Administrator Guide

FCoE-to-FC bridging functionality. The upstream N ports on an M1000e can connect to the same or multiple
fabrics.
Using an FCoE map applied to downstream (server-facing) Ethernet ports and upstream (fabric-facing) FC
ports, you can configure the association between a SAN fabric and the FCoE VLAN that connects servers over
the NPIV proxy gateway to FC switches in the fabric. An FCoE map virtualizes the upstream SAN fabric as an
FCF to downstream CNA ports on FCoE-enabled servers as follows:
• As soon as an FC N port comes online (no shutdown command), the NPG starts sending FIP multicast
advertisements, which contain the fabric name derived from the 64-bit worldwide name (WWN) of the
principal SAN switch. (The principal switch in a fabric is the FC switch with the lowest domain ID.)
• When you apply the FCoE map to a server-facing Ethernet port in ENode mode, ACLs are automatically
configured to allow only FCoE traffic from servers that perform a successful FLOGI on the FC switch. All
other traffic on the VLAN is denied.
You can specify one or more upstream N ports in an FCoE map. The FCoE map also contains the VLAN ID of
the dedicated VLAN used to transmit FCoE traffic between the SAN fabric and servers.
NPIV Proxy Gateway: Protocol Services
The FN IOM with the FC Flex IO module NPG provides the following protocol services:
• Fibre Channel service to create N ports and log in to an upstream FC switch.
• FCoE service to perform:
• Virtualization of FC N ports on an NPG so that they appear as FCoE FCFs to downstream servers.
• 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.
FC Flex IO Modules 1091