- Written by Dongping Zhu
- Posted on March 3, 2023
- Updated on May 6, 2025
- 7849 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.