Route And Statistical Information - HP SN3000B Troubleshooting Manual

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FC-FC routing connectivity
Restrictions
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Route and statistical information

The pathInfo command displays routing and statistical information from a source port index on the
local switch to a destination port index on another switch. This routing information describes the
full path that a data stream travels between these ports, including all intermediate switches.
ATTENTION
Using the pathInfo command when exchange-based routing is turned on can provide different paths
with each attempt.
The routing and statistics information are provided by every switch along the path, based on the
current routing-table information and statistics calculated continuously in real time. Each switch
represents one hop.
Use the pathInfo command to display routing information from a source port on the local switch to
a destination port on another switch. The command output describes the exact data path between
these ports, including all intermediate switches.
When using this command in Fabric OS v6.3.0 across fabrics connected through an FC router, the
command represents backbone information as a single hop. The command captures details about
the FC router to which ingress and egress EX_Ports are connected, but it hides the details about
the path the frame traverses from the ingress EX_Ports to the egress EX_Ports in the backbone.
To use pathInfo across remote fabrics, you must specify both the fabric ID (FID) and the domain ID
of the remote switch. You cannot use the command to obtain source port information across
remote FCR fabrics. When obtaining path information across remote fabrics, the destination switch
must be identified by its domain ID. Identifying the switch by name or WWN is not accepted.
Use the pathInfo command to display basic path information to a specific domain in command line
mode:
switch:admin> pathinfo 91
20
Fabric reconfiguration cannot occur while using the superping tool. It is assumed that the
fabric is stable before the fcPing --allpaths command is executed.
The control path for interswitch communication should be available, even if the data path for
device to device communication may have resource starvation.
When executed in a fabric with trunk ports, only the trunk master index is output to the user i.e.
individual coverage statistics of each trunk-member is not available.
All switches must have Fabric OS v6.3.0 or later.
Superping requires that the FC Echo ELS frame is supported by end-devices.
In TI Zones, when failover is disabled and superping is executed to destination device included
in the TI Zone then superping displays failures on all ISLs that are not part of the TI Zone. Also,
when superping is executed to a device that is not present in a TI Zone, failures are shown on
all ISLs that are part of any TI Zone.
This feature is not supported in interopMode 2 or 3.
In frame redirection configurations, where there is a physical host, physical target, virtual
initiator and virtual target; superping only identifies the path from the physical host to the
physical target regardless if the data path consists of the path from physical target to virtual
target through the virtual initiator.
Fabric OS Troubleshooting and Diagnostics Guide
53-1002150-02