Brocade Communications Systems S3-1002483-03 manual Performing a hitless OS software upgrade

6 Upgrading images independently

4.The standby management module is reset.

5.The active management module is reset and the standby management module assumes control as the active module.

6.Active console control is lost to the previously active management module as it becomes the standby management module.

7.The active management module initiates the upgrade process on all interface modules.

8.The router 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.

Figure 49 provides a detailed diagram of the Hitless reload process.

FIGURE 49 Management module (MP) and interface module (LP) hitless upgrade process

Original		New
Active
		Active	LPs
MP
		MP
hitless-reload command	Reset Standby MP
performed at console
	MP Sync Done	Reset
	SW info
	request/acknowledge
Reset	Switchover
	MP Sync Done
		LP SW info reset
		LP module up
		LP module L2, L3, L4 done?
		LP module L2, L3, L4
		done response

Reset Reset

Performing a hitless OS software upgrade,

To perform a hitlessLayer 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-reloadcommand at the console of the active management module.

144	Brocade BigIron RX Series Hardware Installation Guide
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