Product specifications

Deploying a Converged Storage Network Using a Cisco FCoE Switch
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FIGURE 6 FCOE MAPPING ILLUSTRATION (SOURCE FC-BB-5 REV 2.0)
iSCSI
The Internet Small Computer Systems Interface (iSCSI) is a SCSI mass storage transport that operates
between the Transport Control Protocol (TCP) and the SCSI Protocol Layers. The iSCSI protocol is
defined in RFC 3720 [iSCSI], which was finalized by the Internet Engineering Task Force (IETF) in
April 2004. A TCP/IP connection ties the iSCSI initiator and target session components together.
Network portals identified by their IP address and TCP port numbers define the endpoints of a
connection. iSCSI, is by nature, a lossless storage network because inherent in the iSCSI design is
recovery from dropped packets on over-subscribed, heavy network traffic patterns. iSCSI relies on
TCP/IP (or SCTP) for the retransmission of dropped Ethernet frames.