Chapter 1

Introduction

Router Interface Numbering

Router Interface Numbering

Each network interface on a Cisco ASR 901 router is identified by a slot number and a port number, explained in this sequence:

•Logical slot numbers starts from 0 for all built-in interfaces. The numbering format is Interface type Slot number/Interface number. Interface (port) numbers begin at logical 0 for each interface type.

•Logical interface numbering for T1/E1 ports on the TDM interface module runs from 0/0 through 0/15. Ports are numbered bottom to top, left to right.

•Logical interface numbering for the built-in ethernet ports runs from g0/0 through g0/3, the combo ports run from g0/4 to g0/7 and the SFP ports run from g0/8 through g0/11. The GE ports are numbered bottom to top, left to right.

Figure 1-5 Cisco ASR 901 Router Port Numbers

B

A

24V

- 60V

 

 

 

 

 

3A

 

 

1

 

 

-

+

 

 

2

 

 

 

 

 

 

 

 

 

 

 

3

 

-

+

 

 

 

 

 

 

 

 

 

TOD

 

 

 

 

T1/E1

 

 

 

 

10

ALARM

 

 

 

 

9

10

 

 

 

 

 

 

 

GE

NG-MRW

 

 

8

7

 

COMBO

 

 

 

6

SFP

SYSTEM

 

 

 

 

5

 

4

282343

1

ToD Port

6

BITS Port

 

 

 

 

2

Management Port

7

MINI-Coax Connector (1PPS)

 

 

 

 

 

3

8

SFP Ports

8

MINI-Coax Connector (10MHZ)

 

 

 

 

 

4

8

GE Ports

9

16 T1/E1 Ports

 

 

 

 

5

Console Port

10

Power Connector

 

 

 

 

 

 

 

 

 

Table 1-4

Cisco ASR 901 Router Interface Labels

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Interface

 

Number

Location

Label

 

 

 

 

 

 

 

 

 

 

 

 

RJ45 jacks for copper ethernet ports

8

Onboard

100/1000 ETHERNET

 

 

 

 

 

 

 

 

 

 

 

 

SFP connector for optical GE ports

8

Onboard

Fiber ETHERNET

 

 

 

 

 

 

 

 

 

 

 

 

RJ45 connector for console

1

Onboard

CON/AUX

 

 

 

 

 

 

 

 

 

 

 

 

RJ45 jack for BITS interface

1

Onboard

BITS

 

 

 

 

 

 

 

 

 

 

 

 

RJ45 jack for Time-of-Day interface

1

Onboard

TOD

 

 

 

 

 

 

 

 

 

 

 

 

1PPS mini-coax timing connector

1

Onboard

1PPS

 

 

 

 

 

 

 

 

 

 

 

 

10Mhz mini-coax timing connector

1

Onboard

10MHZ

 

 

 

 

 

 

 

 

 

 

 

 

Cisco ASR 901 Series Aggregation Services Router Hardware Installation Guide

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1-8

 

 

 

 

 

 

OL-23778-01

 

 

 

 

 

 

 

 

 

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Image 18
Cisco Systems ASR 901 manual Router Interface Numbering, Interface Number Location Label
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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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