NaviTEK NT 151844 Iss 4
User Guide Page 16
Port Discovery information details
When an Ethernet link is established, Autotest automatically scans the partner port for Link
Layer Discovery Protocol (LLDP), Cisco Discovery Protocol (CDP) and Extreme Discovery
Protocol (EDP) messages. These Discovery Protocol messages may contain various details
about the switch and the port connected, depending on how they are configured. Discovery
Protocol messages may take up to 60 seconds to be transmitted by the switch. In non-
standard network configurations it is sometimes possible for Discovery Protocol messages to
arrive from other devices in the network. In this case, the tester attempts to resolve which are
the messages from the directly connected port.
Following link establishment, the screen flashes "Searching for Port Identification" until the
first Discovery Protocol message is received. The screen then starts to flash the switch name
and MAC address of the port that the Discovery Protocol message has come from. If the
message is confirmed as coming from the directly connected port, the screen then shows full
details of the port continuously.
At the end of 60 seconds from link establishment:
• If a unique or confirmed Discovery Protocol message has been received, the screen
shows the port details continuously.
•
If multiple different Discovery Protocol messages have been received, and it is not
possible to resolve which one has come from the directly connected port, the screen
shows "Multiple". The user can then select this and review a list of the different
Discovery Protocol messages that have been received, to aid in identification of the
correct port.
•
If no Discovery Protocol message has been received, the screen shows "No Discovery
Info".
Select the switch / port
details field in the HOME
screen and press ENTER
to display the port
discovery details screen.
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