ITC/3AV WIKI

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====== VSU UPGRADE ======


**Note：**//Applicable for all chassis/box switches// 

**Scenario:**// One VSU group is consist of two S8600 VSU group, each of the chassis is loaded with dual control engine.//

===== 1. Network Topology =====

{{:ruijie:switch:firmware_upgrade:ruijie_vsuupgrade_1.png?400|}}

{{:ruijie:switch:firmware_upgrade:ruijie_vsuupgrade_2.png?400|}}


===== 2. Configuration Tips =====


==== 2.1. Read release notes before the upgrade, especially the "supported hardware list" ====

==== 2.2. VSU upgrade will cause network service down, plz researve at least TWO hours for the upgrade process. ====

===== 3. Configuration Steps =====


==== 3.1. Backup config file to local PC ====

==== 3.2. Confirm hardware version before upgrade ====

==== 3.3. Confirm with customer if service download is allowed; ====

==== 3.4. Change chassis from VSU to standalone mode ====

//Ruijie-ACTIVE#switch convert mode standalone//

==== 3.5. Follow chapter "firmware upgrade>User mode upgrade" ====

==== 3.6. Show version on both chassis ====

==== 3.7. Convert chassis back to VSU mode ====

//Ruijie#switch convert mode virtual//      

//Convert switch mode will automatically backup the "config.text" file and then delete it, and reload the switch. Do you want to convert switch to virtual mode? [no/yes]y//

//Do you want to recover "config.text" from "virtual_switch.text" (press 'ctrl + c' to cancel) [yes/no]:y//

==== 3.8. (show switch virtual), check network production ====