Using The Port Monitoring Display Keys; Slot Diagnostics - Extreme Networks ExtremeWare XOS Guide Manual

The switch collects the following port receive error information:
Receive Bad CRC Frames (RX CRC)—The total number of frames received by the port that were of
●
the correct length but contained a bad FCS value.
Receive Oversize Frames (RX Over)—The total number of good frames received by the port greater
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than the supported maximum length of 1,522 bytes.
Receive Undersize Frames (RX Under)—The total number of frames received by the port that were
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less than 64 bytes long.
Receive Fragmented Frames (RX Frag)—The total number of frames received by the port that were
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of incorrect length and contained a bad FCS value.
Receive Jabber Frames (RX Jab)—The total number of frames received by the port that were greater
●
than the support maximum length and had a Cyclic Redundancy Check (CRC) error.
Receive Alignment Errors (RX Align)—The total number of frames received by the port with a CRC
●
error and not containing an integral number of octets.
Receive Frames Lost (RX Lost)—The total number of frames received by the port that were lost
●
because of buffer overflow in the switch.

Using the Port Monitoring Display Keys

Table 15 describes the keys used to control the displays that appear when you issue any of the
commands.
port
Table 15: Port monitoring display keys
Key(s) Description
U Displays the previous page of ports.
D Displays the next page of ports.
[Esc] or [Return] Exits from the screen.
0 Clears all counters.
[Space] Cycles through the following screens:
• Packets per second
• Bytes per second
• Percentage of bandwidth
Available using the show port utilization command only.

Slot Diagnostics

The switch provides a facility for running normal or extended diagnostics on Input/Output (I/O)
modules or Management Switch Fabric Modules (MSMs) without affecting the operation of the rest of
the system.
When you run diagnostics on a module, the switch verifies that the:
Registers can be written to and read from correctly
●
Memory addresses are accessed correctly
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ExtremeWare XOS 11.1 Concepts Guide

Using the Port Monitoring Display Keys

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