Reference Guide

248 Brocade Fabric OS Command Reference
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fcPing
Logical Fabrics: When executed in a Logical Fabric from a switch to a destination device connected through
the base fabric, SuperPing exercises all paths in the base fabric along with the ISLs in the logical fabric. The
path output indicates the LISLs and the base switch. Refer to the Examples section for an illustration.
Notes The ELS Echo may not be supported on all devices. In such cases, the response could be either an ELS reject or a
request timeout.
By default, fcPing sends five ELS Echo requests to each port. When a device does not respond to the ELS Echo
request, further debugging may be needed to determine, whether the device does not support ELS Echo, or
whether the request is rejected for some other reason. Do not assume that the device is not connected.
If a fabric reconfiguration occurs while SuperPing is in progress, the command reports an error message. Exit the
command and rerun the test after the fabric becomes stable again.
SuperPing and the fcPing command are not supported for the simulated devices that exist on SIM ports. Use the
flow command to enable the SIM ports.
The execution of this command is subject to Virtual Fabric restrictions that may be in place. Refer to "Using Fabric
OS Commands" and "Command Availability" for details.
Operands This command has the following operands:
destination
Specifies the destination as follows.
• When using fcPing between a source and a destination, specify the destination as port
WWN or a node WWN.
• When using fcPing to ping a single device, specify the destination as a PID, a switch
WWN, a domain ID, or a switch domain controller ID.
• When using fcPing with the --allpaths option, specify the destination as a PID, a switch
WWN, or a domain ID.
source
Specifies the source port ID, port WWN, or node WWN. This operand is optional; it is not
valid with the SuperPing command (--allpaths).
The following operands are valid only when fcPing is executed without the --allpaths option (legacy mode):
--number frames
Specifies the number of ELS Echo requests to send. The default value is 5.
--length size
Specifies the frame size of the requests in bytes. The default value is 0. Without data, the
Fibre Channel Echo request frame size is 12 bytes. The total byte count includes four bytes
from the Echo request header and eight bytes from the timestamp. The maximum allowed
value is 2,036 bytes. The length must be word-aligned.
--interval wait
Specifies the interval, in seconds, between successive ELS Echo requests. The default value
is 0 seconds.