Brocade Communications Systems 8 Command Reference Manual page 582

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pathInfo
Reverse path
Source route
Note 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 This command has the following operands:
destination_switch
source_port
550
Frames The total number of frames.
Errors The total number of errors that may have caused a frame not to be received
correctly. This includes cyclic redundancy check (CRC) errors, bad
end-of-frame (EOF) errors, frame truncated errors, frame-too-short errors, and
encoding errors inside a frame.
The path from port A on switch X to port B on switch Y may be different from
the path from port B to port depending on the links traversed between a given
sequence of switches, or the reverse path may involve different switches. The
-r option displays routing and statistics information for the reverse path in
addition to those for the direct path.
The source route option allows you to specify a sequence of switches or ports,
which the pathInfo frame has to traverse to reach the destination. Therefore,
the path specified may be different from the one used by actual traffic.
The source route is expressed as a sequence of switches, a sequence of
output ports, or a combination of both. The next hop in the source route is
described by either the output port to be used to reach the next hop, or the
domain ID of the next hop.
The source route can specify a full route from source to destination or a
partial route. In a partial route the remaining hops are chosen as the path
from the input port on the first hop not listed in the source route to the
destination. The maximum hop count is enforced in both cases.
If the source route does not specify all the switches along a section of the
path, you can specify a strict or a loose path. A strict source route requires
that only the specified switches are reported in the path description. If two
switches are specified back-to-back in the source route descriptor but are not
directly connected, the switches in-between are ignored. In a loose source
route, the switches in-between are reported. The concepts of strict and loose
route apply only to the portions of the path described by domains, not to the
part described by output ports.
Specifies the destination switch. To obtain path info in a Layer 2 fabric, the
destination switch can be identified by its Domain ID, by the switch WWN, or
by the switch name. To obtain path info across remote fabrics connected
through an FC router, the destination switch must be identified by its Domain
ID. Identifying the switch by name or WWN is not accepted. This operand is
optional; if omitted, the command prompts for input interactively.
Specifies the port whose path to the destination domain is traced, specified
as the port index. The embedded port (-1) is the default. The embedded port
can be selected manually by entering the value of MAX_PORT. MAX_PORT
stands for the maximum number of ports supported by the local switch.
Fabric OS Command Reference
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