BigIron RX Series Configuration Guide 100553-1001986-01Chapter37Enabling the Foundry Discovery Protocol (FDP) and ReadingCisco Discovery Protocol (CDP) PacketsThis chapter discusses the Discovery Protocol (FDP) – a protocol used by Brocade devices toadvertise themselves to other Brocade devices, and Cisco Discovery Protocol (CDP) – a protocolused by Cisco devices to advertise themselves to other Cisco devices. Brocade devices use thisprotocol to learn device and interface information for Cisco devices in the network.Using FDPFDP enables Brocade devices to advertise themselves to other Brocade devices on the network.When you enable FDP on a Brocade device, the device periodically advertises information includingthe following:• Hostname (device ID)• Product platform and capability• Software version• VLAN and Layer 3 protocol address information for the port sending the update.A Brocade device running FDP sends FDP updates on Layer 2 to MAC address 01-E0-52-CC-CC-CC.Other Brocade devices listening on that address receive the updates and can display theinformation in the updates.FDP is disabled by default.NOTEIf FDP is not enabled on a BigIron RX that receives an FDP update or the device is running a softwarerelease that does not support FDP, the update passes through the device at Layer 2.Configuring FDPThe following sections describe how to enable FDP and how to change the FDP update and holdtimers.Enabling FDP globallyTo enable a Brocade device to globally send FDP packets, enter the following command at theglobal CONFIG level of the CLI.BigIron RX(config)# fdp runSyntax: [no] fdp runThe feature is disabled by default.
