HP StorageWorks Fabric OS 5.3.x administrator guide (5697-0244, November 2009)

368 Administering ISL Trunking
3. Change LD/L1/L2/L0.5 back to L0 (of non-buffer limited ports).
4. If you are in buffer-limited mode on the LD port, then increase the estimated distance.
These changes are implemented only after disabling (portDisable) and enabling (portEnable) the
buffer-limited port (or buffer-limited switch).
Reconfiguring a port to LD from another mode can result in the port being disabled for lack of buffers–this
does not apply to the SAN Switch 4/32, SAN Switch 4/32B and 4/256 SAN Director (using FC4-16 and
FC4-32 port blades). If this happens:
• In Fabric OS v4.2.x, reconfigure the disabled LD port back to the original mode.
• In Fabric OS v4.4.0 and later, specify a slightly shorter distance for the desired_distance
parameter in the portCfgLongDistance command.