Fabric OS Troubleshooting and Diagnostics Guide v6.4.0 (53-1001769-01, June 2010)

Fabric OS Troubleshooting and Diagnostics Guide 19

53-1001769-01

FC-FC routing connectivity

NOTE

Superping provides an indication if all ISLs are covered. If all the ISLs are not covered, you can

increase the coverage count and maximum retries to transmit, so that complete coverage of all ISLs

is achieved.

Consider the example below in which a few errors are recorded on ISLs 3/205-->2/25,

3/204-->2/27, 2/42-->101/3, and 2/1-->101/8. But a maximum of 100 percentage

errors are recorded on internal port 0/284 on domain 2, which is the potential faulty link.

ISL COVERAGE

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

SNO ISL STATUS

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

1 3/123[128]--> 165/96[128] SUCCESS(5/5)

2 3/205[128]--> 2/25[128] FAILURE(7/50)

3 3/204[128--> 2/27[128] FAILURE(11/50)

4 165/99[128]--> 101/16[128] SUCCESS(5/5)

6 2/42[128]--> 101/3[128] FAILURE(10/67)

7 2/1[128]--> 101/8[128] FAILURE(8/33)

INTERNAL PORT COVERAGE

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

SNO DOMAIN INTRNL_PORT STATUS

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

1 2[128] 0/272 SUCCESS(40/40)

2 2[128] 0/276 SUCCESS(44/44)

3 2[128] 0/280 SUCCESS(30/30)

4 2[128] 0/284 FAILURE(20/20) <== 100% failure

When an echo frame is dropped, all the ISLs in the path are marked as failed. It is not possible to

determine the exact ISL link that dropped the frame. Due to this, all the ISLs in the path will record

some failures. But the ISL with the actual error, has the maximum percentage of failures, as this

ISL when selected in any possible path causes the echo frame to be dropped and accumulates a

higher failure percentage.

Restrictions

• 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.