Appendix A Troubleshooting

Reading the LEDs

Reading the LEDs

The following sections describe the LEDs on the Cisco ASR 901 router.

Chassis LEDs

T1/E1 Interface LEDs

Chassis LEDs

Table A-4summarizes the LEDs on the chassis of the Cisco ASR 901 router. These LEDs are common to all versions of the Cisco ASR 901 router.

Table A-4

LED Summary

 

 

 

 

 

 

 

 

 

 

 

 

 

Copper GE ports (from GE/FE Quad PHY) contain will have Two LEDS each

 

 

 

 

 

 

 

 

 

 

RJ-45

Link

 

Solid Green

PHY

Link with no activity

 

 

 

 

 

 

 

 

 

 

L

 

 

FLASH Green

 

Link with activity

 

 

 

 

 

 

 

 

 

 

 

 

 

Off

 

No link

 

 

 

 

 

 

 

 

 

 

RJ-45

Speed

 

Green

PHY

Speed 1000

 

 

 

 

 

 

 

 

 

 

S

 

 

Off

 

off

 

 

 

 

 

 

 

 

 

 

 

 

 

T1/E1 ports contain Two LEDs each

 

Alarm

AL

Active

C

Off

WP2

Not configured

 

 

 

Yellow

 

Alarm Condition

Off

WP2

Out of Service / Not configured

 

 

 

Green

 

Carrier Condition (all-ok)

 

 

 

Copper GE (from Quad combo PHY) ports contain Two LEDS each.

RJ-45

Link

Solid Green

 

PHY

Link with no activity

 

 

 

 

 

L

 

FLASH Green

 

Link with activity

 

 

 

 

 

 

 

 

Off

 

 

No link

 

 

 

 

 

 

RJ-45

Speed

Green

 

PHY

Speed 1000

 

 

 

 

 

 

S

 

Off

 

 

off

 

 

 

 

 

 

 

 

 

System LED

 

System

Off

Alternating Green/Off

Solid Green

Solid Red

HP

No power or unit not boot-up

POST in progress

System Healthy (normal operation)

System Faulty

SFP LED

SFP Link-Active

L-A

Orange

Off

HP

Link and Active Indicator

Not Enabled

Cisco ASR 901 Series Aggregation Services Router Hardware Installation Guide

 

A-4

OL-23778-01

 

 

 

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Cisco Systems ASR 901 manual Reading the LEDs, Chassis LEDs, Copper GE from Quad combo PHY ports contain Two Leds each

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.