Cisco Systems 8xDMT manual Upstream monitoring interval is 20 seconds

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Octal-Port DMT ATU-C Line Card

dmt rate-adaptation interval

Usage Guidelines

 

Use the dmt rate-adaptation interval to specify the frequency at which line margins are checked on a

 

 

 

 

DMT port. The dmt rate-adaptation interval command works in conjunction with the

 

 

 

 

dmt rate-adaptation margin 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 port to retrain

 

 

 

 

to a higher bit rate.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Examples

 

The following example configures a downstream monitoring interval of roughly 60 to 150 seconds. The

 

 

 

 

upstream monitoring interval is 20 seconds.

 

 

 

 

config terminal

 

 

 

 

 

 

 

dsl-profile austin

 

 

 

 

 

 

 

dmt rate-adaptation interval downshift downstream 10 upstream 20

 

 

 

 

 

 

 

 

Related Commands

 

Command

Description

 

 

 

 

 

 

 

 

 

 

 

 

dmt rate-adaptation enable

Turns on rate adaptation.

 

 

 

 

 

 

 

 

 

dmt rate-adaptation margin Sets the SNR margins below which a DMT port retrains to a lower

 

 

 

 

 

 

bit rate.

 

 

 

 

 

 

 

 

Cisco IOS Release 12.1(6)DA

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Contents Octal-Port DMT ATU-C Line Card Feature OverviewTrellis Encoding Hs Support ITU G.994.1Bit Swapping Fast or Interleaved Path SelectionHardware Documents Software Documents Minrate-blocking Dmt rate-adaptationNumber of Available 8xDMT Chassis Slots Supported PlatformsDSLAMs Cisco-Derived Mibs Supported Standards, MIBs, and RFCsStandards Standard MibsPrerequisites Configuration TasksCommand Purpose Selected port. The profile name 8xDMT is used as Enter DSL profile configuration modeUpstream on the fast path. Automatically configures Select the profile that you want to attach toMonitoring and Maintaining the 8xDMT Line Card Current configuration 7019 bytes Configuration ExamplesCommand Reference Release Modification AlarmsAlarms Syntax Description Defaults Command Modes Command HistoryExamples Command DescriptionDmt bitrate Command Modes Command HistoryPath Kbps Path Aggregate Configuration Data Range DefaultThose port settings Downstream UpstreamDownstream and 6 upstream You, use the dmt bitrate command to reduce the bit rateDmt check-bytes Values for the connectionRelated Commands None ReleaseModification Dmt marginDmt margin downstream dmt-marginupstream dmt-margin Dmt minrate-blocking Syntax Description Defaults Command ModesCommand History Release Modification IOS 12.16DA This command was introducedSyntax Description Defaults Command Modes Command History Usage GuidelinesDmt overhead-framing Related Commands Description T1.413 and G992.1 G992.2 Framing Mode Downstream UpstreamThis command has no arguments or keywords Dmt rate-adaptation enableAdaptation, use the no form of the command Dmt rate-adaptation enableDmt rate-adaptation interval Defaults Command Modes Command HistoryUpstream monitoring interval is 20 seconds Min Dmt rate-adaptation marginDmt rate-adaptation margin min downstream dB upstream dB Slot None Global configurationUsage Guidelines Examples Glossary Pseudonym for G.992.1 Loss of Cell Delineation Loss Of Delay SynchronizationProblem is found Loss of signalRemote host and act as normal terminal users of that host LAN. Has no password securityProviding reliable, connection-oriented full-duplex streams 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.

Another notable characteristic of the Cisco 8xDMT is its integrated Quality of Service (QoS) capabilities. This feature allows for the prioritization of multicast traffic, ensuring that critical data packets are transmitted smoothly without delay, even during peak load times. The QoS management allows administrators to configure settings that guarantee minimal disruptions, providing end users with a seamless viewing or gameplay experience.

Additionally, Cisco 8xDMT takes advantage of Multicast Domain Name System (mDNS), which allows devices on the same network to discover and communicate efficiently. This not only aids in reducing the network load but also simplifies the management of multicast addresses, making it easier for organizations to scale their operations without significant overhead.

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.

Furthermore, Cisco Systems emphasizes interoperability with its 8xDMT platform, ensuring easy integration with existing network infrastructure. This is crucial for enterprises looking to modernize their systems without the need for extensive reinvestment in new hardware.

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.
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