NETGEAR GS108Tv3 Router Manual PDF (Setup & Configuration Guide)

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GS108T Smart Switch Software Administration Manual

6-2

Monitoring, Maintenance, and Help

v1.0, December 2007

Ports

The Ports menu lets you display the statistics for individual ports and for all ports. You can display

the internal traffic counters, information about processed EAP packets, and information about

processed IEEE 802.1x packets.

Port Statistics

The Port Statistics screen displays information from each port’s internal counters:

1.

Select Monitoring > Ports > Port Statistics. A screen similar to the following displays.

(Because the online screen is very tall, it is divided in a top screen and bottom screen in this

manual.)

The following figure displays the top of the Port Statistics screen:

Figure 6-1

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2.

Under Port Selection, select a port from the

Port

drop-down list.

3.

Click

Apply

.

Under Statistics, the following information is shown for the selected port:

•

TX statistics for packets transmitted from the port:

–

Bytes

. Shows the number of transmitted bytes.

–

UnicastPkts

. Shows the number of transmitted unicast packets.

–

MulticastPkts

. Shows the number of transmitted multicast packets.

–

BroadcastPkts

. Shows the number of transmitted broadcast packets.

–

Discards

. Shows the number of discarded packets.

–

Errors

. Shows the number of excessive collision packets.

–

Collision

. Shows the number of collision packets.

–

RX statistics for packets received on the port:

–

Bytes

. Shows the number of received bytes.

–

UnicastPkts

. Shows the number of received unicast packets.

–

MulticastPkts

. Shows the number of received multicast packets.

–

BroadcastPkts

. Shows the number of received broadcast packets.

–

Discards

. Shows the number of discarded packets.

–

Errors

. Shows the number of undersized packets, fragmented packets, packets with

an invalid frame check sequence (FCS), and oversized packets with a proper FCS.

–

UndersizePkts

. Shows the number of received packets with a length less than the

minimum packet size.

–

OversizePkts

. Shows the number of received packets with a length more than the

maximum packet size.

–

Fragments

. Shows the number of received packets (length 10–63 bytes) with an

invalid FCS or alignment error.

–

Jabbers

. Shows the number of received packets with an invalid FCS or code error that

exceed the maximum counter size up to the maximum received frame length.

–

CRCAlignErr

. Shows the number of received packets with an invalid FCS for which

the lengths are between 64 bytes and the maximum counter size.

–

64 BytePkts

. Shows the number of transmitted packets with a packet length less than

or equal to 64 bytes.

–

65 to 127 BytePkts

. Shows the number of transmitted packets with a packet length

between (and including) 65 and 127 bytes.

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–

128 to 255 BytePkts

. Shows the number of transmitted packets with a packet length

between (and including) 128 and 255 bytes.

–

256 to 511 BytePkts

. Shows the number of transmitted packets with a packet length

between (and including) 256 and 511 bytes.

–

512 to 1023 BytePkts

. Shows the number of transmitted packets with a packet length

between (and including) 512 and 1023 bytes.

–

1024 to 1518 BytePkts

. Shows the number of transmitted packets with a packet

length between (and including) 1024 and 1518 bytes.

The following figure displays the bottom of the Port Statistics screen:

Under Summary Statistics, the following information is shown for all ports (1–8):

•

TX statistics for packets transmitted from the ports:

–

Bytes

. Shows the number of transmitted bytes.

–

Unicast Packets

. Shows the number of transmitted unicast packets.

–

Drop Packets

. Shows the number of transmitted packets that were dropped by the

global memory buffer pool (GBP) or by a backpressure discard condition. (In this

situation, a backpressure discard condition occurs when the switch does not transmit

packets to a congested port.)

Figure 6-2

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GS108T Smart Switch Software Administration Manual

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v1.0, December 2007

•

RX statistics for packets received on the ports:

–

Bytes

. Shows the number of received bytes.

–

Unicast Packets

. Shows the number of received unicast packets.

–

Drop Packets

. Shows the number of received packets that were dropped by the global

memory buffer pool (GBP) or by a backpressure discard condition. (In this situation, a

backpressure discard condition occurs when packets are not forwarded to a congested

port of the switch.)

4.

Perform one of the following optional actions:

•

To reset all counters to zero, click

Clear Counters

.

•

To retrieve the current count from the switch and update the screen, click

Refresh

.

EAP Statistics

The EAP Statistics screen displays information about Extensible Authentication Protocol (EAP)

packets that were processed on a specific port:

1.

Select Monitoring > Ports > EAP Statistics. A screen similar to the following displays.

Figure 6-3

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v1.0, December 2007

2.

Under Port Selection, the following fields are displayed, both of which are configurable:

•

Port

. Specifies the port for which the EAP statistics are to be shown. Select a port from

the drop-down list.

•

Refresh Rate

. Specifies the period that passes before the EAP statistics are refreshed. The

possible field values are:

–

15 Sec

. Specifies that the EAP statistics are refreshed every 15 seconds.

–

30 Sec

. Specifies that the EAP statistics are refreshed every 30 seconds.

–

60 Sec

. Specifies that the EAP statistics are refreshed every 60 seconds.

–

No Refresh

. Specifies that the EAP statistics are not refreshed.

3.

Click

Apply

.

Under EAP Statistics, the following information is shown for the selected port:

•

Frames Receive

. Specifies the number of received valid EAP over LANs (EAPOL)

frames.

•

Frames Transmit

. Specifies the number of transmitted EAPOL frames.

•

Start Frames Receive

. Specifies the number of received EAPOL start frames.

•

Log off Frames Receive

. Specifies the number of received EAPOL logoff frames.

•

Respond ID Frames Receive

. Specifies the number of received EAP respond ID frames.

•

Respond Frames Receive

. Specifies the number of received valid EAP response frames.

•

Request ID Frames Transmit

. Specifies the number of transmitted EAP request ID

frames.

•

Request Frames Transmit

. Specifies the number of transmitted EAP request frames.

•

Invalid Frames Receive

. Specifies the number of received unrecognized EAPOL frames.

•

Length Error Frames Receive

. Specifies the number of received EAPOL frames with an

invalid packet body length.

•

Last Frame Version

. Specifies the protocol version number attached to the most recently

received EAPOL frame.

•

Last Frame Source

. Specifies the source MAC address attached to the most recently

received EAPOL frame.

4.

To retrieve the current count from the switch and update the screen, click

Refresh

(optional).

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