Specifications

portCfgLongDistance
543Fabric 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.
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,
■ L0 - normal
■ LE - standard <= 10km
■ L0.5(LM) - medium long <= 25km
■ L1 - long <= 50km
■ L2 - super long <= 100km
■ LD - auto
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: Trunking is not supported with LE, L1, and L2 portcfglongdistance
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
HP StorageWorks Extended Fabric Version 3.1.x/4.1.x User Guide for
more information.