Technical Tip: ECMP load-balancing mode CLI setting will disappear when SD-WAN status enabled
Description
This article describes the issue when the 'v4-ecmp-mode source-ip-based' default CLI system setting disappears when the SD-WAN status is enabled.
Scope
FortiGate.
Solution
ECMP load balancing is enabled by default in FortiGate.
When SD-WAN is turned on, ECMP load-balancing mode will be disabled, and the 'set v4-ecmp-mode source-ip-based' default CLI command from global settings will be removed.
To turn on ECMP load-balancing mode, disable SD-WAN status.
Version 6.4 and above :
The command 'config system virtual-wan-link' is removed starting from version 6.4.x.
To disable or enable SDWAN status, apply the command below :
config system sdwan
set status disable
After applying the change, ECMP load-balancing will be turned on again.
show full-configuration | grep ecmp
set v4-ecmp-mode source-ip-based <-- ECMP enabled.
set ecmp-max-paths 255
Note: Volume-based load balancing method is supported only in SD-WAN, not with ECMP.