Cisco Systems manual Monitoring and Maintaining the 8xDMT Line Card

Page 8

Octal-Port DMT ATU-C Line Card

Monitoring and Maintaining the 8xDMT Line Card

 

Command

Purpose

Step 3

 

 

DSLAM(config-dsl-profile)# dmt

Set the upstream and downstream FEC check (redundancy) bytes

 

check-bytes fast downstream 0 upstream 0

to 0.

Step 4

 

 

DSLAM(config-dsl-profile)# dmt margin

Set the downstream and upstream signal-to-noise ratio (SNR)

 

downstream 12 upstream 6

margins for a DSL profile.

Step 5

 

 

DSLAM(config-dsl-profile)# dmt

Set the overhead framing mode, in this example to 1.

 

overhead-framing mode1

 

Step 6

 

 

DSLAM(config-dsl-profile)# exit

Return to the global configuration prompt.

 

 

 

Troubleshooting Tips

Cisco provides Cisco.com as a starting point for all technical assistance. Customers and partners can obtain documentation, troubleshooting tips, and sample configurations from online tools.

For Cisco.com registered users, additional troubleshooting tools are available from the TAC website. To obtain troubleshooting help, go to the Cisco Troubleshooting Assistant web site on Cisco Connection Online (CCO) at:

http://www.cisco.com/kobayashi/support/tac/tsa/dslstep.html

Also see the “Monitoring and Maintaining the 8xDMT Line Card” section on page 8 .

Monitoring and Maintaining the 8xDMT Line Card

Use the following commands to monitor and maintain the 8xDMT line card:

Command

Purpose

 

 

DSLAM# show dsl interface atm slot/port

These commands display basic information about the DSL link,

DSLAM# show dsl status DMT

including port status, dsl statistics, line errors, and cards detected.

 

 

 

DSLAM# show facility-alarm status

The show facility-alarm status command displays all of the current

 

major and minor alarms and the user-configurable alarm thresholds

 

for temperature. After an alarm condition is indicated (by LEDs or

 

bells), you can use the show facility-alarm status command to

 

determine the cause of the alarm.

 

Note You must turn on the alarms in the profile for alarms to

 

be displayed.

 

 

DSLAM# show hardware

The show hardware command shows information on each of the

 

slots in your chassis. It tells whether line cards, fan trays, and PEMs

 

are present.

 

 

Cisco IOS Release 12.1(6)DA

8

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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 DocumentsNumber of Available 8xDMT Chassis Slots Supported PlatformsDSLAMs Supported Standards, MIBs, and RFCs StandardsStandard Mibs Cisco-Derived MibsPrerequisites Configuration TasksCommand Purpose 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 ReleaseModification Dmt marginDmt margin downstream dmt-marginupstream dmt-margin Syntax Description Defaults Command Modes Command History Release ModificationIOS 12.16DA This command was introduced Dmt minrate-blockingSyntax Description Defaults Command Modes Command History Usage GuidelinesDmt overhead-framing 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 Min Dmt rate-adaptation marginDmt rate-adaptation margin min downstream dB upstream dB None Global configuration SlotUsage Guidelines Examples Glossary Pseudonym for G.992.1 Loss Of Delay Synchronization Problem is foundLoss of signal Loss of Cell DelineationRemote 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.