350-401 · Question #247
What is the purpose of EIGRP summary leaking?
The correct answer is B. to allow a component of a summary to be advertised in addition to the summary. EIGRP summary leaking allows specific component routes within a summarized range to be advertised individually, in addition to the summary route itself.
Question
What is the purpose of EIGRP summary leaking?
Options
- Ato allow a summary to be advertised conditionally on specific criteria
- Bto allow a component of a summary to be advertised in addition to the summary
- Cto allow overlapping summaries to exist on a single interface
- Dto modify the metric of the summary based on which components of the summary are operational
How the community answered
(41 responses)- A2% (1)
- B90% (37)
- C5% (2)
- D2% (1)
Why each option
EIGRP summary leaking allows specific component routes within a summarized range to be advertised individually, in addition to the summary route itself.
Conditional advertising is related to other routing features, not the primary purpose of summary leaking, which is to expose specific components.
EIGRP summary leaking enables the advertisement of more specific routes (components) that are part of a configured summary route, effectively allowing certain subnets within the summary to be 'leaked' to other routers. This is used when some routers need to know the more specific path to a subnet that would otherwise be hidden by the summary.
Overlapping summaries on a single interface is generally a configuration issue, not a feature of summary leaking.
Modifying the metric based on operational components is related to route health, not the core function of summary leaking, which is about route advertisement.
Concept tested: EIGRP summary leaking purpose
Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_eigrp/configuration/15-s/ire-15-s-book/ire-sum-leaking.html
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