Click the Exhibit button.
You have MAC addresses moving in your EVPN environment.
Referring to the exhibit, which two statements are correct about the sequence number? (Choose two.)
Exam JN0-664 All QuestionsBrowse all questions from this exam
Question 37
Correct Answer: B, D
In an EVPN environment, the sequence number serves two main functions. Firstly, it helps resolve conflicting MAC address ownership claims, ensuring that the MAC address binding is accurate across the network (B). Additionally, the sequence number aids the local PE (Provider Edge) device in identifying the latest advertisement by incrementing with each mobility event, which ensures that the most recent information is used (D). The other options are less relevant in this context because the sequence number does not specifically identify MAC addresses to be discarded (A) or directly indicate the message type used to advertise it (C).
Discussion
ARSE_TOPOptions: CD
Correct Answer: C & D EVPN uses a Type 2 route, tagged with a MAC mobility BGP community.
696501dOptions: CD
refer rfc7432 and section 15
Guru29Options: CD
C&D Correct
Guru29Options: BD
To determine the correct MAC address location, PE devices use the MAC mobility extended community field, as defined in RFC 7432, in the MAC advertisement route message. The MAC mobility extended community includes a static flag and a sequence number. The static flag identifies pinned MAC addresses that should not be relocated. The sequence number identifies newer MAC advertisement messages. Starting at 0, the sequence number is incremented for every MAC address mobility event. PE devices running Junos OS apply the following precedence order in determining the MAC advertisement route to use: Type 2 is Kind of ARP(MAC to IP resolution) Correct answer . A,D