Policy And Static Routes; Policy And Static Routes Overview; What You Can Do In This Chapter; What You Need To Know - ZyXEL Communications UAG4100 User Manual

12.1 Policy and Static Routes Overview

Use policy routes and static routes to override the UAG's default routing behavior in order to send
packets through the appropriate interface.
For example, the next figure shows a computer (A) connected to the UAG's LAN interface. The UAG
routes most traffic from A to the Internet through the UAG's default gateway (R1). You create one
policy route to connect to services offered by your ISP behind router R2. You create another policy
route to communicate with a separate network behind another router (R3) connected to the LAN.
Figure 97 Example of Policy Routing Topology
A
R3

12.1.1 What You Can Do in this Chapter

• Use the Policy Route screens (see
• Use the Static Route screens (see

12.1.2 What You Need to Know

Policy Routing
Traditionally, routing is based on the destination address only and the UAG takes the shortest path
to forward a packet. IP Policy Routing (IPPR) provides a mechanism to override the default routing
behavior and alter the packet forwarding based on the policy defined by the network administrator.
C
HAPTER

Policy and Static Routes

LAN
WAN
Section 12.2 on page
Section 12.3 on page
UAG4100 User's Guide
160
R1
R2
162) to list and configure policy routes.
167) to list and configure static routes.
1 2