Issues with Site-to-Site Connections

As you can see from the previous section, setting up L2L sessions on a router is a little more difficult than setting them up on a concentrator; but the configuration process is still fairly straightforward. However, there can be a handful of issues that you’ll need to deal with when setting up and using L2L sessions, including:

  • Migration to an IPsec-based design

  • Filtering of IPsec traffic

  • Address translation usage

  • Non-unicast traffic

  • Configuration simplification

  • IPsec Redundancy

  • Scalability

The following sections will cover each of these issues and explain solutions you can use to help you with your IPsec implementation.

Migration to an IPsec-Based Design

One issue you might have when implementing a large number ...

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