Cisco Octal-Port DMT ATU-C Line Card Uživatelský manuál stáhnout pdf (Strana 7)

182 Chapter 8: Using DSL to Access a Central Site

To create a DSL proﬁle, or to select an existing proﬁle for modiﬁcation, use the following

command:

dsl-profile

profile-name

To delete a DSL proﬁle, use the following command:

no dsl-profile

profile-name

In both examples, proﬁle-name is the name of the proﬁle you want to create, or an existing

proﬁle you want to delete or modify. To create a DSL proﬁle called ccnp, you would enter

the following:

lab-6160#configure terminal

lab-6160(config)#dsl-profile ccnp

After the DSL proﬁles are created, you can customize them with the following parameters:

• Bit rate

• DMT margin

• Check bytes

• Interleaving delay

• Training mode

The following sections discuss these parameters in more detail.

Setting the Bit Rate

To set the maximum and minimum allowed bit rates for the fast-path and interleaved-path

proﬁle parameters, use the following command:

dmt bitrate max interleaved downstream

dmt-bitrate

upstream

dmt-bitrate

dmt-bitrate is a multiple of 32 kbps. If you enter a nonmultiple of 32 kbps, the Cisco IOS

software aborts the command.

In Example 8-1, the command sets the maximum interleaved-path bit rate of the ccnp proﬁle to

8032 kbps downstream and 832 kbps upstream.

Setting the Margins

To set upstream and downstream signal-to-noise ratio (SNR) DMT margins, use the following

command:

dmt margin downstream

dmt-margin

upstream

dmt-margin

Example 8-1 Setting the Bit Rate

lab-6160#configure terminal

lab-6160(config)#dsl-profile ccnp

lab-6160(config-dsl-prof)#dmt bitrate interleaved-path downstream 8032

upstream 832

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