Brocade Fabric OS Troubleshooting and Diagnostics Guide v6.2.0 (53-1001187-01, April 2009)

16 Fabric OS Troubleshooting and Diagnostics Guide
53-1001187-01
Fibre Channel Router connectivity
2
On the edge Fabric OS switch, make sure that the source and destination devices are properly
configured in the LSAN zone before entering the fcPing command. This command performs the
following functions:
• Checks the zoning configuration for the two ports specified.
• Generates an ELS (extended link service) ECHO request to the source port specified and
validates the response.
• Generates an ELS ECHO request to the destination port specified and validates the response.
switch:admin> fcping 0x060f00 0x05f001
Source: 0x60f00
Destination: 0x5f001
Zone Check: Zoned
Pinging 0x60f00 with 12 bytes of data:
received reply from 0x60f00: 12 bytes time:501 usec
received reply from 0x60f00: 12 bytes time:437 usec
received reply from 0x60f00: 12 bytes time:506 usec
received reply from 0x60f00: 12 bytes time:430 usec
received reply from 0x60f00: 12 bytes time:462 usec
5 frames sent, 5 frames received, 0 frames rejected, 0 frames timeout
Round-trip min/avg/max = 430/467/506 usec
Pinging 0x5f001 with 12 bytes of data:
received reply from 0x5f001: 12 bytes time:2803 usec
received reply from 0x5f001: 12 bytes time:2701 usec
received reply from 0x5f001: 12 bytes time:3193 usec
received reply from 0x5f001: 12 bytes time:2738 usec
received reply from 0x5f001: 12 bytes time:2746 usec
5 frames sent, 5 frames received, 0 frames rejected, 0 frames timeout
Round-trip min/avg/max = 2701/2836/3193 usec
Regardless of the device’s zoning configuration, the fcPing command sends the ELS frame to the
destination port. A destination device can take any one of the following actions:
• Send an ELS Accept to the ELS request.
• Send an ELS Reject to the ELS request.
• Ignore the ELS request.
There are some devices that do not support the ELS ECHO request. In these cases, the device will
either not respond to the request or send an ELS reject. When a device does not respond to the
ELS request, further debugging is required; however, do not assume that the device is not
connected.
For details about the fcPing command, see the Fabric OS Command Reference.
Example of one device that accepts the request and another device that rejects the request:
switch:admin> fcping 10:00:00:00:c9:29:0e:c4 21:00:00:20:37:25:ad:05
Source: 10:00:00:00:c9:29:0e:c4
Destination: 21:00:00:20:37:25:ad:05
Zone Check: Not Zoned
Pinging 10:00:00:00:c9:29:0e:c4 [0x20800] with 12 bytes of data:
received reply from 10:00:00:00:c9:29:0e:c4: 12 bytes time:1162 usec
received reply from 10:00:00:00:c9:29:0e:c4: 12 bytes time:1013 usec
received reply from 10:00:00:00:c9:29:0e:c4: 12 bytes time:1442 usec
received reply from 10:00:00:00:c9:29:0e:c4: 12 bytes time:1052 usec
received reply from 10:00:00:00:c9:29:0e:c4: 12 bytes time:1012 usec
5 frames sent, 5 frames received, 0 frames rejected, 0 frames timeout