Fabric OS reference guide
186
Fabric OS 3.x Document Addendum
Source route
The source route option allows the user to specify a sequence of switches or ports (or areas)
that the pathinfo frame has to follow to reach the destination. Therefore, the path might be
different from the one the actual traffic from source to destination takes.
The source route is expressed as a sequence of switches, a sequence of output ports (or areas),
or a combination thereof. The next hop in the source route is described by either the output
port (or area) to be used to reach the next hop or the domain ID of the next hop.
The source route can specify a partial route from source to destination (in which case the
remaining hops are chosen as the path from the input port or area on the first hop not listed in
the source route to the destination), as a full route, or as an arbitrary route across the fabric.
The maximum hop count is enforced.
If the source route does not specify all the switches along a section of the path, a further option
allows you to specify a strict versus 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 case of a loose source route, the switches in between are reported. The
concepts of strict and loose route apply to the portions of the path described by domains, not to
the part described by output ports or areas.
Operands
The following operands are allowed:
Without operands,
pathinfo
is an interactive command in which the following parameters
can be provided:
domain
The ID of the destination domain.
source port
The port (or area) whose path to the destination domain is
sought. The embedded port (
-1
) is used by default. For a
switch with blades, the destination is specified as the area;
otherwise, it is the port. If the source port is given as
-1
,
with no additional arguments, basic statistics are displayed
for the route.
destination port
A port on the destination switch. pathinfo returns the state
of the port (or area). The embedded port (
-1
) is used by
default, or if the user specifies a destination port that is not
active. For a switch with blades, the destination is specified
as the area; otherwise, it is the port.
-r
Displays the reverse path, in addition to the forward path, in
the output.
max hops
The maximum number of hops that the pathinfo frame is allowed
to traverse. Default:
25
.
domain
The ID of the destination domain; mandatory, no default.
Summary of Contents for StorageWorks 2/16 - SAN Switch
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Page 16: ...Advanced performance monitor user guide 16 Fabric OS 3 x Document Addendum ...
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