D-Link DFL-1500 [82/271] Objectives

Part III

NAT & Routing

D-Link 74

8.2 Objectives

1. We need to let DFL-1500 knows how to forward the packets which is bound for financial department (192.168.50.0/24).

2. The network administrator plans to solve the problem by subscribing the second link (ISP2). He hopes that all the packets

from the General-Manager-Room (192.168.40.192/26) will pass through the ISP2 link instead of the default ISP1 link.

8.3 Methods

1. Add a static routing entry to direct the packets towards 192.168.50.0/24 through the router (192.168.40.253).

2. Add a policy routing entry for the packets coming from General-Manager-Room department (192.168.40.192 /

255.255.255.192) through the ISP2 link.

Two restrictions of the default WAN Policy Route: 1) As long as the subnet is directly connected to the

DFL-900/1500, it will be routed with the routing table as the priority 1. 2) For the subnet indirectly connected to

the DFL-900/1500, it will be routed to the policy route only when it comes to the default route.

8.4 Steps

8.4.1 Add a static routing entry

Step 1. Add a static routing rule

Click the Add button to the next process.

Advanced Settings > Routing > Static Route

Step 2. Fill out the related field

Fill in the Destination and the Netmask field

with 192.168.50.0 and 255.255.255.0.

Assign the next hop Gateway as

192.168.40.253 (Router IP address). Click

Add to proceed.

Advanced Settings > Routing > Static Route > Add