Billion BiPAC 8900X R3 User Manual page 220

III Multiple WAN interfaces VDSL2 50/50 & WAN eth 1000 & LTE 100/50Mbps
Please select Method: WRR. It's because speed between VDSL, Eth and LTE are 1:20:2. Hence,
we need to use WRR to 10:200:20.
VDSL: 90% of speed on upstream/downstream
Ethernet WAN: 90% of speed on upstream/downstream
LTE: 90% of speed on upstream/downstream
Note: If there is a huge disparity between interfaces, please use WRR. If not, please use SDB. It
depends on your test environment.
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