Dell Brocade G620 Brocade 8.0.1 Fabric OS Troubleshooting and Diagnostics Guid - Page 29

Superping, Exercises all ISL links in the base fabric for a logical fabric configuration.

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General Troubleshooting Superping Superping refers to the fcPing --allpaths command, which is a diagnostic tool used to test all least-cost ISLs between a source and destination switch. When you run the command, you are provided with a list of all available least-cost paths from a source domain to a destination device. Superping isolates links with potential failures so that you can investigate these ISLs to determine the exact links. Superping works by sending ECHO frames to a destination device and outputting the status of each ISL it traverses whether or not the response from the destination device is received. Each ECHO frame can choose any path from multiple available paths in the fabric to reach the destination device. This utility allows you to do the following: ∙ Run a sanity test that exercises all the ISLs and internal links in different paths that route to the destination device. ∙ Determines the least-cost path to aid in designing fabric redundancy. ∙ Determines the specific ISLs and internal links with failures. ∙ Exercises all ISL links in the base fabric for a logical fabric configuration. The number of actual paths covered when using the superping feature depends on two other parameters that you can specify optionally. When you issue the fcPing --allpaths command without any other options, Superping covers all ISLs in the routes between source to destination, as shown in Figure 1 . Brocade Fabric OS Troubleshooting and Diagnostics Guide 53-1004126-01 29

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Superping
Superping refers to the
fcPing --allpaths
command, which is a diagnostic tool used to test all least-cost ISLs between a source and
destination switch. When you run the command, you are provided with a list of all available least-cost paths from a source domain to a
destination device. Superping isolates links with potential failures so that you can investigate these ISLs to determine the exact links.
Superping works by sending ECHO frames to a destination device and outputting the status of each ISL it traverses whether or not the
response from the destination device is received. Each ECHO frame can choose any path from multiple available paths in the fabric to
reach the destination device. This utility allows you to do the following:
∙
Run a sanity test that exercises all the ISLs and internal links in different paths that route to the destination device.
∙
Determines the least-cost path to aid in designing fabric redundancy.
∙
Determines the specific ISLs and internal links with failures.
∙
Exercises all ISL links in the base fabric for a logical fabric configuration.
The number of actual paths covered when using the superping feature depends on two other parameters that you can specify optionally.
When you issue the
fcPing --allpaths
command without any other options, Superping covers all ISLs in the routes between source to
destination, as shown in
Figure 1
.
General Troubleshooting
Brocade Fabric OS Troubleshooting and Diagnostics Guide
53-1004126-01
29