Forward Error Correction On Long-Distance Links; Enabling Fec On A Long-Distance Link; Disabling Fec On A Long-Distance Link - HP StoreFabric SN6500B Administrator's Manual

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Forward error correction on long-distance links

Forward error correction on long-distance links
Forward error correction (FEC) on user ports is supported for LD and LS long-distance modes. Use
the portCfgLongDistance command with the -fecEnable or -fecDisable options to enable or disable
FEC, respectively, on a user port. Alternatively, you can use the portCfgFec command with the
--enable or --disable option as you would for any regular port.
For additional details about FEC, refer to

Enabling FEC on a long-distance link

1. Connect to the switch and log in using an account assigned to the admin role.
2. Enter the portCfgLongDistance command and include the -fecEnable option, or issue the
3. Enter the portCfgFec --show command to verify the configuration.
Example
switch:admin> portcfglongdistance 1/20 LS 1 -distance 122 –fecenable
FEC has been enabled.
Reserved Buffers =
Warning: port (132) may be reserving more credits depending on port speed.
switch:admin> portcfgfec --show 1/20
Forward Error Correction capable:
Forward Error Correction configured:

Disabling FEC on a long-distance link

1. Connect to the switch and log in using an account assigned to the admin role.
2. Enter the portCfgLongDistance command and include the -fecDisable option, or issue the
3. Enter the portCfgFec --show command to verify the configuration.
Example
switch:admin> portcfglongdistance 1/20 LS 1 -buffers 500 –fecdisable
FEC has been disabled.
Reserved Buffers =
Warning: port (132) may be reserving more credits depending on port speed.
switch:admin> portcfgfec --show 1/20
Forward Error Correction capable:
Forward Error Correction configured:
568
The following example enables buffer credit recovery on port 1/20.
switch:admin> portcfgcreditrecovery 1/20 -enable
portCfgFec command with the --enable option.
portCfgFec command with the --disable option.
"Enabling forward error correction (FEC)"
982
YES
ON
982
YES
OFF
on page 128.
Fabric OS Administrator's Guide
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