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question about XG 310 load balancing

We have 3 lines

Line A:
- has a fixed public Ip
- is needed for authentication with MS services (Exchange365 and others). Certain requests to MS have to be initiated over this fixed Ip
- is part of a VPN
- has the lowest bandwidth

Line B and C
- have no fixed public IP's
- have the highest bandwidth
- Part of line B (10 Mbit/s) is needed for SIP. The rest (40 Mbit/s) should be used for http/https traffic.

Goal:

- VPN and authorization connection to MS via line A
- otherwise traffic should be distributed equally over line B and C.

Currently all -3- lines in the WAN link manager have "Weight = 1" .

Under "SD-WAN policy routing" it is defined that certain requests to MS should be sent via line A.
The last rule in "SD-WAN policy routing" states that all http/https traffic should be sent over line B with backup line C.

We have the impression that the http/https traffic is now routed via line B and that line C is not used.
When there is a lot of traffic, we observe that line B is fully used, while there still seems to be a lot of free bandwidth on line C.

regards

ed



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