HP StorageWorks MSA 2/8 - SAN Switch Reference Manual page 542

Fabric OS Commands
"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.
The vc_translation_link_init operand only applies to long distance
setup, it does not affect normal link. It is added to ensure the long distance link
initialization sequence. It is not required for long distance, but may be useful
when initiating L1 and L2 links.
Note:
command. Refer to the
Guide
Description V4.1.x
Use this command to allocate enough full size frame buffers on a particular port to
support a long distance link up to 100km. The port can only be used as an E_Port.
The configuration is saved in the non-volatile memory and is persistent across
switch reboot or power cycle.
The value of distance_level can be one of the following (the numerical
value representing each distance_level is shown in parentheses):
542
The Extended Fabrics license key is required to use the full functionality of this
HP StorageWorks Extended Fabric Version 3.1.x/4.1.x User
for more information.
L0 (0): Re-configure the port to be a regular switch port. The number of
buffers reserved for the port supports up to 10km links.
L0.5: Level 0.5 (switchshow and portcfgshow show two letter code
as LM) long distance, up to 25km. A total of 15 or 30 full size frame buffers
will be reserved for the port at speeds of 1 Gbit/sec and 2 Gbit/sec
respectively.
L1 (1): Level one long distance, up to 50km. A total of 24 or 50 full size frame
buffers will be reserved for the port at speeds of 1 Gbit/sec and 2 Gbit/sec
respectively.
L2 (2): Level two long distance, up to 100km. A total of 58 or 63 full size
frame buffers will be reserved for the port at speeds of 1 Gbit/sec and 2
Gbit/sec respectively.
LE (3): Level E mode is for E ports for distances beyond 5km and up to 10km
especially for 2G link speeds. A total of 7 or 13 full size frame buffers will be
reserved for the port at speeds of 1 Gbit/sec and 2 Gbit/sec respectively. LE
does not require extended fabric license.
Fabric OS Version 3.1.x/4.1.x Reference Guide