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

Fabric OS v6.4.3f Release Notes v1.0 Page 12 of 149
FOS Migration Considerations
This section contains important details to consider before migrating to or from this FOS release.
TSBs - Critical Issues to Consider Prior to Installing This FOS Release
Technical Support Bulletins (TSBs) are produced to provide detailed information about high priority
defects or issues present in FOS releases. The following sections specify all current TSBs that have
been identified as being a risk to or resolved with this specific version of Fabric OS. Please review
carefully and refer to the complete TSB for relevant issues prior to migrating to this version of code.
TSBs can be found at http://my.brocade.com under the “Technical Documentation” section of the
“documentation” tab.
TSB Issues Outstanding in FOS v6.4.3
Issues in the following list of TSBs are known to be potential risks to using FOS v6.4.3 and should be
considered carefully prior to using this release of code:
TSB
Summary
TSB Issues Resolved in FOS v6.4.3
Issues in the following list of TSBs are known FOS v6.4.x risks that are not exposures in FOS v6.4.3.
Note that the issues addressed in this list of TSBs may also be resolved in other FOS releases. Refer
to the specific Release Notes for each release to verify resolution details.
TSB
Summary
TSB 2010-088-A
If an 8Gb/sec capable Fibre Channel port is configured for long distance
(portcfglongdistance command) in either LD or LS distance level mode (requires the
Extended Fabrics license) with a dynamically calculated or statically configured distance
setting in excess of the values specified below, the link will experience constant
timeouts and Link Resets (LR).
TSB 2010-094-A
A firmware incompatibility between Fabric OS v6.3.x and Fabric OS v6.4.0b and v6.4.0c
has been identified for Encryption Groups made up of BES and FS8-18 switches
running under different Fabric OS code bases.
TSB 2010-095-A
Brocade 48000 directors may fail to upgrade when upgrading to Fabric OS v6.3.x or
v6.4.x when an FR4-18i blade is present and at least one GE port is persistently
disabled.
TSB 2010-096-A
Switches running with Fabric OS v6.3.1b, v6.3.1c, v6.3.2, v6.4.0, v6.4.0a, or v6.4.0b
could experience a CP failover, a faulted blade or a faulted switch condition upon
detection of a specific back-end link error.
TSB 2010-097-A
After a reboot or WAN issue that causes an FCIP circuit to bounce, performance of the
Brocade 7800 and FX8-24 may be degraded because of limited throughput on FCIP
circuits. This is due to reduced TCP window size. Enabling IPsec on these platforms
increases the probability of encountering degraded performance.
TSB 2010-098-A
One or more fans go into a faulted state on the DCX backbone even though the fans are
operating properly.
TSB 2010-099-A
Any 8G blade or 8G switch running with FOS v6.4.0, v6.4.0a, v6.4.0b, v6.4.0c and
v6.4.1 could observe a loss of connectivity on a port or trunked ISL causing all traffic
entering the switch or the blade to be dropped.