Example 2

The auto routing policies to be established accordingly:

1. Always route connections through WAN#1 (fixed algorithm). 2. Always route connections through WAN#2 (fixed algorithm).
2. Always route connections through WAN#3 (fixed algorithm).
3. Route connections evenly among the three WAN links with “Round-Robin”.
4. Route connections through the three WAN links by “Round-Robin” with weight ratio WAN#1:WAN#2:WAN#3 = 1:2:3. Note: if there are six connections to be established, the first connection will be routed through WAN#1, the second and third through WAN#2, and the last three through WAN#3.
5. Route connections through WAN#1 and WAN#2 depending on the bandwidth left in the downstream traffic of each WAN link.
6. Route connections through WAN#2 and WAN#3 depending on the bandwidth left in the total traffic of each WAN link.

Defining filters for the following:

1. The connections from 192.168.0.100 to FTP 210.10.10.11 are routed by the policy “WAN3”. If WAN #3 fails, they will be routed by policy “by Downstream”.
2. The connections from sub-network 192.168.10.0/24 to web servers on the internet are routed by the policy “Round-Robin1:1:1”.
3. The connections from 192.168.0.100~192.168.0.200 to sub-network 192.192.0.0/24 on TCP port 8000 are routed by the policy “WAN2”. If WAN #2 fails, they will be routed by the policy “WAN3”.
4. The connections from the LAN to the Internet are routed by the policy “by Downstream”. If both WAN #1 and WAN #2 fail, they will be routed by “WAN3”.
5. The connections from 211.21.48.196 to FTP 210.10.10.11 are routed by policy “Round-Robin1:2:3”.
6. The connections from 211.21.48.195 to any SMTP server on the internet are routed by policy “WAN3”. If WAN #3 fails, they will be routed by “WAN3”. Note: In this case, the host at 211.21.48.195 will not be able to establish connections to any SMTP server on the internet when WAN #3 fails, even though some other WAN links still keep alive. For more details, refer to “Fail-over” policy.
7. The connections from DMZ to the internet are routed by policy “By Downstream”. If both WAN #1 and WAN #2 fail, it will be routed by “By Total”. Note: Usually, when both WAN #1 and WAN #2 fail, fail-over policy will take effect. Somehow in the case above when both WAN links fail, then all traffic will be routed to WAN #3.
8. The connections from an arbitrary host to the hosts at 60.200.10.1~60.200.10.10 will be routed by policy “WAN2”. If WAN #2 fails, they will be routed by “WAN1”.
9. The connections from an arbitrary host to any host on the Internet will be routed by the policy “by Downstream”.

See also

• WAN Link Health Detection l Configuring your WAN

• Load Balancing & Fault Tolerance l Busyhour Settings l Using the web UI