24-bits, with one being OUI (Organizationally Unique Identifier) and the other being NIC specific.The 16-bit 0xFFFE is then inserted between these two 24-bits to for the 64-bit EUI address.IEEEhas chosen FFFE as a reserved value which can only appear in EUI-64 generated from theEUI-48 MAC address.Here is an example showing how the Mac Address is used to generate EUI.Cisco 300-101 Exam"Pass Any Exam. Any Time." - 26Next, the seventh bit from the left, or the universal/local (U/L) bit, needs to be inverted. This bitidentifies whether this interface identifier is universally or locally administered. If 0, the address islocally administered and if 1, the address is globally unique. It is worth noticing that in the OUIportion, the globally unique addresses assigned by the IEEE have always been set to 0 whereas
- Download A+ VCE (latest) free Open VCE Exams - VCE to PDF Converter - VCE Exam Simulator - VCE Online - IT Certifications the locally created addresses have 1 configured. Therefore, when the bit is inverted, it maintainsits original scope (global unique address is still global unique and vice versa). The reason forinverting can be found in RFC4291 section 2.5.1.Once the above is done, we have a fully functional EUI-64 format address. Reference: QUESTION 24A packet capture log indicates that several router solicitation messages were sent from a localhost on the Ipv6 segment. What is the expected acknowledgment and its usage? Section: (none) Explanation Explanation/Reference: Router Advertisements (RA) are sent in response to router solicitation messages. Router
- Download A+ VCE (latest) free Open VCE Exams - VCE to PDF Converter - VCE Exam Simulator - VCE Online - IT Certifications solicitation messages, which have a value of 133 in the Type field of the ICMP packet header, are sent by hosts at system startup so that the host can immediately autoconfigure without needing to wait for the next scheduled RA message. Given that router solicitation messages are usually sent by hosts at system startup (the host does not have a configured unicast address), the source address in router solicitation messages is usually the unspecified Ipv6 address (0:0:0:0:0:0:0:0). If the host has a configured unicast address, the unicast address of the interface sending the router solicitation message is used as the source address in the message. The destination address in router solicitation messages is the all-routers multicast address with a scope of the link. When an
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