User Manual

Enterasys X-Pedition User Reference Manual 317

IP Policy Configuration Examples

This section presents some examples of IP policy configurations. The following uses of IP policies

are demonstrated:

• Routing traffic to different ISPs

• Prioritizing service to customers

• Authenticating users through a firewall

• Firewall load balancing

Routing Traffic to Different ISPs

Sites that have multiple Internet service providers can create IP policies that cause different user

groups to use different ISPs. You can also create IP policies to select service providers based on

various traffic types.

In the sample configuration in Chapter 18, IP Policy-Based Forwarding Configuration Guide, the

policy router is configured to divide traffic originating within the corporate network between

different ISPs (100.1.1.1 and 200.1.1.1).

Figure 25. Using an IP Policy to Route Traffic to Two Different ISPs

HTTP traffic originating from network 10.50.0.0 for destination 207.31.0.0/16 is forwarded to

100.1.1.1. Non-HTTP traffic originating from network 10.50.0.0 for destination 207.31.0.0/16 is

forwarded to 200.1.1.1. All other traffic is forwarded to 100.1.1.1.

Group user-a

10.50.*.*

Group user-b

11.50.*.*

ISP1

100.1.1.1

ISP2

200.1.1.1

et.1.1

et.1.2

Policy

Router