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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