Users Guide

through both the pinned port and other ports in the port-channel, based on LAG hashing. Dell EMC recommends to use pinned
port if there are more than one port in FCoE LAG. In a VLT network, the server has two unique FCoE sessions to SAN fabric and
the traffic flows based on pinned port configuration. If there is only one port in the port-channel, there is no need for a pinned
port.
NOTE: The pinned port configuration is supported on FSB, Ethernet downlink port-channel of NPG, and F_Port mode.
Limitations:
● The system uses an ACL table for ENode MAC with a redirect port option similar to FCF. This limits the number of FC or
FCoE sessions.
● When the pinned port goes down, you must manually re-configure another active port in the port-channel as pinned port.
You can perform this re-configuration only in the intermediate switches, but not in the server.
● If there is a mismatch in the configuration or if the pinned port goes down, the system does not use other ports in
port-channel even if there is a valid path to server and storage device.
● When you add or remove a pinned port when FCoE sessions are active, the system clears and re-initiates the FCoE sessions
based on the configuration. The system displays warning messages during the configuration.
The following illustrations show VLT and non-VLT networks with FCoE traffic flowing through pinned port.
332 Fibre Channel