300-635 · Question #8
Which option must be created to allow one EPG to communicate with another EPG within same tenant?
The correct answer is D. a contract. In Cisco ACI, EPGs are isolated by default and require a contract to permit traffic between them - one EPG acts as the provider and the other as the consumer of that contract. Without a contract binding them, even EPGs within the same tenant cannot communicate. A (Filter) is…
Question
Options
- Aa filter
- Ba taboo
- Ca subject
- Da contract
How the community answered
(22 responses)- B5% (1)
- C5% (1)
- D91% (20)
Explanation
In Cisco ACI, EPGs are isolated by default and require a contract to permit traffic between them - one EPG acts as the provider and the other as the consumer of that contract. Without a contract binding them, even EPGs within the same tenant cannot communicate.
- A (Filter) is wrong because a filter defines the specific traffic rules (ports, protocols) but is a component inside a subject - it cannot stand alone to enable communication.
- B (Taboo) is wrong because taboo contracts do the opposite - they explicitly deny traffic that would otherwise be permitted.
- C (Subject) is wrong because a subject groups filters together and lives inside a contract - it is a dependency of the contract, not the top-level construct required.
Memory tip: Think of it like a legal agreement - a Contract is what two parties (EPGs) must sign before they can do business. Subjects are the clauses and filters are the fine print inside it.
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