Dell PowerConnect B-RX4 Installation Guide - Page 197

Upgrading the BigIron RX Series software 7 Upgrading the MBRIDGE FPGA image Follow the steps given below to upgrade one or more MBRIDGE FPGA images on a BigIron RX Series management module. 1. Place the new MBRIDGE FPGA image on a TFTP server to which the BigIron RX Series system has access or on a PCMCIA flash card inserted in slot 1 or 2. 2. Copy the MBRIDGE FPGA image from the TFTP server or a flash card in slot 1 or 2 to all management modules or a management module in a specified chassis slot. To perform this step, enter one of the following commands at the Privileged EXEC level of the CLI (example: BigIron RX#): • copy tftp mbridge MBRIDGE • copy slot1 | slot2 mbridge MBRIDGE 3. After the MBRIDGE upgrade is complete, the management module must be power-cycled. 4. Verify that the MBRIDGE images have been successfully copied to the specified interface modules by entering the following command at any level of the CLI: • show version Check for the MBRIDGE image version numbers in the output. Hitless Layer 2 OS upgrade Version 02.3.00a and later of the Multi-Service IronWare software support hitless upgrade of the operating system on a BigIron RX switch. The hitless OS upgrade is designed to allow for upgrading the software in a system between two patch releases of the OS, which support this functionality and have compatible data structures. A hitless Layer 2 OS downgrade may also be supported if the current and target code releases have compatible data structures. NOTE Hitess OS upgrade is not supported between major releases. It is supported only within a release. For example Hitless OS Upgrade is available when upgrading from software release 02.7.00a to 02.7.00b. It is not available when upgrading from software release 02.6.00 to 02.7.00. From time to time, it may become necessary when enhancing the software or adding new features to change or add data structures making releases incompatible. In these cases, an upgrade or downgrade will not be hitless, and will fall back to using the regular Brocade upgrade process - relying on fast reboot. The following guidance must be followed when performing a hitless OS upgrade or downgrade: • Hitless upgrade or downgrade is not supported in 2.3.00. • Hitless Layer 2 OS upgrade is supported between 2.3.00a and higher releases (unless indicated otherwise in the target software's release notes). • Hitless upgrade maintains forwarding states and control plane functionality of the active software from which you are upgrading (i.e. 2.3.00a to 2.4.00 would only maintain the functionality supported by 2.3.00a). • Hitless downgrades are recommended only between compatible patch releases of a feature release such as between 2.3.00b to 2.3.00a (to ensure the higher release has no functional enhancements that do not exist in the lower release). BigIron RX Installation Guide 185 53-1001811-01