HP StorageWorks 4/16 Brocade SAN Glossary for Fabric OS v6.0.0 - Page 14

Inter-Chassis Link (ICL) A connection between two chassis, for example, between two Brocade DCX Backbones; uses dedicated ICL ports on each chassis. Inter-Fabric Link (IFL) A connection between a router and an edge fabric. Architecturally, these can be of type EX_Port-to-E_Port or EX_Port-to-EX_Port. Intermix Allows any unused bandwidth in a Class 1 connection to be used by Class 2 or Class 3. Inter-Switch Link (ISL) A connection between two switches using the E_Port. Intracabinet A specification for copper cabling that allows up to a 13-m (42-ft) distance within a single cabinet. IOD In Order Delivery. A parameter than when set, guarantees that frames get delivered in order, or they are dropped. IP Internet Protocol. The addressing part of TCP/IP. IPI Intelligent Peripheral Interface. IPsec IP security. A framework of open standards to ensure private, secure communications over IP networks through the use of cryptographic security services. IQN iSCSI Qualified Name. An iSCSI address that uniquely identifies an iSCSI device on the network, the equivalent of a Fibre Channel WWN. iSCSI Internet Small Computer System Interface. An IP-based storage networking standard. iSCSI Gateway Service A service that maps the SCSI protocol to the IP transport. This service projects iSCSI hosts onto the backbone fabric of a gateway switch. iSCSI PDU iSCSI Protocol Data Unit. A message between an iSCSI initiator and iSCSI target; has a Header and an optional Data Unit. iSCSI target gateway An intermediate device in a network that allows iSCSI initiators in an IP SAN to access and use storage in an FC SAN. ISL oversubscription ratio The ratio of the number of free ports (non-ISL) to the number of ISLs on a switch. Isolated E_Port Occurs when an ISL is online but not operational between switches because of overlapping domain IDs or no identical parameters such as E_D_TOVs. ISP Internet Service Provider. J JBOD Jitter Just a Bunch Of Disks. A term for disks typically configured as an Arbitrated Loop segment in a single chassis. A deviation in timing for a bit stream as it flows through a physical medium. Brocade SAN Glossary 1/29/2008 Page 14 of 29