Dell PowerConnect B-RX Multi-Service IronWare Software R02.7.02a Release Notes - Page 32

 Active console control is lost to the previously active management module as it becomes the standby management module.  The active management module initiates the upgrade process on all interface modules.  The switch is now operating on the new Multi-Service IronWare software. The management module that was initially configured as the standby management module is now the active management module and the management module that was initially configured as the active management module is now the standby. Management module (MP) and Interface Module (LP) Hitless Upgrade Process provides a detailed diagram of the Hitless reload process. Figure 1 Management module (MP) and Interface Module (LP) Hitless Upgrade Process Performing a Hitless Layer 2 OS software upgrade To perform a hitless Layer 2 OS software upgrade, you must perform the following tasks:  Copy version 02.3.00 or later of the Multi-Service IronWare software to the primary and secondary image on both the active and standby management modules and interface modules.  Setup a console connection to both the active and standby management modules. These connections can be through a telnet, SSH, or serial console session.  Type the hitless-reload command at the console of the active management module. Loading the Multi-Service IronWare software onto the switch IronWare Software Release 02.7.02a for Brocade BigIron RX Series Swtches Release Notes v 1.0 Page 32 of 46