Enterasys IRM2, Руководство пользователя

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The IRM2 Chassis View
2-10 Viewing Chassis Information
• NLK (Not Linked) when the port is on, but there is no physical link to the port.
This field is a combination of two status conditions: No Link and Port
Administrative Status On.
If you have selected the Admin status mode, a port is considered:
• ON if the port is enabled.
• OFF if the port has been disabled by management.
Note that these conditions do not reflect link status.
If you have selected the Link status mode, a port is considered:
• LNK (Linked) when a valid link has been established between the port and the
device at the other end of the segment.
• NLK (Not Linked) when the port is on, but there is no physical link to the port
or the device at the other end of the port’s segment is down.
• N/A (not available) when NetSight Element Manager cannot determine the
link status for the port.
Errors
If you choose the Errors mode, an additional menu offers the following options:
• Total Errors, Collisions, Alignment, CRC, Runts, Giants, or OOW Coll.
NOTE
Because BNC thin coax and AUI ports do not support the link feature, the displayed
Admin/Link, Admin, and Link status conditions will not always follow the pattern
described above.
Under Admin/Link status mode, BNC ports will display as ON if there is a valid
connection and the port has been enabled; OFF if the port has been disabled; and SEG if
the port has experienced 33 consecutive collisions or if there is no cable attached. An AUI
port will display as ON if the port has been enabled (regardless of whether or not there is a
valid connection), OFF if the port has been disabled, and SEG if the port has detected 33
consecutive collisions. Note that the Admin/Link status displays for BNC and AUI ports
can be misleading in terms of troubleshooting; be sure to keep in mind that a BNC port
displaying as segmented may only have had its cable disconnected, and an AUI port that
appears to be on and linked may not have any cable attached.
Under Admin status mode, AUI and BNC ports will display as ON if the port has been
enabled, and OFF if it has been disabled; as with other port types, these ON and OFF
conditions indicate nothing about link status.
Under Link status mode, AUI and BNC port display boxes will display N/A, indicating
that NetSight Element Manager is unable to determine their link status.