User Manual

by the PHY for the current link speed. Note that if the link is down and a cable is
attached to a 10/100 Ethernet adapter then the cable status might be Open or Short
because some Ethernet adapters leave unused wire pairs unterminated or grounded.
The following table describes the nonconfigurable information displayed on the page.
Table 169. Cable Test
DescriptionField
Indicates the cable status:
•
Normal: The cable is working correctly.
•
Open: The cable is disconnected or a faulty connector exists.
•
Short: An electrical short exists in the cable.
•
Cable Test Failed: The cable status could not be determined. The cable
might in fact be working.
•
Untested: The cable is not yet tested.
•
Invalid cable type: The cable type is unsupported.
Cable Status
The estimated length of the cable in meters. The length is displayed as a range
between the shortest estimated length and the longest estimated length.
Unknown is displayed if the cable length could not be determined. The cable
length is displayed only if the cable status is Normal.
Cable Length
The estimated distance in meters from the end of the cable to the failure
location. The failure location is displayed only if the cable status is Open or
Short.
Failure Location
Logs
The switch generates messages in response to events, faults, and errors as well as
changes in the configuration or other occurrences. These messages are stored locally
and can be forwarded to one or more centralized points of collection for monitoring
purposes or long-term archival storage (see Syslog and log server host settings on page
711). Local and remote configuration of the logging capability includes filtering of
messages logged or forwarded based on severity and generating component.
Manage and display the memory log
The memory log stores messages in memory based upon the settings for message
component and severity. You can set the administrative status and behavior of logs in
the system buffer. These log messages are cleared when the switch reboots.
Main User Manual706Monitor the Switch and Network
AV Line of Fully Managed Switches M4250 Series Main User Manual