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66

Figure 8

WAN Statistics Screen

Each field is described in the following table.

3.7

The xTM Statistics Screen

Log into the VDSL Router’s web configurator and click

Wireless network > Classic configuration

> Device Info > Statistics > xTM

to display ATM or PTM connection information.

Table 6

WAN Statistics Screen

LABEL

DESCRIPTION

Interface

This shows the name of the WAN interface used by this connection.

The default name

ipoa*

,

pppoa*, atm*

or

ptm*

indicates the DSL port.

ppp*

indicates a

PPP connection via any one of the WAN interfaces.

ppp3G0

indicates a PPP connection

through the 3G interface.

The number after the dot (

.

) represents the VLAN ID number assigned to traffic sent

through this connection. The number after the underscore (

_

) represents the index number

of connections through the same interface.

(null)

means the entry is not valid.

Description

This shows the descriptive name of this connection.

ATM interfaces include the VPI and VCI.

0

and

35

or

0

and

1

are the default VPI and VCI

numbers. The last number represents the index number of connections over the same PVC

or the VLAN ID number assigned to traffic sent through this connection.

(null)

means the entry is not valid.

Received

Bytes

This indicates the number of bytes received on this interface.

Pkts

This indicates the number of packets received on this interface.

Errs

This indicates the number of frames with errors received on this interface.

Drops

This indicates the number of received packets dropped on this interface.

Transmitted

Bytes

This indicates the number of bytes transmitted on this interface.

Pkts

This indicates the number of transmitted packets on this interface.

Errs

This indicates the number of frames with errors transmitted on this interface.

Drops

This indicates the number of outgoing packets dropped on this interface.

Reset Statistics

Click this to clear the screen’s statistics counters.

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Figure 9

xTM Statistics Screen

Each field is described in the following table.

3.8

The xDSL Statistics Screen

Log into the VDSL Router’s web configurator and click

Wireless network > Classic configuration

> Device Info > Statistics > xDSL

to display information about the VDSL Router’s VDSL or ADSL

connections.

Table 7

xTM Statistics Screen

LABEL

DESCRIPTION

Port Number

This identifies the ATM or PTM port.

In Octets

This displays the number of 8-bit binary digits (bytes) received through the port.

Out Octets

This displays the number of 8-bit binary digits (bytes) sent through the port.

In Packets

This displays the number of packets received through the port.

Out Packets

This displays the number of packets sent through the port.

In OAM Cells

This displays the number of OAM (Operational, Administration and Maintenance) cells

received through the port.

Out OAM Cells

This displays the number of OAM cells sent through the port.

In ASM Cells

This displays the number of ASM (Autonomous Status Message) cells received through the

port.

Out ASM Cells

This displays the number of ASM cells sent through the port.

In Packet Errors

This displays the number of errored packets received on the port.

In Cell Errors

This displays the number of errored cells received on the port.

Reset

Click this to clear the screen’s statistics counters.

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Figure 10

xDSL Statistics Screen

Each field is described in the following table.

Table 8

xDSL Statistics Screen

LABEL

DESCRIPTION

Mode

This field identifies the DSL mode of the DSL connection.

Traffic Type

This displays the type of traffic the DSL port is sending and receiving.

Status

This displays the current state of setting up the DSL connection.

Link Power

State

This displays the DSL connection’s current power usage or power saving mode.

null

displays

when there is no DSL connection.

Downstream

These are the statistics for the traffic direction coming into the port from the service

provider.

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Upstream

These are the statistics for the traffic direction going out from the port to the service

provider.

Line Coding

(Trellis)

This displays whether or not the port is using Trellis coding for traffic. Trellis coding helps to

reduce the noise in ADSL transmissions. Trellis may reduce throughput but it makes the

connection more stable.

SNR Margin

(0.1 dB)

This displays the Signal-to-Noise Ratio margin (in 0.1 dB). A DMT sub-carrier’s SNR is the

ratio between the received signal power and the received noise power. The signal-to-noise

ratio margin is the maximum that the received noise power could increase with the system

still being able to meet its transmission targets.

Attenuation

(0.1 dB)

This displays the line attenuation, measured in tenths of a decibel (0.1 dB). This attenuation

is the difference between the power transmitted at the near-end and the power received at

the far-end. Attenuation is affected by the channel characteristics (wire gauge, quality,

condition and length of the physical line).

Output Power

(0.1 dBm)

This displays the far end actual aggregate transmit power (in dBm). Downstream is how

much port the service provider is using to transmit to the port. Upstream is how much

power the port is using to transmit to the service provider.

Attainable Rate

(Kbps):

These are the highest theoretically possible transfer rates at which the port could send and

receive data.

Rate (Kbps)

This displays the data transfer rates at which the port is receiving and sending.

Super Frames

This displays the number of ADSL superframes the DSL connection received and

transmitted. Each superframe contains 68 ADSL data frames and a one-frame synch symbol

for a total number of 69 frames.

Super Frame

Errors

This displays the number of errored ADSL superframes the DSL connection received and

transmitted.

RS Words

This displays the number of Reed Solomon error correction words for received and

transmitted traffic.

RS Correctable

Errors

This displays the number of errored packets corrected by Reed Solomon error correction for

received and transmitted traffic.

RS

Uncorrectable

Errors

This displays the number of errored packets that Reed Solomon error correction could not

correct for received and transmitted traffic.

HEC Errors

Header Error Control (HEC) checks for errors in packet headers.

OCD Errors

The number of Out of Cell Delineation errors for received and transmitted traffic. An OCD

error means seven consecutive ATM cells had Header Error Control (HEC) violations.

LCD Errors

The number of Loss of Cell Delineation errors for received and transmitted traffic. An LCD

state means an OCD condition persisted for 4 milliseconds.

Total Cells

This displays the total number of DSL cells including headers.

Data Cells

This displays the number of data payload DSL cells, excluding headers.

Bit Errors

This displays the number of errored bits.

Total ES

This displays the number of Errored Seconds meaning the number of seconds containing at

least one errored block or at least one defect.

Total SES

This displays the number of Severely Errored Seconds meaning the number of seconds

containing 30% or more errored blocks or at least one defect. This is a subset of ES.

Total UAS

This displays the number of UnAvailable Seconds.

xDSL BER Test

Click this to open a screen where you can perform a ADSL Bit Error Rate (BER) test to

determine the quality of the ADSL connection.

Reset Statistics

Click this to clear the screen’s statistics counters.

Table 8

xDSL Statistics Screen (continued)

LABEL

DESCRIPTION

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3.8.1

The ADSL BER Test Screen

Do the following while the VDSL Router has an ADSL connection to perform a ADSL Bit Error Rate

(BER) test to determine the quality of the ADSL connection.

1

Log into the VDSL Router’s web configurator and click

Wireless network > Classic configuration

> Device Info > Statistics > xDSL > xDSL BER Test

to display this screen. Select a test

duration and click

Start

.

2

Click

Stop

to finish the test.

3

The test results display including the test’s duration, the number of bits transferred, the number of

errored bits, and the ratio of errored bits to transmitted bits.

3.9

The Route Info Screen

Log into the VDSL Router’s web configurator and click

Wireless network > Classic configuration

> Device Info > Route

to display the VDSL Router’s routing table.