SMC Networks SMC7816M, SMC7816VSW E, C, 29-33, lre rate-adaption

L ONG -R EACH E THERNET C OMMANDS
29-33
lre rate-adaption
This command enables automatic line rate adaptation, which can set the
optimal transmission rate based on existing line conditions. Use the no
form to disable this feature.
Syntax
[no] lre rate-adaption
Default Setting
Enabled
Command Mode
Global Configuration
Interface Configuration (VDSL Port)
Command Usage
• Enter this command in global configuration mode to enable rate
adaptation for all VDSL ports, or in interface mode to enable it for a
specific VDSL port.
• The data rate on a VDSL line can be affected by factors suc h as
temperature, humidity, and electro-magnetic radiation. When rate
adaptation is enabled and the port links up, the switch will determine
the optimal transmission rate for the current conditions, setting the
rate within the bounds defined by the lre datarate command
(page29-26) .
• When rate adaptation is enabled and the signal quality deteriorates on
any line or the link is re-established after being dropped, that port will
automatically enter retraining and connect at the optimum rate if lre
auto-retraining (page 29-31) is enabled. Otherwise, the rate can be
manually retrained using the lre retraining command (page 29-32).
Example
Console(config)#interface ethernet 1/1
Console(config-if)#lre rate-adaption
Console(config-if)#