Extreme Discovery Protocol

The EDP (Extreme Discovery Protocol) is used to gather information about neighbor Extreme Networks switches. EDP is used by the switches to exchange topology information. Information communicated using EDP includes:

Switch MAC address (switch ID)
Switch software version information
Switch IP address
Switch VLAN (Virtual LAN) IP information
Switch port number
Switch configuration data: duplex and speed

EDP is enabled on all ports by default. EDP enabled ports advertise information about the Extreme Networks switch to other switches on the interface and receives advertisements from other Extreme Networks switches. Information about other Extreme Networks switches is discarded after a timeout interval is reached without receiving another advertisement.

To disable EDP on specified ports, use the following command:
disable edp ports [ports | all]
To enable EDP on specified ports, use the following command:
enable edp ports [ports | all]
To clear EDP counters on the switch, use the following command:
clear counters edp
This command clears the following counters for EDP protocol data units (PDUs) sent and received per EDP port:
- Switch PDUs transmitted
- VLAN PDUs transmitted
- Transmit PDUs with errors
- Switch PDUs received
- VLAN PDUs received
- Received PDUs with errors
To view EDP port information on the switch, use the following command:

show edp {ports [all | ports] {detail}}
To view EDP information, use the following command:
show edp port ports detail
To configure the advertisement interval and the timeout interval, use the following command:
configure edp advertisment-interval timer holddown-interval timeout