- Written by Rahul Vasist
- Posted on June 11, 2019
- Updated on June 20, 2019
- 10378 Views
ASU, or Accelerated Software Upgrade, is a feature to minimize traffic loss when upgrading from one ASU supported EOS
- Written by Rahul Vasist
- Posted on November 6, 2019
- Updated on November 13, 2019
- 10297 Views
ASU (or Accelerated Software Upgrade) is a feature that will minimize traffic loss when upgrading from one ASU
- Written by Peter Lam
- Posted on September 30, 2015
- Updated on January 2, 2025
- 16077 Views
Leaf Smart System Upgrade (SSU) provides the ability to upgrade the EOS image with minimal traffic disruption.Note: It is possible that SSU shutdown and bootup are not supported in the same image. If a product has shutdown support in image A and bootup support in a later image B, then SSU upgrade cannot be performed from image A to any images earlier than image B, including image A itself. However, upgrading from image A to image B onwards is allowed.
- Written by Karan Jagjit Kumar
- Posted on June 29, 2023
- Updated on March 12, 2025
- 8954 Views
Smart System Upgrade (SSU) provides the ability to upgrade the EOS image with minimal traffic disruption. This is an existing feature on many fixed system products. This resource will outline the SSU feature in reference to CCS-720DP, CCS-722XPM, CCS-720XP-96ZC2, CCS-720XP-48TXH-2C, and DCS-7010TX.
- Written by Joshua Portelance
- Posted on August 31, 2023
- Updated on October 13, 2023
- 6883 Views
Smart System Upgrade (SSU) provides the ability to upgrade the EOS image with minimal traffic disruption. This is an existing feature on many fixed system products. This resource will outline the SSU feature in reference to CCS-750XP, which is the first modular product to support SSU.
- Written by Fei Rao
- Posted on December 20, 2024
- Updated on December 20, 2024
- 1970 Views
There are two types of reload on a switch running EOS, normal reload and Smart System Upgrade (SSU). Scheduled normal reload is supported via ‘reload in’ command, to perform a normal reload after a specified delay. It asks for saving unsaved configuration changes and confirmation in order to schedule the reload. Scheduled SSU is supported via ‘reload fast-boot in’ command. However, after scheduling an SSU reload, if there are unsaved configuration changes, or saved configuration changes which block an SSU reload, the scheduled reload will be aborted at scheduled time.
- Written by Dongping Zhu
- Posted on March 3, 2023
- Updated on May 6, 2025
- 8443 Views
Leaf Smart System Upgrade (SSU) provides the ability to upgrade the EOS image with minimal traffic disruption. To perform the SSU, Spanning Tree Protocol (STP) should either be configured as MSTP or Rapid-PVST mode or should be disabled. Meanwhile, all ports should be configured with admin edge ports (i.e., all ports are supposed to connect to host only) and the BPDU guard should be enabled for all edge ports.