Release Notes

Fabric OS v7.0.2 Release Notes v1.0 Page 14 of 99
FOS Upgrade and Downgrade Special Considerations
The DCX/DCX-4S units running any FOS v6.4.x can be non-disruptively upgraded to FOS v7.0.2. This upgrade is
non-disruptive to FC traffic only. When loading FOS v7.0.2 to a DCX chassis with FCOE10-24 blades with
Brocade Network Advisor v11.1.1/11.1.1a, there is no warning flagging FCoE traffic disruption.
The DCX/DCX-4S units running FOS v6.4.1_fcoe1 can be non-disruptively upgraded to FOS v7.0.2. This
upgrade is non-disruptive to both FCoE traffic through FCOE10-24 blades and FC traffic.
Non-disruptive upgrade to FOS v7.0.2 on 8G switches is allowed from FOS
FOSFOS
FOSv6.4.1
v6.4.1v6.4.1
v6.4.1a
aa
a or later.
Disruptive
DisruptiveDisruptive
Disruptive upgrades to Fabric OS 7.0.2 are allowed and supported from FOS 6.3 (up to a two-level migration)
using the optional “-s” parameter with the firmwaredownload command.
If there are multiple node EGs (encryption groups) in a fabric, please complete firmwaredownload on one node
at a time before downloading on another node.
The Brocade 8000 does not support non-disruptive hot code loads (HCL). Upgrading the Brocade 8000 to FOS
v7.0 .1 will be disruptive to the I/O through the switch.
FC FastWrite , EX_Ports, and TCP byte streaming on FR4-18i must be disabled prior to upgrading to FOS v7.0.2.
Failure to do so will cause the upgrade to be blocked.
Upgrading a switch currently operating in interopmode 2 or 3 to FOS v7.0.2 is disruptive. The interopmode
must be changed to 0 prior to upgrading to FOS v7.0.2, as interopmodes 2 and 3 are not supported on FOS
v7.0.2. Changing the interopmode is an offline operation.