HP StorageWorks MSA 2/8 - SAN Switch Reference Manual page 543

The option "VC Translation Link Init" is used to enable the long distance link
initialization sequence. By default this option is set to 0 (disabled).
An input of Ctrl-D cancels the configuration update.
When a port is configured to be a long distance port, the output of portshow
and switchshow will print the long distance level. In the portshow output,
the long distance level is indicated as follows,
In the switchshow output, the long distance mode is displayed as "Lx," where
x is the second letter in two letter distance level code described above.
Note:
modes. Trunking is supported for normal E_Ports (referred to as L0 in
portcfglongdistance command) with LWL media up to 5km at the full speed
permitted by the link. With LWL media, the throughput begins to fall off beyond 5km,
due to normal latency effects.
Refer to the
more information.
Fabric OS Version 3.1.x/4.1.x Reference Guide
LD: Dynamic long distance configuration. The buffer credits for the given
E-port are automatically configured based on the actual link distance. Up to a
total of 63 full size frame buffers will be reserved depending upon the
distance measured during E-port initialization.
L0 - normal
LE - standard <= 10km
L0.5(LM) - medium long <= 25km
L1 - long <= 50km
L2 - super long <= 100km
LD - auto
Trunking is not supported with LE, L1, and L2 portcfglongdistance
HP StorageWorks Extended Fabric Version 3.1.x/4.1.x User Guide
portCfgLongDistance
for
543