C H A P T E R 5 Using Local Management
Port Error Statistics
Local Management
LOCATION
Main Menu
Monitoring
Port Error Statistics
Description
Select Port: Select the range of ports to view. Statistics are displayed four ports at a time. Press the z to toggle between port numbers and the optional module. The example shows ports
Update interval: Press the z to select the time period between updates. For example, an Update interval of 5 sec means Local Management collects and displays information from the switch every five seconds.
Speed/Duplex: The current connection status of the port.
CRC Errors: The number of valid length frames (between 64 and 1536 bytes) that had a bad Frame Check Sequence (FCS).
Oversize Frames: Number of frames that exceed the maximum allowed frame size but are otherwise valid Ethernet frames (good CRC).
Fragment: The number of frames that are less than 64 bytes. This number includes frames without a
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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