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● NPIV service to perform the association and aggregation of FCoE servers to upstream F ports on core switches (through N
ports on the NPG). Conversion of server FLOGIs and FDISCs, which are received over FN IOM with the FC Flex IO module
ENode ports, are converted into FDISCs addressed to the upstream F ports on core switches.
NPIV Proxy Gateway Functionality
The FN IOM with the FC Flex IO module NPG provides the following functionality in a storage area network:
● FIP Snooping bridge that provides security for FCoE traffic using ACLs (see FCoE Transit chapter).
● FCoE gateway that provides FCoE-to-FC bridging. N-port virtualization using FCoE maps exposes upstream F ports as FCF
ports to downstream server-facing ENode ports on the NPG (see FCoE Maps).
NPIV Proxy Gateway: Terms and Definitions
The following table describes the terms used in an NPG configuration on the FN IOM with the FC Flex IO module.
Table 126. FN IOM with the FC Flex IO module NPIV Proxy Gateway: Terms and Definitions
Term Description
FC port Fibre Channel port on the FN IOM with the FC Flex IO module FC module that operates
in autosensing, 2, 4, or 8-Gigabit mode. On an NPIV proxy gateway, an FC port can be
used as a downlink for a server connection and an uplink for a fabric connection.
F port Port mode of an FC port connected to an end node (N) port on the FN IOM with the FC
Flex IO module NPIV proxy gateway.
N port Port mode of the FN IOM with the FC Flex IO module FC port that connects to an F port
on an FC switch in a SAN fabric. On the FN IOM with the FC Flex IO module NPIV proxy
gateway, an N port also functions as a proxy for multiple server CNA-port connections
ENode port Port mode of a server-facing FN IOM with the FC Flex IO module Ethernet port that
provides access to FCF functionality on a fabric.
CNA port N-port functionality on an FCoE-enabled server port. A converged network adapter
(CNA) can use one or more Ethernet ports. CNAs can encapsulate Fibre Channel frames
in Ethernet for FCoE transport and de-encapsulate Fibre Channel frames from FCoE to
native Fibre Channel.
DCB map Template used to configure DCB parameters, including priority-based flow control (PFC)
and enhanced transmission selection (ETS), on CEE ports.
Fibre Channel fabric Network of Fibre Channel devices and storage arrays that interoperate and
communicate.
FCF Fibre Channel forwarder: FCoE-enabled switch that can forward FC traffic to both
downstream FCoE and upstream FC devices. An NPIV proxy gateway functions as an
FCF to export upstream F port configurations to downstream server CNA ports.
FC-MAP FCoE MAC-address prefix — The unique 24-bit MAC address prefix in FCoE packets
used to generate a fabric-provided MAC address (FPMA). The FPMA is required to send
FCoE packets from a server to a SAN fabric.
FCoE map Template used to configure FCoE and FC parameters on Ethernet and FC ports in a
converged fabric.
FCoE VLAN VLAN dedicated to carrying only FCoE traffic between server CNA ports and a SAN
fabric. (FCoE traffic must travel in a VLAN.) When you apply an FCoE map on a port,
FCoE is enabled on the port. All non-FCoE traffic is dropped on an FCoE VLAN.
954 FC Flex IO Modules