D-Link DFL-260E User Manual for DFL-260E - Page 194
A Route Load Balancing Scenario, 4. Route Load Balancing
View all D-Link DFL-260E manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 194 highlights
4.4. Route Load Balancing Chapter 4. Routing Figure 4.7. A Route Load Balancing Scenario We first need to define two routes to these two ISPs in the main routing table as shown below: Route No. 1 2 Interface WAN1 WAN2 Destination all-nets all-nets Gateway GW1 GW2 Metric 100 100 We will not use the spillover algorithm in this example so the routing metric for both routes should be the same, in this case a value of 100 is selected. By using the Destination RLB algorithm we can ensure that clients communicate with a particular server using the same route and therefore the same source IP address. If NAT was being used for the client communication, the IP address seen by the server would be WAN1 or WAN2. In order to flow, any traffic requires both a route and an allowing IP rule. The following rules will allow traffic to flow to either ISP and will NAT the traffic using the external IP addresses of interfaces WAN1 and WAN2. Rule No. 1 1 Action NAT NAT Src Interface lan lan Src Network lannet lannet Dest Interace Dest Network WAN1 all-nets WAN2 all-nets Service all_services all_services The service All is used in the above IP rules but this should be further refined to a service or service group that covers all the traffic that will be allowed to flow. Example 4.8. Setting Up RLB 194