JN0-649 Exam QuestionsBrowse all questions from this exam

JN0-649 Exam - Question 20


You must ensure that all routes in the 10.0.0/8 address range are not advertised outside of your AS.

Which well-known BGP community should be assigned to these addresses to accomplish this task?

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Correct Answer: A

The well-known BGP community 'no-export' should be assigned to ensure that routes in the 10.0.0/8 address range are not advertised outside of your AS. This community prevents routes from being advertised beyond the BGP confederation boundary or the AS they originate from.

Discussion

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mohdemaOption: A
Dec 6, 2022

For specifying the BGP community attribute only, you also can specify community-ids as one of the following well-known community names defined in RFC 1997: no-advertise—Routes containing this community name are not advertised to other BGP peers. no-export—Routes containing this community name are not advertised outside a BGP confederation boundary. no-export-subconfed—Routes containing this community are advertised to IBGP peers with the same AS number, but not to members of other confederations. llgr-stale—Adds a community to a long-lived stale route when it is readvertised. no-llgr—Marks routes which a BGP speaker does not want to be retained by LLGR. The Notification message feature does not have any associated configuration parameters. https://www.juniper.net/documentation/us/en/software/junos/bgp/topics/ref/statement/community-edit-routing-options.html

harrypogiOption: A
Sep 30, 2023

a no export