SDWAN rule "Maximize Bandwidth mode" for multi-link selection
I am using Ftg400E HA with FortiOS v7.0.3.
Three internet lines are configured in the Ftg400E and formed into "SDWAN for internet access"; the SDWAN rule is using "maximize bandwidth mode", so three lines are sharing the internet traffic loading.
Recently, "internet line B and line C" are found unstable, while internet A is working well; hence I intend to configure internet line A and B still running in maximize bandwidth mode (load-balance mode), while line C is configured as hot-standby line.
I tried this way, but failed ( still three lines running in round-robin mode) :
1. SDWAN rule is still using "Maximize bandwidth mode"
2. but limited 2 lines for load-balanced
3. configured line C with higher cost value
Forti400e_01 # show sys sdwan config system sdwan set status enable set load-balance-mode source-dest-ip-based config zone edit "virtual-wan-link" next edit "SASE" next edit "Access_to_Internet" next .... end config members edit 1 set interface "port2" set zone "Access_to_Internet" set gateway 220.127.116.11 next edit 2 set interface "port3" set zone "Access_to_Internet" set gateway 18.104.22.168 next edit 3 set interface "port4" set zone "Access_to_Internet" set gateway 22.214.171.124 set cost 10 next
If interface preferences only set as "link A", does it mean only "Link A" participates the SDWAN rule ( maximize balance mode ), thx ? or any more information for this item "interface preference"m thx ?
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