SMC Networks TigerAccess SMC7816M - Manual (Page 732)

VDSL C
OMMANDS
29-50
• When rate adaptation is enabled (see Command Usage, page 29-32),
the signal-to-noise ratio (SNR) is an indicator of link quality. The
switch itself has no internal functions to ensure link quality. To ensure
a stable link, you should add a margin to the theoretical minimum
signal-to-noise ratio (SNR).
Example
The following sets the minimum noise margin on downstream channels to
12 dB.
Related Commands
down/up-target-noise-mgn (29-48)
lre noise-mgn min (29-29)
Console(config-line-profile)#down-min-noise-mgn 12
Console(config-if)#