1-170
Fabric OS Reference
Telnet Commands
1
portCfgLongDistance
Configure a port to support long distance links.
Synopsis
portCfgLongDistance portnumber [0|1|2]
Availability
admin
Description
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 km. 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:
0
Reconfigures port as a regular switch port. The number of buffers reserved for
the port supports links up to 10 km.
1
Level one long distance, up to 50 km. A total of 27 full size frame buffers at
1Gbps or 54 full size frame buffers at 2 Gbps are reserved for the port.
2
Level two long distance, up to 100 km. A total of 60 full size frame buffers at
1Gbps or 108 full size frame buffers at 2 Gbps 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.
Note:
The Extended Fabrics license key is required to use this command. Refer to the Distributed
Fabrics User’s Guide for more information.
Operands
This command has the following operands:
portnumber
The port number to be configured: 0-7 or 0-15. This operand is required.
0|1|2
This operand indicates the distance to the connected port. This operand is
optional. The valid values for this operand are:
0 = reconfigure port to be regular switch port
1 = level one long distance (up to 50 km)
2 = level two long distance (up to 100 km)
Limitations
When the edge switches are HP Brocade 2400 and 2800 switches then all switches on both ends
need the long distance fabric mode to be configured to 1.
A group of four adjacent ports that share a common pool of frame buffers (for example, ports 0 – 3
or 4 – 7) is called a “quad”. Since the total number of frame buffers in a quad is limited, if a port is
configured as a long distance port in a quad, the other ports in the quad have limitations on possible
configurations. Refer to the Distributed Fabrics User’s Guide for more information on limitations
in port configurations.
Summary of Contents for StorageWorks 8B - FC Entry Switch
Page 1: ...reference manual version 3 0 fabric os www hp com ...
Page 14: ...xiv Fabric OS Reference ...
Page 189: ...Fabric OS Reference 1 175 Telnet Commands 1 portCfgLongDistance portCfgTrunkport portCfgSpeed ...
Page 302: ...1 288 Fabric OS Reference Telnet Commands 1 ...
Page 342: ...Index 4 Fabric OS Reference ...
