4.2 Statistics

Selection of the Statistics screen provides statistics for the Network Interface of LAN,

WAN, ATM, ADSL and VDSL. All statistics screens are updated every 15 seconds.

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4.2.1

LAN Statistics

The Network Statistics screen shows the interface statistics for the ATM AAL5

interface, and Ethernet interfaces. (The Network Statistics screen shows the

interface statistics for the LAN interface. This provides byte transfer, packet transfer,

Error and Drop statistics for the LAN interface.)

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4.2.2

WAN Statistics

Service

Shows the service type

VPI/VCI

Shows the values of the ATM VPI/VCI

Protocol

Shows the connection type, such as PPPoE,

PPPoA, etc.

Interface

Shows connection interfaces

Received/Transmitted

-

Bytes

-

Pkts

-

Errs

-

Drops

Rx/TX (receive/transmit) packet in Bytes

Rx/TX (receive/transmit) packets

Rx/TX (receive/transmit) the errored packets

Rx/TX (receive/transmit) dropped packets

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4.2.3

ATM statistics

The following figure shows the ATM statistics screen.

ATM Interface Statistics

Field

Description

In Octets

Number of received octets over the interface

Out Octets

Number of transmitted octets over the interface

In Errors

Number of cells dropped due to uncorrectable HEC errors

In Unknown

Number of received cells discarded during cell header validation,

including cells with unrecognized VPI/VCI values, and cells with

invalid cell header patterns. If cells with undefined PTI values

are discarded, they are also counted here.

In Hec Errors

Number of cells received with an ATM Cell Header HEC error

In Invalid Vpi Vci

Errors

Number of cells received with an unregistered VCC address.

In Port Not

Enabled Errors

Number of cells received on a port that has not been enabled.

In PTI Errors

Number of cells received with an ATM header Payload Type

Indicator (PTI) error

In Idle Cells

Number of idle cells received

In Circuit Type

Errors

Number of cells received with an illegal circuit type

In Oam RM CRC

Errors

Number of OAM and RM cells received with CRC errors

In GFC Errors

Number of cells received with a non-zero GFC.

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ATM AAL5 Layer Statistics over ADSL interface

Field

Description

In Octets

Number of received AAL5/AAL0 CPCS PDU octets

Out Octets

Number of received AAL5/AAL0 CPCS PDUs octets transmitted

In Ucst Pkts

Number of received AAL5/AAL0 CPCS PDUs passed to a

higher-layer

Out Ucast Pkts

Number of received AAL5/AAL0 CPCS PDUs received from a

higher layer for transmission

In Errors

Number of received AAL5/AAL0 CPCS PDUs received in error.

The types of errors counted include CRC-32 errors.

Out Errors

Number of received AAL5/AAL0 CPCS PDUs that could be not

transmitted due to errors.

In Discards

Number of received AAL5/AAL0 CPCS PDUs discarded due to

an input buffer overflow condition.

Out Discards

This field is not currently used

ATM AAL5 Layer Statistics for each VCC over ADSL interface

Field

Descriptions

CRC Errors

Number of PDUs received with CRC-32 errors

SAR TimeOuts

Number of partially re-assembled PDUs which were discarded

because they were not fully re-assembled within the required

period of time. If the re-assembly time is not supported

then, this object contains a zero value.

Over Sized SDUs

Number of PDUs discarded because the corresponding SDU

was too large

Short Packets Errors Number of PDUs discarded because the PDU length was less

than the size of the AAL5 trailer

Length Errors

Number of PDUs discarded because the PDU length did not

match the length in the AAL5 trailer

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