AOS Release 6.4.6.R01 Release Notes November 2013
Upgrading to AOS 6.4.6.R01
Upgrading OmnSwitch to 6.4.6.R01 consists of the following steps. The steps must be performed in order.
Observe the following prerequisites before performing the steps as described below:
• In most cases upgrading the FPGA/CPLD is not required when upgrading to AOS Release
6.4.6.R01. If an FPGA/CPLD upgrade is required, two reboots of the switch or stack being
upgraded will be required. The first reboot will happen automatically after upgrading the
FPGA/CPLD. A second reboot is required after upgrading the Uboot/Miniboot and AOS.
• If a unit has been received from the factory with a newer FPGA/CPLD version it is not required to
upgrade the existing units to the newer version. Having a mix of FPGA/CPLD in the same stack or
chassis is supported.
• An OmniSwitch 6850E-U24X with CPLD version 8 will require a hard reboot (the switch must be
physically powered down and back up) for any CPLD upgrade to take affect.
NOTE: That an OmniSwitch 6850E-U24X with CPLD version 7 or version 8 does not require a
CPLD upgrade when upgrading to 6.4.6.R01.
• CPLD must be upgraded to version 17 for OmniSwitch 6850E with OS-BPS models.
• For OS6850E-C24/P24/C48/P48 models without OS-BPS models, CPLD upgrade to version 17 is
not mandatory.
• Refer to the Version Requirements table to determine the proper code versions.
• Download the appropriate AOS images, Uboot/Miniboot, and FPGA files from the Service &
Support website.
Summary of Upgrade Steps
1. Upgrade the FPGA/CPLD, if required. (switch/stack automatically reboots)
2. Upgrade the Uboot/Miniboot (If required) and AOS images (Reboot required)
3. Verify the upgrade and remove the upgrade uboot/miniboot and CPLD files from the switch.
OmniSwitch 6850E/6855/9000E------ Release 6.4.6.R01 Page 45 of 80
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