A network student has to prepare a paper about EIGRP network summarization, but the student does not know much about summarization metrics. What piece of information is accurate about EIGRP summarization?

A network student has to prepare a paper about EIGRP network summarization, but the student does not know much about summarization metrics. What piece of information is accurate about EIGRP summarization?

• The summarizing router uses the highest metric of the component routes in the summary aggregate prefix.
• The path metric for the summary aggregate is based on an average of the path attributes of the component routers.
• Every time a matching component route for the summary aggregate is added or removed, downstream routes must run the DUAL again.
• EIGRP path attributes are inserted into the summary route so that downstream routers can calculate the correct path metric for the summarized prefix.

Explanation: The summarizing router uses the lowest metric of the component routes in the summary aggregate prefix. The path metric for the summary aggregate is based on the path attributes of the path with the lowest metric. EIGRP path attributes such as total delay and minimum bandwidth are inserted into the summary route so that downstream routers can calculate the correct path metric for the summarized prefix.

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