HP StorageWorks 2/128 HP StorageWorks Fabric OS 5.2.x administrator guide (569 - Page 331
To con an extended ISL, slotnumber, distance_level, vc_translation_link_init, desired_distance
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To configure an extended ISL 1. Connect to the switch and log in as admin. 2. If the fabric contains HP StorageWorks 1 GB extended ISLs, use the switchDisable command to disable the switch and then use the configure command to set the fabric-wide configuration parameter fabric.ops.mode.longDistance to 1 on all switches in the fabric. 3. Enter the portCfgLongDistance command, using the following syntax: p[odretsicrfegdl_odnigstdainsctea]nce [slotnumber/]portnumber [distance_level] [vc_translation_link_init] slotnumber Specify the slot number for SAN Director 2/128 and 4/256 SAN Director. This option is not applicable to fixed-port switches. The slot number must be followed by a slash ( / ) and the port number. portnumber Specify the port number. distance_level Specify the ISL mode to be set on the port (refer to Table 67). vc_translation_link_init This extended link initialization sequence, which is an enhanced link reset protocol, avoids excessive resetting of ports. By default this option is set to 1 (enabled). To prevent fabric segmentation, this option must be set to 0 (disabled) when connecting to switches running Fabric OS versions earlier than v3.0.2c or v4.0.2. It must be set to 1 (enabled) when configuring a trunk over extended fabrics. desired_distance Required for a port configured for LD mode. Specify the desired distance, in kilometers, for the link. The specified value is the upper limit for calculating buffer availability for the port. If the measured distance is more than the specified desired_distance, the port is allocated the number of buffers required by the specified desired distance. (Fabric OS versions earlier than v4.4.0 do not support this parameter.) Note: For 4/256 SAN Director with FC4-16 or FC4-32 port blades, ports will be shown as buffer limited. 4. Repeat step 3 for the remote extended ISL port. Both the local and remote extended ISL ports must be configured to the same distance level. When the connection is initiated, the fabric will reconfigure. The following example configures slot 1, port 1 for the LD link distance mode, enables the extended link initialization sequence, and sets the desired distance to 50 kilometers: switch:admin> portcfglongdistance 1/1 LD 1 50 Fabric OS 5.2.x administrator guide 331
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