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VDSL Configuration
3-61
The following example shows rate adaption enabled for port 1.
The following example configures VDSL port 1 with an upstream noise margin of 6,
and a downstream noise margin of 6.
The following example configures VDSL port 1 with:
• M - downstream value: 16, Upstream value: 8
• I - downstream value: 8, Upstream value: 8
VDSL Port Link Status
Command Attributes
• General Status
- Link – Shows the status of the VDSL link.
- Noise Margin – To ensure a stable link, you should add a margin to the
theoretical minimum Signal-to-noise ratio (SNR). For details see “VDSL Port
Configuration” on page 3-58.
Range: 0-9 dBm. Default: 0 dBm
• PMD
1
Status
- SNR (dB) –The signal-to-noise ratio of the VDSL line.
- Downstream Rate (Mbps) – The rate at which data is transmitted from the
switch to the CPE.
- Upstream Rate (Mbps) – The rate at which data is transmitted from the CPE
to the switch.
1 Physical Media Dependent
Console#config
Console(config)#interface ethernet 1/1 4-84
Console(config-if)#efm rate-adapt 4-108
Console(config-if)#end
Console#
Console#config
Console(config)#interface ethernet 1/1 4-84
Console(config-if)#efm noise-margin 6 6 4-107
Console(config-if)#end
Console#
Console#config
Console(config)#interface ethernet 1/1
4-84
Console(config-if)#efm interleave 16 8 8 8 4-106
Console(config-if)#end
Console#show controllers efm status link Ethernet 1/1
Interface Link SNR (dB) RS Errs Interleaver
DS1 DS2 US1 US2 DS.M DS.I US.M US.I PBO
------------- ---- -------------------- -------- ------------------- ---
Ethernet 1/1 Up 43.0 35.0 45.0 43.0 0 16 8 8 8 on
Console#