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5.5 | ![]() |
Configuring EIGRP | |
5.5.4 | ![]() |
Summarizing EIGRP Routes: no auto-summary |
EIGRP automatically summarizes routes at the classful boundary, the
boundary where the network address ends as defined by class-based
addressing. This means that even though RTC is connected only to the
subnet 2.1.1.0, it will advertise that it is connected to the entire
Class A network, 2.0.0.0. In most cases, auto summarization is a good
thing, keeping the routing tables as compact as possible.
![]() In the presence of discontiguous subnetworks, automatic
summarization must be disabled for routing to work properly. To turn
off auto-summarization, use the following command:
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