R2511-HP MSR Router Series Interface Command Reference(V5)

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shdsl snr-margin
Use shdsl snr-margin to set a target margin to signal-to-noise ratio (SNR).
Use undo shdsl snr-margin to restore the default.
Syntax
shdsl snr-margin [ current current-margin-value ] [ snext snext-margin-value ]
undo shdsl snr-margin
Default
Current-margin-value is set to 2 and snext-margin-value is set to 0.
Views
ATM (G.SHDSL) interface view
Default command level
2: System level
Parameters
current current-margin-value: Sets a target margin in the range of 0 to 10. During SHDSL line training,
this target margin is considered in addition to the signal-to-noise ratio (SNR) threshold. A larger margin
value means increased link stability and noise suppression ability.
snext snext-margin-value: Sets a target margin in the range of 0 to 10. During SHDSL line training, this
target margin is considered in addition to the SNEXT threshold. A larger margin value means increased
link stability and noise suppression ability.
Usage guidelines
Setting the margin can affect the maximum rate of the line. When the line condition is good, you can set
a small margin to obtain higher rates. When the line is noisy, a small margin might cause
disconnections.
Examples
# Set the SNR target margin to 5 on interface ATM 1/0.
<Sysname> system-view
[Sysname] interface atm 1/0
[Sysname-Atm1/0] shdsl snr-margin current 5
shdsl wire
Use shdsl wire to set the operating mode of the current G.SHDSL interface.
Use undo shdsl wire to restore the default.
Syntax
shdsl wire { 2 | 4-auto-enhanced | 4-enhanced | 4-standard | 6 | 8 | auto }
undo shdsl wire
Default
Four-wire G.SHDSL interfaces (interfaces on MIM-1SHL-4W and FIC-1SHL-4W modules) operate in
four-wire enhanced mode, four-wire G.SHDSL.BIS interfaces (fixed G.SHDSL.BIS interfaces on MSR20-13)