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IS-IS: Deployment in IP Networks by Alvaro Retana, Russ White

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Other Design and Deployment Issues

Beyond deciding whether or not to divide an IS-IS network into multiple domains, and where the domain borders should be if you decide to separate the domain, what other issues should you look for when designing and deploying an IS-IS network? There are a few things that you should look at regardless of what routing protocol you are using, such as summarizing IP prefixes or dialer interfaces, while there are others, which are more specific to IS-IS, such as tuning the various IS-IS timers.

Summarizing IP Prefixes

One of the most important issues to address when designing or deploying an IP network is prefix summarization. Summarization is a very simple concept—the basic premise is to reduce the amount of information ...

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