Users Guide

By default, no PFC and ETS settings in a DCB map are applied to FN IOM with the FC Flex IO module Ethernet ports when they are
enabled. On the FN IOM with the FC Flex IO module NPG, you must congure PFC and ETS parameters in a DCB map and then apply the
map to server-facing Ethernet ports (see the “Creating a DCB map" section).
FCoE Maps
An FCoE map is used to identify the SAN fabric to which FCoE storage trac is sent. Using an FCoE map, the FN IOM with the FC Flex IO
module NPG operates as an FCoE-FC bridge between an FC SAN and FCoE network by providing FCoE-enabled servers and switches
with the necessary parameters to log in to a SAN fabric.
An FCoE map applies the following parameters on server-facing Ethernet and fabric-facing FC ports on the FN IOM with the FC Flex IO
module:
• The dedicated FCoE VLAN used to transport FCoE storage trac.
• The FC-MAP value used to generate a fabric-provided MAC address.
• The association between the FCoE VLAN ID and FC fabric ID where the desired storage arrays are installed. Each Fibre Channel fabric
serves as an isolated SAN topology within the same physical network.
• The priority used by a server to select an upstream FCoE forwarder (FCF priority)
• FIP keepalive (FKA) advertisement timeout
NOTE:
In each FCoE map, the fabric ID, FC-MAP value, and FCoE VLAN must be unique. Use one FCoE map to access one SAN fabric. You
cannot use the same FCoE map to access dierent fabrics.
When you congure the FN IOM with the FC Flex IO module as an NPG, FCoE transit with FIP snooping is automatically enabled and
congured using the parameters in the FCoE map applied to server-facing Ethernet and fabric-facing FC interfaces (see FIP Snooping on
an NPIV Proxy Gateway).
After you apply an FCoE map on an FC port, when you enable the port (no shutdown), the NPG starts sending FIP multicast
advertisements on behalf of the FC port to downstream servers in order to advertise the availability of a new FCF port on the FCoE VLAN.
The FIP advertisement also contains a keepalive message to maintain connectivity between a SAN fabric and downstream servers.
Conguring an NPIV Proxy Gateway
Prerequisite: Before you congure an NPIV proxy gateway (NPG) with the FC Flex IO module on the FN IOM, ensure that the following
features are enabled.
• DCB is enabled by default with the FC Flex IO module on the FN IOM.
• Autonegotiated DCBx is enabled for converged trac by default with the FC Flex IO module Ethernet ports on all FN IOM.
• FCoE transit with FIP snooping is automatically enabled when you congure Fibre Channel with the FC Flex IO module on the FN IOM.
To congure an NPG operation with the FC Flex IO module on the FN IOM, follow these general conguration steps:
1 Enabling Fibre Channel Capability on the Switch
2 Creating a DCB map
3 Applying a DCB map on server-facing Ethernet ports
4 Creating an FCoE VLAN
5 Creating an FCoE map
6 Applying an FCoE map on server-facing Ethernet ports
7 Applying an FCoE Map on fabric-facing FC ports
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FC Flex IO Modules