Using Fc Ping; Using Fc Traceroute - Cisco 9134 - MDS Multilayer Fabric Switch Troubleshooting Manual

Appendix B Troubleshooting Tools and Methodology
S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m
These tools have been migrated to Fibre Channel for use with the Cisco MDS 9000 Family switches and
are called FC ping and FC traceroute. You can access FC ping and FC traceroute from the CLI or from
Fabric Manager.
This section contains the following topics:
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Using FC Ping

The FC ping tool:
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FC ping allows you to ping a Fibre Channel N port or end device. (See
FCID or Fibre Channel address, you can send a series of frames to a target N port. Once these frames
reach the target device's N port, they are looped back to the source and a time-stamp is taken. FC ping
helps you to verify the connectivity to an end N port. FC ping uses the PRLI Extended Link Service, and
verifies the presence of a Fibre Channel entity in case of positive or negative answers.
The FC Ping feature verifies reachability of a node by checking its end-to-end connectivity.
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Example B-1

Using FC Traceroute

Use the FC Trace feature to:
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FC traceroute identifies the path taken on a hop-by-hop basis and includes a timestamp at each hop in
both directions. (See
connectivity problems or verify the path taken toward a specific destination. You can use FC traceroute
to test the connectivity of TE ports along the path between the generating switch and the switch closest
to the destination.
Choose Tools > Traceroute on Fabric Manager or use the fctrace CLI command to access this feature.
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Using FC Ping, page B-5
Using FC Traceroute, page B-5
Checks end-to-end connectivity.
Uses an pWWN or FCID.
Choose Tools > Ping to access FC ping using Fabric Manager.
Invoke the FC ping feature using the CLI by providing the FC ID or the destination port WWN
information in the following ways:
switch# fcping pwwn 20:00:00:2e:c4:91:d4:54
switch# fcping fcid 0x123abc
FC Ping Command
switch# fcping fcid 0xef02c9 vsan 1
28 bytes from 0xef02c9
28 bytes from 0xef02c9
28 bytes from 0xef02c9
28 bytes from 0xef02c9
28 bytes from 0xef02c9
5 frames sent, 5 frames received, 0 timeouts
Round-trip min/avg/max = 347/571/1408 usec
Trace the route followed by data traffic.
Compute inter-switch (hop-to-hop) latency.
Example
time = 1408 usec
time = 379 usec
time = 347 usec
time = 361 usec
time = 363 usec
B-2.) FC ping and FC traceroute are useful tools to check for network
Cisco MDS 9000 Family Troubleshooting Guide, Release 3.x
Using Cisco MDS 9000 Family Tools
Example B-1.) By specifying the
B-5