Dell Brocade 5100 Brocade Fabric OS v7.3.0a Release Notes v2.0 - Page 45

 The FCoE login group name should be unique in a fabric-wide FCoE login management configuration. If there is a login group name conflict, the merge logic would rename the login group by including the last three bytes of the switch WWN in the login group name. As long as the OUI of the switch WWNs are identical this merge logic guarantees uniqueness in any modified login group name (switches with the same OUI will have unique last 3 bytes in WWN). However, if the participating switches have different OUIs but identical last three bytes in the switch WWNs, then the merge logic will fail to guarantee uniqueness of login group names. This will result in one of the login groups being dropped from the configuration. This means, no device can login to the login group that is dropped as a result of this name conflict. Users must create a new login group with a non-conflicting name to allow device logins.  Ethernet switch services must be explicitly enabled using the command "fosconfig -enable ethsw" before powering on an FCOE10-24 blade. Failure to do so will cause the blade to be faulted (fault 9). Users can enable ethsw after upgrading firmware without FC traffic interruption.  Upgrading firmware on a DCX or DCX-4S with one or more FCOE10-24 blades from FOS v6.4.1_fcoe1 to FOS v7.0 or later will be non-disruptive to FCoE traffic through FCOE10-24 blades and FC traffic.  Upgrading firmware on a DCX or DCX-4S with one or more FCOE10-24 blades from FOS v6.3.x, v6.4.x, and v6.4.1_fcoe to FOS v7.0 or later will be disruptive to any traffic through the FCOE10-24 blades.  When rebooting a DCX or DCX-4S with an FCOE10-24 blade, Qlogic CNA and LSAN zoning, the switch will become very unresponsive for a period of time. This is due to the CNA sending excessive MS queries to the switch.  The FCOE10-24 can handle 169 small FCoE frames in bursts. If you are using the FCOE10-24, and you delete a large number of v-ports with HCM, some of the v-ports may not appear to be deleted. To correct this, disable and re-enable FCoE with the following CLI commands: switch:admin>fcoe -disable slot/port switch:admin>fcoe --enable slot/port  When a FCOE10-24 blade is powered off during configuration replay, the interface specific configuration won't get applied. Later when FCOE10-24 blade is powered on, all physical interfaces will come up with default configurations. User can execute "copy startup-config running-config" command to apply the new configuration after powering on the FCOE10-24 blade.  When IGMP Snooping is disabled on a VLAN, all configured IGMP groups are removed from that VLAN. User has to reconfigure the IGMP groups after enabling the IGMP snooping on that VLAN.  FOS v7.3 adds the support of FCOE10-24 blade in DCX 8510-8 chassis with following limitations: o Only one FCOE10-24 blade is supported at the fixed slot 1 position. Inserting the blade into other slot positions, however, will not fault the blade. o An FCOE10-24 blade can co-exist with FC16-32 and FC8-32E blades only in a DCX 8510-8 chassis. o Only supports FCoE direct attach. o Layer2 Ethernet traffic is not supported. o If an FCoE10-24 blade is inserted into a DCX 8510-8 chassis, it is required to reboot the chassis or slot poweroff/poweron core blades. A chassis reboot or slot poweroff/poweron core blades must also be performed if the FCoE10-24 blade is removed and replaced with another blade type. FCR and Integrated Routing  With routing and dual backbone fabrics, the backbone fabric ID must be changed to keep the IDs unique.  VEX edge to VEX edge device sharing will not be supported. Fabric OS v7.3.0a Release Notes v2.0 Page 45 of 55