6.5.1

Table Of Contents
For the software FCoE adapter, you must properly configure networking and then activate the adapter.
Note The number of software FCoE adapters you activate corresponds to the number of physical NIC
ports. ESXi supports a maximum of four software FCoE adapters on one host.
Configuration Guidelines for Software FCoE
When setting up your network environment to work with ESXi software FCoE, follow the guidelines and
best practices that VMware offers.
Network Switch Guidelines
Follow these guidelines when you configure a network switch for software FCoE environment:
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On the ports that communicate with your ESXi host, disable the Spanning Tree Protocol (STP).
Having the STP enabled might delay the FCoE Initialization Protocol (FIP) response at the switch and
cause an all paths down (APD) condition.
The FIP is a protocol that FCoE uses to discover and initialize FCoE entities on the Ethernet.
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Turn on Priority-based Flow Control (PFC) and set it to AUTO.
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Make sure that you have a compatible firmware version on the FCoE switch.
Network Adapter Best Practices
If you plan to enable software FCoE adapters to work with network adapters, specific considerations
apply.
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Make sure that the latest microcode is installed on the FCoE network adapter.
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If the network adapter has multiple ports, when configuring networking, add each port to a separate
vSwitch. This practice helps you to avoid an APD condition when a disruptive event, such as an MTU
change, occurs.
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Do not move a network adapter port from one vSwitch to another when FCoE traffic is active. If you
need to make this change, reboot your host afterwards.
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If you changed the vSwitch for a network adapter port and caused a failure, moving the port back to
the original vSwitch resolves the problem.
Set Up Networking for Software FCoE
Before you activate the software FCoE adapters, create VMkernel network adapters for all physical FCoE
NICs installed on your host.
This procedure explains how to create a single VMkernel network adapter connected to a single FCoE
physical network adapter through a vSphere Standard switch. If your host has multiple network adapters
or multiple ports on the adapter, connect each FCoE NIC to a separate standard switch. For more
information, see the vSphere Networking documentation.
vSphere Storage
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