Technical data

FastIron Ethernet Switch Administration Guide 177

53-1002637-02

Chapter

Foundry Discovery Protocol (FDP) and Cisco Discovery

Protocol (CDP) Packets

Table 7 lists individual Brocade switches and the discovery protocols they support. These features

are supported in the Layer 2 and Layer 3 software images, except where explicitly noted.

This chapter contains the following sections:

•FDP Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177

•CDP packets. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183

FDP Overview

The Foundry Discovery Protocol (FDP) 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 including the following:

• Hostname (device ID)

• Product platform and capability

• Software version

• VLAN and Layer 3 protocol address information for the port sending the update. IP, IPX, and

AppleTalk Layer 3 information is supported.

A Brocade device running FDP sends FDP updates on Layer 2 to MAC address 00-00-00-CC-CC-CC.

Other Brocade devices listening on that address receive the updates and can display the

information in the updates. Brocade devices can send and receive FDP updates on Ethernet

interfaces.

FDP is disabled by default.

NOTE

If FDP is not enabled on a Brocade device that receives an FDP update or the device is running a

software release that does not support FDP, the update passes through the device at Layer 2.

TABLE 7 Supported discovery protocol features

Feature FSX 800

FSX 1600

FCX ICX 6610 ICX 6430 ICX 6450

Foundry Discovery Protocol (FDP) for IPv4

and IPv6 traffic

Yes Yes Yes Yes Yes

Cisco Discovery Protocol (CDP) for IPv4

and IPV6 traffic

Yes Yes Yes Yes Yes