Destination Dependent Exit Policies

Although destination address dependent policies are generally used when connections to multiple ISPs are involved, they are not required. Even with connections to multiple ISPs, you may be able to meet your goals with a destination-independent exit policy.

Exit Selection with Customer Routes from Your ISP

Should you inject these routes into your IGP? Not if there are too many of them. Not if all exit decisions are made in one place or on one LAN. Need flesh here. Need link to architecture section here.

Exit Selection with Full Routes from Your ISP

       Best routing choices
        Example
        Requires lots of memory and CPU.
      

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