Specifications

portCfgLongDistance
545Fabric OS Version 3.1.x/4.1.x Reference Guide
Limitations
Since the total number of frame buffers is limited in quad, when one of the ports in
the quad is configured as a long distance port, all remaining ports must be level
zero ports only (i.e., none of the remaining ports in the quad can be a long distance
port). Further more, if one port is configured as a level 2 long distance port, none
of the remaining ports in the quad can be used as an E_Port.
A quad is defined as a group of four adjacent ports that share a common pool of
frame buffers. Port 0-3 belong to a quad, so do port 4-7, etc.
Refer to the HP StorageWorks Extended Fabric Version 3.1.x/4.1.x User Guide for
more information on limitations in port configurations.
Example
The following example is for a 50 km link on a port in a V3.1.x switch:
distance_level
(V4.1.x only)
This operand indicates the distance to the
connected port. This operand is required. The
valid values for this operand are:
L0: Re-configure the port to be a regular
switch port. The number of buffers reserved
for the port supports up to 10km links.
LE: Level E mode is for E ports for distances
beyond 5km and up to 10km especially for
2G link speeds.
L0.5 (LM): Level 0.5 long distance, up to
25km.
L1: Level one long distance, up to 50km. A
total of 26 full size frame buffers will be
reserved for the port.
L2: Level two long distance, up to 100km. A
total of 60 full size frame buffers will be
reserved for the port.
LD: Automatic long distance configuration.
VC_Translation_Link_Init
(V4.1.x only)
Specify 1 to activate long distance link
initialization sequence. Specify 0 to
deactivate this mode. The default value is 0
(disabled). This operand is optional.
switch:admin> portCfgLongDistance 3, “L1”
done.