Brocade Fabric OS Command Reference Manual Supporting Fabric OS v6.3.0 (53-1001337-01, July 2009)

Fabric OS Command Reference 57

53-1001337-01

bcastShow

Displays broadcast routing information.

Synopsis bcastshow

Description Use this command to display the broadcast routing information for all ports in the switch. The

broadcast routing information indicates all ports that are members of the broadcast distribution

tree: ports that are able to send and receive broadcast frames.

Normally, all F_Ports and FL_Ports are members of the broadcast distribution tree. The broadcast

path selection protocol selects the E_Port members of this tree in a manner designed to prevent

broadcast routing loops.

The following fields are displayed:

Group The multicast group ID of the broadcast group (always 256).

Member Ports A map of all ports in the broadcast tree.

Member ISL Ports A map of all E_Ports in the broadcast tree.

The broadcast routing information for the ports is displayed as a set of hexadecimal bit maps. Each

bit in a bit map represents a port, with the least significant bit in each row representing port 0, 32,

64, and so on.

Note The output from this command may vary, depending on the hardware platform.

The execution of this command is subject to Virtual Fabric or Admin Domain restrictions that may

be in place. Refer to chapter 1, "Using Fabric OS commands" and Appendix A, "Command

Availability" for details.

Operands none

Examples To display the broadcastshow routing information for all ports in the switch:

switch:admin> bcastShow

Group Member Ports Member ISL Ports

----------------------------------------

256 0x00012083 0x00002080

0x00000440 0x00000400

0x00770000 0x00700000

0x00008200 0x00000000

0x00000001 0x00000000

In this example, from a switch with 128 ports, the member ports consist of ports 7, 13, 42, 84, 85,

and 86. The final Member Ports bit set represents the embedded port (frames sent to be handled

by firmware) and is typically set.