Brocade Fabric OS v6.4.3f Release Notes v1.0

Fabric OS v6.4.3f Release Notes v1.0 Page 29 of 149
 Users who want to utilize Access Gateway’s Device-based mapping feature in the ESX environments
are encouraged to refer to the SAN TechNote GA-TN-276-00 for best implementation practices.
Please follow these instructions to access this technote:
o Log in to http://my.brocade.com
o Go to Documentation > Tech Notes.
o Look for the Tech Note on Access Gateway Device-Based Mapping in VMware ESX Server.
Bottleneck Detection
 Due to memory constraints, when using Bottleneck Detection on the Brocade 48000, a maximum of
100 ports should be configured and enabled for monitoring at any time.
FCR
 IPFC over FCR is now disabled by default. Switches that are upgraded to FOS v6.3 will retain their
configuration settings for IPFC over FCR. The change to the default configuration only applies to new
units shipping with FOS v6.3 or units running v6.3 that are reset to a default configuration. Use
fcrbcast - - enable to explicitly enable IPFC over FCR.
 Broadcast frame forwarding is not supported in an FCR fabric with a Brocade 8000. By default,
broadcast frame forwarding is disabled on the FC router. If your edge fabric includes a Brocade 8000,
do not enable broadcast frame forwarding on the FC router because this can degrade FCR
performance when there is excessive broadcast traffic.
 With FC8 blades, the switch must be disabled to change the backbone fabric ID.
 With routing and dual backbone fabrics, the backbone fabric ID must be changed to keep the IDs
unique.
 Mi10K Directors operating with firmware prior to M-EOSn v9.9.5 may experience repeated system
faults when attached as an FCR edge switch to a Brocade 7800 EX Port. To avoid this, ensure that the
Mi10K is operating with M-EOSn v9.9.5 or later when in an edge fabric that will be attached to a
Brocade 7800 FCR Backbone.
 VEX edge to VEX edge device sharing will not be supported.
FC FastWrite
 When an FC FastWrite Initiator is moved to a port that doesn't have FC FastWrite enabled, I/O will
recover and revert to the slow path route (non FC FastWrite). This is a behavioral change from FOS
v6.2.x.
Traffic Isolation over FCR
 All switches and Fibre Channel Routers both in edge and backbone fabrics must be running FOS
v6.1.0 or later in order to support this feature.
 In order for Traffic Isolation over FCR to function properly, the associated TI zones in each fabric (both
edge fabrics and backbone fabric) need to have failover ENABLED.
 TI over FCR is only supported in edge-to-edge configurations. There is no support for TI in backbone to
edge routing configurations.
Integrated Routing
 To allow Hot Code Load on a Brocade 5100 when using Integrated Routing, the edge switch
connected to the 5100 must be running Fabric OS v6.1 or later code.
 Integrated Routing EX_Ports are only supported in the base switch on a switch with VF enabled.