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What does IPv6 use for address resolution?
Neighbor Discovery process
IPv6 uses Neighbor Discovery process (RFC 2461) rather than ARP protocol for the address resolution. SunATM 5.1 does not currently support address resolution through RFC 2461 over IPv6. Thus PVC and SVC address resolution over IPv6 must be statically configured.
How does ARP work with IPv6?
In IPv6, the Address Resolution Protocol (ARP) has been replaced by the Neighbor Discovery Protocol (NDP). The IPv4 command show arp is replaced by the IPv6 command show ipv6 neighbors . The key pieces of information displayed by this command are the IP address, the MAC (Link Layer) address, and the interface.
How does IPv6 use multicast?
IPv6 multicast improves network efficiency by allowing a host to transmit a datagram to a targeted group of receivers. For example, a host may want to send a large video clip to a group of selected recipients. It would be time-consuming for the host to unicast the datagram to each recipient individually.
What is a multicast address in IPv6?
The IPv6 multicast address provides a method for distributing identical information or services to a defined group of interfaces, called the multicast group. Typically, the interfaces of the multicast group are on different nodes. An interface can belong to any number of multicast groups.
Which of the following are valid IPv6 IP addresses?
The following are examples of valid IPv6 (normal) addresses:
- 2001:db8:3333:4444:5555:6666:7777:8888.
- 2001:db8:3333:4444:CCCC:DDDD:EEEE:FFFF.
- :: (implies all 8 segments are zero)
- 2001:db8:: (implies that the last six segments are zero)
- ::1234:5678 (implies that the first six segments are zero)
What replaced ARP?
ip neighbour command
The arp command has since been replaced by the ip neighbour command. The ip command suite was introduced in Linux 2.2. It contains many options for accomplishing these same tasks. Let’s take a look at the functionality that is offered by each of these programs.
What’s the difference between IPv4 and IPv6 multicast addresses?
IPv6 multicast addresses use the prefix ff00::/8, shown in Table 4-10, which is equivalent to the IPv4 multicast address 224.0.0.0/4. A packet sent to a multicast group always has a unicast source address. A multicast address can never be the source address. Unlike IPv4, there is no broadcast address in IPv6.
How does address resolution work with multicast address?
Pre-Defined Multicast Addresses: Solicited-Node multicast address are computed as a function of a node’s unicast and anycast addresses.
Is there a broadcast address in IPv6?
Unlike IPv4, there is no broadcast address in IPv6. Instead, IPv6 uses multicast, including an all-IPv6 devices well-known multicast address and a solicited-node multicast address.
How are solicited-node multicast addresses used in IPv4?
Solicited-node multicast addresses are used as a more efficient approach to IPv4’s broadcast address. As discussed in Chapter 2, the solicited-node multicast is used in Layer 3-to-Layer 2 address resolution, similar to how Address Resolution Protocol (ARP) is used in IPv4.