HP StorageWorks IP Storage Router - Manual (Page 70)

Software Overview
70 IP Storage Router SR2122-2 User Guide
The peer systems deployed for FCIP must be configured to use the TCP protocol.
TCP protocol uses standard TCP flow control and error recovery algorithms and
should be used if you require a standards-based FCIP implementation or connect
to a non-SR2122-2 peer.
With the TCP protocol one FCIP instance must be configured as the TCP client;
the other FCIP instance must be configured as the TCP server. The only difference
between FCIP instances configured as TCP client and TCP server is which FCIP
instance initiates the connection: the TCP client initiates the connection.
FCIP transports FC frames between SANs by performing the following actions
(
Figure 37 ):
■ Transporting FC frames between a SAN and an SR2122-2 that is deployed for
FCIP
■ Encapsulating FC frames in IP packets and transporting the IP packets to a
peer SR2122-2 that is deployed for FCIP
■ Receiving IP packets and transporting as FC frames between the peer
SR2122-2 and a connected SAN
Note that FC traffic is carried over the IP network in such a way that the FC fabric
and all FC devices on the fabric are unaware of the presence of the IP Network.
Figure 37: FCIP actions
IP
Transporting FC frames
between SAN and an
SR2122-2 deployed
for FCIP Encapsulating FC frames
in IP packets and
transporting IP packets
to peer SR2122-2 Transporting FC
frames between
an SR2122-2
deployed for FCIP
and SAN
SR2122-2 SR2122-2
FC hosts and
storage devices
FC hosts and
storage devices
SAN
SAN
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