Fc-Fc Routing Connectivity; Generating And Routing An Echo - Brocade Communications Systems StoreFabric SN6500B Troubleshooting Manual

2
* Fabric OS has detected frequent switch reboot condition. *
* Following actions can be taken to recover the switch: *
* - take off or replace the bad blades. *
* - use supportsave to collect supportsave data. *
*
* *
**************************************************************
Please change passwords for switch default accounts now.
Use Control-C to exit or press 'Enter' key to proceed.

FC-FC routing connectivity

This section describes tools you can use to troubleshoot Fibre Channel routing connectivity and
performance.

Generating and routing an ECHO

The FC-FC Routing Service enables you to route the ECHO generated when an fcPing command is
issued on a switch, providing fcPing capability between two devices in different fabrics across the
FC router.
The fcPing command sends a Fibre Channel ELS ECHO request to a pair of ports. It performs a
zone check between the source and destination. In addition, two Fibre Channel Extended Link
Service (ELS) requests are generated. The first ELS request is from the domain controller to the
source port identifier. The second ELS request is from the domain controller to the destination port
identifiers. The ELS ECHO request elicits an ELS ECHO response from a port identifier in the fabric
and validates link connectivity.
Use the fcPing command to validate link connectivity to a single device or between a pair of
devices.
ATTENTION
There are some devices that do not support the ELS ECHO request. In these cases, the device either
does 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.
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:
•
•
•
switch:admin> fcping 0x020800 22:00:00:04:cf:75:63:85
Pinging 0x020800 with 12 bytes of data:
16

FC-FC routing connectivity

Checks the zoning configuration for the two ports specified.
Generates an ELS 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.
Source: 0x020800
Destination: 22:00:00:04:cf:75:63:85
Zone Check: Zoned
received reply from 0x020800: 12 bytes time:1159 usec
received reply from 0x020800: 12 bytes time:1006 usec
received reply from 0x020800: 12 bytes time:1008 usec
received reply from 0x020800: 12 bytes time:1038 usec
Fabric OS Troubleshooting and Diagnostics Guide
53-1002751-01