Setting The Extended Fabric Port Configuration - HP StorageWorks 8B - FC Entry Switch User Manual

Setting the Extended Fabric Port Configuration

portCfgLong
Distance
Synopsis
Availability
Description
Operands
Limitations
Distributed Fabrics User's Guide
You can configure a port to support long distance links by using the
portCfgLongDistance telnet command.
Configures a port to support long distance links.
portCfgLongDistance port_number <long_distance_level>
Administrator. An Extended Fabrics license key is required to see this command.
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 kilometers. 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 one of the following:
Level Effect
0 Reconfigures port as a normal switch port. The number of buffers reserved for
the port supports links up to 10 kilometers.
1 Level one long distance, up to 50 kilometers. A total of 27 full size frame buffers
are reserved for the port.
2 Level two long distance, up to 100 kilometers. 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.
The following operand is required:
port_number
The following operand is optional:
long_distance_level 0 = reconfigure port to be regular switch port
When the linking switch is an HP Brocade 2400/2800 or FC 6164 switch then all switches
on both ends need to be configured for long distances. A group of four adjacent ports that
share a common pool of frame buffers (for example, ports 0 – 3 or 4 – 7) are called a
"quad". Since the total number of frame buffers in a quad is limited, if one of the ports in
the quad is configured as an L2 long distance port, none of the remaining ports in the quad
can be a long distance port; they must all be level 0 ports. In order to have a long distance
port take effect, all switches in the fabric must be configured to run in long distance fabric
mode (in other words, the long distance fabric mode bit must be "on", or set to 1).
Using Extended Fabrics
Number of port to be configured: 0-7 or 0-15.
1 = level one long distance (up to 50 kilometers)
2 = level two long distance (up to 100 kilometers)
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