Brocade Fabric OS v7.2.1a Release Notes v1.0

Fabric OS v7.2.1a Release Notes v1.0 Page 27 of 55
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.
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.
Forward Error Correction (FEC)
 Though FEC capability is generally supported on Condor3 (16G capable FC) ports when operating at
either 10G or 16G speed, it is not supported with all DWDM links. Hence FEC may need to be disabled
on Condor3 ports when using DWDM links with some vendors by using portCfgFec command. Failure
to disable FEC on these DWDM links may result in link failure during port bring up. Refer to the
Brocade Fabric OS 7.x Compatibility Matrix for supported DWDM equipment and restrictions on FEC
use.
FICON
 For FICON qualified releases, please refer to the Appendix: Additional Considerations for FICON
Environments section for details and notes on deployment in FICON environments. (This appendix is
only included for releases that have completed FICON qualification).
FL_Port (Loop) Support
 FL_Port is not supported on FC16-32, FC16-48, FC8-32E, FC8-48E, Brocade 6510, Brocade 6505
and Brocade 6520.