Allied Telesis AT-CV5000 - Manual (Page 28)

Chapter 1: Overview
28
Converteon™ Line Cards
Note
For a current list of line cards for the Converteon™ Series Chassis,
refer to the Allied Telesis web site or consult your authorized sales
representative. For detailed descriptions of these line cards, refer to
the documentation shipped with the line cards and/or the
Converteon™ Media Converter Line Cards Reference Guide.
On some Converteon™ line cards, you can enable or disable the following
features by configuring their DIP switches:
ˆ Link Test
ˆ MissingLink™ Mode
ˆ Smart MissingLink Mode
ˆ OAM Capabilities
Link Test
The link test is a fast and easy way for you to test the connections
between the converter ports and the end nodes that are connected to the
ports. If a network problem occurs, you can perform a link test to
determine which port is experiencing a problem, and therefore focus your
troubleshooting efforts on the cable and end node where the problem
resides.
The LK LED for the twisted pair port should be green, indicating that it was
able to establish a link with its end nodes. If the LK LED is off, the port
could not establish a link. Refer to “Troubleshooting” on page 95 for
suggestions on how to remedy the problem.
For more information on how the LK LED functions, refer to Appendix A in
the Converteon™ Media Converter Line Cards Reference Guide.
Performing a link test does not interfere with a converter’s ability to pass
network traffic.
MissingLink™
The MissingLink™ feature enables the ports on the media converter to
pass the link status of their connections to each other. When the media
converter detects a problem on one of the ports, such as the loss of
connection to an end node, the media converter shuts down the
connection to the other port, thus notifying the end node that the
connection has been lost.
For example, if the twisted pair cable to the 10/100Base-TX port on the
media converter fails, the line card drops the link on the 100Base-FX fiber
optic port. In this way, the media converter notifies the end node
connected to the fiber optic port that the connection on the twisted pair