300-620 DCACI: Implementing Cisco Application Centric Infrastructure

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QuestionQ52

External Network Connectivity

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Refer to the exhibit. An engineer configured subnets on the external EPG named L3OUT_CORE. External endpoints in the 10.1.0.0/24 subnet can reach internal endpoints, but external endpoints in the 172.16.1.0/24 subnet are unreachable. Which set of actions enables connectivity?

Explanation

An external EPG subnet of 0.0.0.0/1 matches the lower half of the IPv4 address space, including 10.1.0.0/24. The complementary prefix, 128.0.0.0/1, matches the upper half, including 172.16.1.0/24. Cisco ACI supports the pair 0.0.0.0/1 and 128.0.0.0/1 as External Subnets for the External EPG to match all IPv4 traffic.

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