Cisco Systems 8xDMT manual Dmt rate-adaptation margin, Min

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Octal-Port DMT ATU-C Line Card

dmt rate-adaptation margin

dmt rate-adaptation margin

To configure the minimum acceptable SNR margins on a DMT port, which force the port to retrain when bad margins exist for the duration of the dmt rate-adaptation interval, use the dmt rate adaptation margin command in DSL profile configuration mode. To disable dmt rate adaptation margin use the no form of this command.

dmt rate-adaptation margin {min [downstream dB upstream dB]}

Syntax Description

Defaults

Command Modes

Command History

Usage Guidelines

min

The min keyword specifies that you are configuring the minimum

 

acceptable SNR margins on a port. If the port SNR exceeds the configured

 

value, the port retrains to a lower bit rate.

 

 

downstream

Specifies the minimum acceptable SNR margin for downstream traffic on

 

a port.

 

 

dB

SNR margins measured in decibels. The valid range is –15 to 15.

 

 

upstream

Specifies the minimum acceptable SNR margin for upstream traffic on

 

a port.

 

 

dB

SNR margins measured in decibels. The valid range is -15 to 15.

 

 

The default configuration is derived from the no dmt rate-adaptation enable command. This specifies minimum upstream and downstream SNR margins of 0 dB.

DSL profile configuration

ReleaseModification

IOS 12.1(6)DA

This command was introduced.

 

 

Use the dmt rate-adaptation margin command to configure the acceptable SNR margin thresholds on a specified port. The dmt rate-adaptation margin command works in conjunction with the

dmt rate-adaptation interval command. If the actual SNR margins on a port remain lower than the margins configured in the dmt rate-adaptation margin command, for the duration of time specified in the dmt rate-adaptation interval command, the line drops and retrains to a lower bit rate, to improve SNR margin quality on the line.

Note If line conditions improve, the line does not automatically drop and retrain to a higher bit rate. If the line conditions improve, the administrator must execute a shut then a no shut on the affected port to retrain to a higher bit rate.

Cisco IOS Release 12.1(6)DA

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Contents Feature Overview Octal-Port DMT ATU-C Line CardHs Support ITU G.994.1 Bit SwappingFast or Interleaved Path Selection Trellis EncodingMinrate-blocking Dmt rate-adaptation Hardware Documents Software DocumentsSupported Platforms DSLAMsNumber of Available 8xDMT Chassis Slots Supported Standards, MIBs, and RFCs StandardsStandard Mibs Cisco-Derived MibsConfiguration Tasks Command PurposePrerequisites Enter DSL profile configuration mode Upstream on the fast path. Automatically configuresSelect the profile that you want to attach to Selected port. The profile name 8xDMT is used asMonitoring and Maintaining the 8xDMT Line Card Configuration Examples Current configuration 7019 bytesCommand Reference Alarms AlarmsSyntax Description Defaults Command Modes Command History Release ModificationCommand Description ExamplesCommand Modes Command History Dmt bitratePath Aggregate Configuration Data Range Default Those port settingsDownstream Upstream Path KbpsYou, use the dmt bitrate command to reduce the bit rate Dmt check-bytesValues for the connection Downstream and 6 upstreamRelated Commands None Dmt margin Dmt margin downstream dmt-marginupstream dmt-marginReleaseModification Syntax Description Defaults Command Modes Command History Release ModificationIOS 12.16DA This command was introduced Dmt minrate-blockingDefaults Command Modes Command History Usage Guidelines Dmt overhead-framingSyntax Description T1.413 and G992.1 G992.2 Framing Mode Downstream Upstream Related Commands DescriptionDmt rate-adaptation enable Adaptation, use the no form of the commandDmt rate-adaptation enable This command has no arguments or keywordsDefaults Command Modes Command History Dmt rate-adaptation intervalUpstream monitoring interval is 20 seconds Dmt rate-adaptation margin Dmt rate-adaptation margin min downstream dB upstream dBMin None Global configuration SlotUsage Guidelines Examples Glossary Pseudonym for G.992.1 Loss Of Delay Synchronization Problem is foundLoss of signal Loss of Cell DelineationLAN. Has no password security Providing reliable, connection-oriented full-duplex streamsRemote host and act as normal terminal users of that host VCI VPI

8xDMT specifications

Cisco Systems’ 8xDMT, or "Eightfold Digital Multicast Technology," is a pioneering solution designed to optimize multicast traffic management and enhance the scalability of network performance. This technology comes into play primarily in video broadcasting, online gaming, and other applications that require the efficient distribution of data to multiple endpoints, significantly reducing the bandwidth use while improving overall network efficiency.

One of the primary features of Cisco 8xDMT is its ability to support multiple multicast streams concurrently. By using advanced algorithms, 8xDMT ensures that network resources are utilized efficiently, minimizing latency and maximizing throughput. This makes it particularly advantageous for service providers and organizations that deliver high-definition video content or require real-time data transmission across geographic locations.

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The technology also incorporates robust security features, including support for secure multicast transmissions. This ensures that sensitive data remains protected during distribution, addressing the increasing need for security in an era where cyber threats are prevalent.

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In conclusion, Cisco Systems’ 8xDMT stands out as a versatile and high-performance multicast solution designed to meet modern networking demands. With its ability to manage multiple streams, enforce QoS, simplify multicast management, and secure communications, it holds significant potential for transforming how organizations distribute data efficiently and effectively.