Pinouts OL-23778-01 Revision Date Change Summary Document Revision HistoryConventions ObjectivesAudience OrganizationRelated Documentation Safety WarningsOL-23778-01 Hardware Description IntroductionCisco ASR 901 Router Front View Cisco ASR 901 Router-Front View Cisco ASR 901 Router Ethernet Version Front ViewFan Grounding Point Lug Cisco ASR 901 Router Rear ViewLEDs Power SupplySafety Precautions Specification ValueRTN Pin Connector aDescription Specification Environmental Monitoring Temperature SensorSystem Specifications Pin Connector BInterface Number Location Label Router Interface NumberingRegulatory Compliance OL-23778-01 Safety with Equipment Safety GuidelinesSafety 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-23778-01 Network Modules Installing the Cisco ASR 901 Mobile Wireless RouterMounting the Cisco ASR 901 Router Rack-Mounting Configuration GuidelinesMounting the Cisco ASR 901 Router in a Rack Attaching the Rack-Mounting BracketsRack-Mounting Brackets section on Attaching the Cable GuidesGrounding the Cisco ASR 901 Router Connecting the Chassis Ground and PowerGrounding Point Stripping a Ground Wire Power Connection Compliance6-Pin Terminal Block Wiring the DC-Input Power SourceInstalling SFP Modules Installing and Removing SFP ModulesRemoving SFP Modules Installing an SFP Module into an SFP Module SlotConnecting the Console Port Connecting CablesConsole Port Types of RJ-45 CablesConnecting Gigabit Ethernet Interface Cables Connecting the Network CablesConnecting T1 and E1 Interface Cables Connecting Cables to the Bits Interface Connecting SFP CablesConnecting GPS Cables Dressing Router Cables Powering On the RouterConnecting to Alarm Port Connecting to the Management Ethernet PortInterpreting Front-Panel LEDs Checklist for Power UpPower-On Procedure Formatting Procedures for Flash MemoryDisplaying Contents of the Flash Memory File and Directory ProceduresCopying Files Deleting Files from the Flash Memory Displaying File ContentEnter a Directory and Determine the Current Directory What to Do After Installing the HardwareOL-23778-01 Problem Solving TroubleshootingEnvironmental Reporting Features Troubleshooting the Power and Cooling SystemsSymptom Possible Cause Corrective Action Information Packet publication Troubleshooting Cables, and ConnectionsSystem LED Reading the LEDsChassis LEDs Copper GE from Quad combo PHY ports contain Two Leds eachColor/State Description two LEDs for each T1/E1 port T1/E1 Interface LEDsSFP Ethernet Interface LEDs RJ-45 Ethernet Interface LEDsOL-23778-01 Gigabit Ethernet Connector Pinouts Cable SpecificationsPin FE Signal GE Signal SFP Port Pinouts and Cable SpecificationsT1/E1 Port Pinouts Console Port Signals and Pinouts Console Port Signals and PinoutsPin Signal Name Direction Description RJ-45-to-DB-9 Terminal Adapter Console Pin Signal Name HP Pins Direction DescriptionIdentifying a Rollover Cable Terminal Adapter Device Signal RJ-45 Pin DB-25 PinConsole RJ-45-to-DB-25 Port DTE Time of Day Pinouts Bits Port PinoutsGPS Port Pinouts 10 Mhz Alarm Port PinoutsPin Signal Name Description Management Ethernet Port PinoutsRxDP RxDN TxDP Not connected TxDN Site Log Initials DateNumerics IN-2 IN-3 IN-4

ASR 901 specifications

Cisco Systems ASR 901 is an advanced aggregation services router that is designed to meet the needs of service providers and enterprise networks. It offers a versatile platform suitable for various deployment scenarios ranging from mobile backhaul and broadband aggregation to IP edge routing. The ASR 901 is known for its compact size, energy efficiency, and robust performance, making it a preferred choice for operators looking to enhance their network infrastructure.

One of the main features of the Cisco ASR 901 is its small form factor, which facilitates installation in space-constrained environments. Its design allows for easy deployment in both indoor and outdoor settings, making it ideal for applications such as cell site backhaul and remote locations. The router supports a wide range of interfaces, including Ethernet and T1/E1, providing flexibility in connecting different network types.

The ASR 901 is built on Cisco's IOS XR software, ensuring a highly reliable and secure operating environment. This software is known for its scalability and robustness, providing operators with the ability to support large numbers of subscribers and high traffic volumes. The router also supports system redundancy features, ensuring continuous service availability and minimizing downtime.

In terms of performance, the Cisco ASR 901 delivers high throughput and low latency, which are crucial for delivering quality services like voice, video, and data. With its support for advanced network technologies such as MPLS and IPv6, the ASR 901 can effectively manage complex networking requirements while accommodating future growth.

Security is also a key consideration with the ASR 901. It includes features such as advanced encryption, access control lists, and intrusion prevention systems, aimed at protecting the integrity of network communications. Moreover, its support for Virtual LAN (VLAN) tagging and Quality of Service (QoS) mechanisms allows for efficient traffic management and prioritization, ensuring that critical applications receive the necessary bandwidth.

Furthermore, Cisco provides comprehensive management tools for the ASR 901, allowing network administrators to easily monitor and configure the router. Features like SNMP and NetFlow enable operators to gain insights into network performance and usage patterns, facilitating proactive management of their environments.

Overall, the Cisco Systems ASR 901 stands out as a powerful and flexible router, designed to meet the evolving demands of modern networks. Its combination of compact design, scalability, and advanced features positions it as an ideal solution for service providers and enterprises seeking reliable and efficient network solutions.
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