Intel 470 manual Port Error Statistics

C H A P T E R 5 Intel® NetStructure™ 470T and 470F Switches User Guide

Port Error Statistics

LOCATION

Main Menu

Monitoring

Port Error Statistics

Description

Select port: Selects the range of ports to view. You can view statistics for four ports at a time. Press zto toggle between port numbers. The example shows ports 1–4.

Update interval: Selects the time period between updates (press z). For example, an update interval of 5 sec. means Local Management collects and displays information from the switch every five seconds.

Speed/Duplex: Displays the current connection status of the port.

CRC error: Displays the number of valid-length frames (between 64 and 1536 bytes) that had a bad frame check sequence (FCS).

Oversize frames: Displays the number of frames that exceed the maximum allowed frame size but are otherwise valid Ethernet frames (good CRC).

Fragments: Displays the number of frames that are less than 64 bytes, including frames without a start-of-frame delimiter. A fragmented frame also has an invalid CRC.

Jabber: Indicates that a device (such as a faulty NIC) on the network is sending improper electrical signals. Because Ethernet uses electrical signaling to determine whether it can transmit, a jabber condition can halt all traffic on a segment.

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