SMC Networks TigerAccess SMC7816M - Manual (Page 756)

VDSL C
OMMANDS
29-74
show lre noise-mgn
This command displays the targeted signal-to-noise margin that VDSL
ports must achieve to successfully complete initialization.
Syntax
show lre noise-mgn [unit/port]
• unit - Stack unit. (Range: 1)
• port - Port number. (Range: 1-16)
Command Mode
Privileged Exec
Command Usage
• Use this command without the interface parameter to show the SNR
target for all VDSL ports on the switch, or with an interface to display
this information for a specific port.
• Each transceiver must achieve the targeted noise margin with a Bit
Error Rate (BER) of 10 -7 or better to successfully complete
initialization. This indicates the maximum amount by which the
reference crosstalk noise level can be increased during a BER test
without causing the modem to fail the BER requirement.
Example
This example shows the default noise margin targets.
Related Commands
lre noise-mgn target (29-28)
Console#show lre noise-mgn 1/1
Upstream Noise Margin Min: 5 dB
Downstream Noise Margin Min: 5 dB
Upstream Noise Margin Target: 6 dB
Downstream Noise Margin Target: 6 dB
Console#