Fabric OS Reference Manual

150 Fabric OS Reference Manual
portCfgLongDistance
Configure a port to support long distance links.
Synopsis
portCfgLongDistance portnumber [0|1|2]
Availability admin The Extended Fabric license key is required to use this command.
Description Use this command to specify the allocation of enough full size frame
buffers on a particular port to support a long distance link of up to 100 km.
The port can be used as either an Fx_Port or an E_Port. The configuration
is saved in the non-volatile memory and is persistent across switch reboot
or power cycle.
When this command is invoked without the optional operand, you are
prompted to enter the long distance level number. The level value must be
0, 1, or 2:
0 Reconfigures port as a regular switch port. The number
of buffers reserved for the port supports links up to
10 km.
1 Level one long distance, up to 50 km. A total of 27 full
size frame buffers are reserved for the port.
2 Level two long distance, up to 100 km. A total of 60
full size frame buffers are reserved for the port.
You can cancel the configuration update by entering CTRL + D.
When a port is configured to be a long distance port, the output of
portShow
and
switchShow
displays the long distance level. In the
portShow
output, the long distance level is indicated as “
medium
” for
level 1 long distance, and “
long
” for level 2 long distance. In the
switchShow
output, the format is
Lx
, where
x
is the long distance level
number, except for level 0, which is not displayed in
switchShow
.
Note
For more information, see the Extended Fabrics User’s Guide for
more information.