Cisco ASR 901 User Manual

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Cisco ASR 901 Aggregation Services Router Command Reference Guide
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Chapter 1 CLI Command Reference
negotiation
negotiation
To enable advertisement of speed, duplex mode, and flow control on a Gigabit Ethernet interface, use
the negotiation command in interface configuration mode. To disable automatic negotiation, use the no
negotiation auto command.
negotiation {auto}
no negotiation auto
Syntax Description
Command Default Autonegotiation is enabled.
Command Modes Interface configuration (config-if)
Command History
Usage Guidelines The negotiation auto command is used instead of the duplex and speed commands (which are used on
Ethernet to automatically configure the duplex and speed settings of the interfaces.
The no negotiation auto command is used to disable the autonegotiation. If the speed is set to 1000
Mbps and full-duplex is set for the Gigabit Ethernet interface in small form-factor pluggable (SFP)
mode, then the autonegotiation is disabled (forced mode) using the no negotiation auto command.
Related Commands
auto Enables the autonegotiation protocol to configure the speed, duplex, and
automatic flow control of the Gigabit Ethernet interface. This is the default.
Release Modification
15.1(2)SNG Support for this command was introduced on the Cisco ASR 901 router.
Command Description
show interfaces gigabitethernet Displays information about the Gigabit Ethernet interfaces.

Cisco ASR 901 Specifications

General

Form Factor	Rack-mountable
Operating Temperature	-40 to 65°C
Product Type	Aggregation Services Router
Rack Height	1 RU
Storage Temperature	-40 to 70°C
Humidity	5% to 95% non-condensing
Weight	4.5 kg
Power Supply	AC or DC
Compliance	RoHS, CE, FCC
Redundancy	Dual power supply option
MTBF	320, 000 hours

Summary

About This Guide

Document Revision History

Details technical changes made to the document across various releases.

Objectives

Explains the purpose and scope of the guide for Cisco ASR 901 Series routers.

Audience

Identifies the intended readers for this guide, focusing on networking professionals.

Conventions

Explains typographical conventions used in the document for clarity and consistency.

Related Documentation

Lists other Cisco documentation relevant to the ASR 901 Series router.

Obtaining Documentation and Submitting a Service Request

Provides information on how to access Cisco documentation and submit service requests.

Using Command-Line Interface

Getting Help

Describes how to use the question mark (?) and Tab key for context-sensitive CLI help.

How to Find Command Options

Explains how to display command syntax and find available keywords and arguments.

Understanding Command Modes

Details the different command modes in the Cisco IOS user interface and their access methods.

Using the No and Default Forms of Commands

Explains how to use 'no' and 'default' forms to disable or revert commands.

Saving Configuration Changes

Describes the procedure for saving running configuration changes to the startup configuration.