Brocade Fabric OS v7.1.2a Release Notes v1.0

o Look for the Tech Note on Access Gateway Device-Based Mapping in VMware ESX Server.
Brocade HBA/Adapter Compatibility
• Brocade HBA/Adapter should be using driver version 2.3.0.2 or later when attached to 16G ports on
Brocade switches.
D-Port
• FOS v7.0.0a and later support the execution of D-Port tests concurrently on up to eight ports on the
switch.
• Support of D-Port is extended to R_RDY flow control mode. The R_RDY mode is useful for active
DWDM links that do not work in VC_RDY or EXT_VC_RDY flow control modes.
• A new sub-option “-dwdm” is added to “portcfgdport --enable” CLI to configure D-Port over
active
DWDM links. The “-dwdm” option will not execute the optical loopback test while performing D-Port
tests as the
active
DWDM links do not provide necessary support to run optical loopback tests.
Edge Hold Time
• Edge Hold Time (EHT) default settings for FOS v7.x have changed from those in some FOS v6.4.x
releases. The following table shows the Default EHT value based on different FOS release levels
originally installed at the factory:
Factory Installed Version of FOS
Default EHT Value
FOS v7.X 220 ms
FOS v6.4.3x 500 ms
FOS v6.4.2x 500 ms
FOS v6.4.1x 220 ms
FOS v6.4.0x 500 ms
Any version prior to FOS v6.4.0 500 ms
Gen 5 platforms and blades are capable of setting an EHT value on an individual port basis. On 8G
platforms EHT is set on an ASIC-wide basis, meaning all ports on a common ASIC will have the same
EHT setting. Extra care should be given when configuring EHT on 8G platforms or Gen 5 platforms
with 8G blades to ensure E_Ports are configured with an appropriate Hold Time setting.
When using Virtual Fabrics and creating a new Logical Switch when running FOS v7.1.0 or later, the
default EHT setting for the new Logical Switch will be the FOS default value of 220ms. However, with
FOS v7.1.0 and later, each Logical Switch can be configured with a unique EHT setting that is
independent of other Logical Switches and the Default Switch. Any Gen 5 ports (Condor3 based)
assigned to that Logical Switch will be configured with that Logical Switch’s EHT setting. Any 8G ports
(Condor2 based) will continue to share the EHT value configured for the Default Switch.
For more information on EHT behaviors and recommendations, refer to the Brocade SAN Fabric
Resiliency Best Practices v2.0 document available on www.brocade.com
.
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