HP StorageWorks Fabric OS 6.1.1 administrator guide (5697-0235, December 2009)

Fabric OS 6.1.1 administrator guide 235
Inter-chassis Link behavior between two HP StorageWorks DC Directors
An Inter-chassis link (ICL) is a licensed feature used to interconnect two DC Directors; there are two ICL
connector ports ICL0 and ICL1 on each core blade, each aggregating a set of 16 ports. Thus, each core
blade provides 32 ICL ports and there are 64 ICL ports available for the entire DC Director chassis. All of
the ICL connector ports must be connected to the same two DC Director chassis.
ICL ports can be used only with an ICL license. For more information on how license enforcement occurs,
see ”Licensed features” on page 34. After the addition or removal of a license, the license enforcement is
performed on the ICL ports only when you issue the portDisable or portEnable commands on the switch
for the ports. All ICL ports must be disabled, and then re-enabled for the license to take effect. An ICL
license must be installed on both platforms forming the ICL connection.
ICL connector ports do not have SFPs, and the connectors used on the ICLs are proprietary. There are two
LEDs—a status LED and an attention LED for each ICL connector port. Table 68 describes the behavior of
the LEDs.
The ICL ports appear as regular FC ports, with some restrictions. All port parameters associated with ICL
ports are static and all portCfg commands are blocked from changing any of the ICL port parameters.
The only management associated with ICL ports and cables is monitoring the status of the LEDs on the ICL
ports and any maintenance if the ATTENTION LED is blinking yellow.
When you connect two DC Director platforms, the following features are supported:
• 8 Gbps speed
• Trunking
• Credit sharing
• QoS
Table 68 Led behavior
LED Color Description Action
Status Black No connection with peer blade. NA
Green ICL connection with peer blade is
good.
NA
Attention Black ICL is fully operational. NA
Blinking Yellow One or more links in the ICL
connection is NOT operational.
Reconnect the ICL cables
or replace the ICL
cables.