‐ If you install a FastIron 08.0.20 or later image on a new system with no previous
configuration, hitless-failover is enabled by default.
‐ If you upgrade to FastIron 08.0.20 or later from a previous version that has hitless-
failover enable configured, hitless-failover is retained as the default.
‐ If you upgrade to FastIron 08.0.20 or later on a system with an earlier release that does
not have hitless-failover enabled in its configuration, the previous configuration is retained.
• The FastIron 07.2.00a or later image uses different Interprocessor Communications (IPC) versions
for FCX devices; however, units in a stack must run the same IPC version to communicate. After
upgrading from FastIron 07.2.00 or earlier to FastIron 08.0.xx, you must verify that the same image
is downloaded to every unit in the stack before reloading the entire stack. To verify the images,
enter the show flash command at any level of the CLI. A stack cannot be built and will not operate
if one or more units have different software images.
• To upgrade an ICX 6430 or ICX 6450 stack running software version 07.4.00 to version 08.0.10 or
later, first upgrade the desired primary or secondary flash image to the new code version and
reboot the stack onto the new code version before upgrading the bootrom image. Failure to reboot
onto the new code version before upgrading the bootrom image could result in mismatched bootrom
images for the stack member units, which will prevent the stack from successfully forming after the
upgrade.
• All devices in a mixed stack must run the same version of the software. A stack cannot form if the
software images are of different major versions. A stack member is not operational if it runs a
different minor version than other stack members; however, the active controller can download an
image and reset a non-operational unit that has a minor version number different from the active
controller.
• To upgrade to a mixed stack, the peripheral ports must be configured manually.
• The Layer 3 configuration on your device becomes part of the default VRF after upgrade. If no
configurations are done, all interfaces are part of the default VRF.
Downgrade considerations
• ICX 6610 devices in a mixed stack form a homogenous stack when the software is downgraded
from FastIron 08.0.xx. Other devices in the mixed stack are left out. You should manually configure
the remaining mixed stack members after downgrade from FastIron 08.0.xx.
• On downgrade from 08.0.xx to 07.x.xx, core ICX 6610 devices lose the ICX 6450 configuration, and
they lose peri-port and peri-trunk configurations.
• For FCX units, the 10G module name in FastIron 08.0.xx software releases differs from the 10G
module name in FastIron 07.0.01b and 07.0.01c. Consequently, if an FCX device is downgraded
from FastIron 08.0.xx to FastIron 07.0.01b or 07.0.01c, the stacking port configuration is lost, and
the unit is not able to join the stack.
• If FCX units in an traditional stack are downgraded from FastIron 08.0.xx to earlier releases, in
some instances, the units may not be able to form a stack. This occurs if there is a mismatch of
BGP capability within the stack (that is, some units support it and others do not). If you encounter
this problem, contact Brocade Technical Support for assistance.
Upgrade considerations for devices with flexible authentication
The following behavior associated with flexible authentication should be taken into consideration when
you upgrade to FastIron 08.0.20 or later.
• Dot1x authentication and MAC authentication configured on default VLAN
After you upgrade to FastIron 08.0.20 or later, global configuration for both dot1x authentication and
MAC authentication move under the authentication command, and the first unused VLAN becomes
Upgrade considerations for devices with flexible authentication
16 FastIron Ethernet Switch Software Upgrade Guide
53-1003632-02
To Next Page
Loading...
Need help?
General
