In BGP, Notification messages are used to request peers to resend routing information after routing policies are changed.
Answer(s): B
Notification Message PurposeBGP Notification messages are used to report errors or terminate a connection. They do not request peers to resend routing information after routing policies are changed.Routing updates following policy changes require manual resynchronization, not Notification messages.HCIP-Datacom-Core ReferenceThe purpose and usage of Notification messages are discussed in the BGP operation chapters.
When a BGP device sends an Open message to establish a peer connection, which of the following information is carried?
Answer(s): A,B,D
BGP Open Message ComponentsThe Open message contains the following critical parameters:Local AS Number: The autonomous system of the router.Router ID: A unique identifier for the router.Hold Time: The maximum time the router will wait for Keepalive or other messages from its peer.Incorrect OptionC . NLRI: Network Layer Reachability Information is not included in Open messages; it is carried in Update messages.HCIP-Datacom-Core ReferenceThe structure and contents of Open messages are explained in BGP protocol details.
During BGP route summarization configuration, which keyword can be used to suppress all specific routes so that only the summary route is advertised?
Answer(s): D
In BGP route summarization, the suppress-spec-map keyword is used to suppress all specific routes so that only the summary route is advertised. This helps reduce routing table size and improve efficiency. The summary route carries the Atomic-aggregate attribute rather than the community attributes of specific routes, ensuring that unnecessary details are hidden from other parts of the network while still maintaining connectivity.
HCIP-Datacom-Core Technology Training Material (BGP Route Summarization).Suppressing Specific Routes:When summarizing routes, the suppress-spec-map keyword is used to suppress specific prefixes so that only the summarized route is advertised.The suppressed routes are not advertised to BGP peers; instead, only the summary route is propagated.HCIP-Datacom Advanced Routing & Switching Technology (BGP Attributes and Summarization Techniques).Atomic-Aggregate Attribute:The summary route generated during BGP route summarization carries the Atomic-aggregate attribute. This attribute indicates that the summary route might not provide the exact path information available in the original specific routes.Additionally, when using the suppress-spec-map option, the specific routes' attributes, such as community attributes, are not included in the summary route.HCIP-Datacom-Core Technology Training Material (BGP Path Attributes).Conclusion:The suppress-spec-map keyword is used to suppress specific routes when performing BGP summarization. The summarized route includes the Atomic-aggregate attribute but does not carry community attributes from the suppressed routes.
BGP is generally applied to complex networks where routes change frequently. Frequent route flapping consumes a large number of bandwidth and CPU resources, and even affects the normal operation of the network. This is an unavoidable problem that cannot be solved in BGP.
BGP Route Flapping and MitigationWhile route flapping is a concern in large-scale networks, BGP employs mechanisms such as Route Dampening to mitigate its impact. Route dampening suppresses frequently flapping routes for a period of time to reduce resource consumption and network instability.Therefore, it is incorrect to state that the issue cannot be resolved in BGP.HCIP-Datacom-Core ReferenceThe mechanism of route dampening is detailed in the BGP optimization chapters.
The Next_Hop attribute in BGP records the next hop of a route. Similar to the next hop in an IGP, the Next_Hop attribute in BGP must be the IP address of a peer interface.
BGP Next_Hop AttributeUnlike IGP, the Next_Hop attribute in BGP does not necessarily have to be the IP address of a peer interface. For example, in multi-hop BGP configurations, the Next_Hop can point to a different router or interface within the network.HCIP-Datacom-Core ReferenceDetails of the Next_Hop attribute and its behavior are outlined in BGP path selection principles.
Share your comments for Huawei H12-821 exam with other users:
good questions
can we please have the latest exam questions?
please help with jn0-649 latest dumps
please i need this dump. thanks
i have to take the aws certified developer - associate dva-c02 in the next few weeks and i wanted to know if the questions on your website are the same as the official exam.
all questions are more important
ques 4 answer should be c ie automatically recover from failure
very very useful page
the exams are giving me an eye opener
3rd so far, need to cover more
aligns with the pecd notes
question 4: b securityadmin is the correct answer. https://docs.snowflake.com/en/user-guide/security-access-control-overview#access-control-framework
kindly please share dumps
it is very useful, thank you
need safe rte dumps
can you upload the cis - cpg dumps
q6 = 1. download odt application 2. create a configuration file (xml) 3. setup.exe /download to download the installation files 4. setup.exe /configure to deploy the application
great material
could you please upload sap c_arsor_2302 questions? it will be very much helpful.
vraag 20c: rsa veilig voor symmtrische cryptografie? antwoord c is toch fout. rsa is voor asymmetrische cryptogafie??
so far good
question 31 has obviously wrong answers. tls and ssl are used to encrypt data at transit, not at rest.
pls provide dump for 1z0-1080-23 planning exams
could you please upload the exam?
please upload this
good material
lets see if this is good stuff...
useful information
intéressant
thank you for making the interactive questions
questions are accurate
i need questions/dumps for this exam.
i need this exam, when will it be uploaded
i need the dumps !