XiNCOM Twin WAN XC-DPG502 User Manual page 79

Twin WAN Series – User Guide | v1
Inbound Load Balancing Function for XC-DPG602 & 603 Gateways
Note: This example uses WAN 1 as the initial recipient for the request of a domain name.
1. A web browser makes a request for a domain name. This request is received by
WAN 1.
2. The domain name request is transferred and processed through the Authoritative
DNS Module.
3. The DNS Module then asks the WAN Port Monitoring Module to provide the IP
address of the requested web server.
4. The WAN Port Monitoring Module service checks the current load on WAN 1
and WAN 2.
5. The Load Balance Algorithm is applied to the request. This holds the Gateway's
user preferences and setting values including load-share and load balance type.
6. The Load Balancing Algorithm determines that WAN 2 has the least amount of
traffic sessions and therefore instructs the DNS Module to use WAN 2.
7. A reply from the Gateway is then sent back through WAN 1 to the source of the
DNS request.
8. The web browser receives the Gateway's reply and is forwarded to the domain
name's respective IP address. The web browser will now retrieve the information
that was requested.
9. The information request is then directed through WAN 2.
10. The information requested from the web browser is now accessed on the web or
FTP server located behind the Gateway.
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