This document describes how the eigrp summary route metrics is determined.
There is a need to provide information on how the summary route metrics, which is created by the ip summary-address eigrp command, is determined and details of the summary-metric command implemented in association with the command.
If there are many component routes to be summarized and the component routes are frequently updated, the metrics are also updated frequently, and thus a high CPU state may be caused depending on the configuration.
To deal with such a situation, the summary-metric command was implemented.
This command has been implemented in 12.2(33)SRE, 12.2(33)SXJ, 12.2(33)XNE/2.5.0, 15.0(1)M, 15.1(1)SG or later.
This command explicitly sets the metric for the summary regardless of the component route metric.