Contents
- 1 Do link-local addresses require router for configuration?
- 2 What is the difference between link local unique local and global addresses in IPv6?
- 3 What is the major limitation of link-local addresses?
- 4 What is the source link layer address field in NDP?
- 5 What is the format for NDP ( neighbour Discovery Protocol )?
Do link-local addresses require router for configuration?
A link-local address is an IPv6 unicast address that can be automatically configured on any interface using the link-local prefix FE80::/10 (1111 1110 10) and the interface identifier in the modified EUI-64 format. Routers will not forward datagram using link-local addresses.
What is the purpose of link local IPv6 addresses?
Introduction. IPv6 link-local addresses are addresses that can be used to communicate with nodes (hosts and routers) on an attached link. Packets with those addresses are not forwarded by routers.
What is the difference between link local unique local and global addresses in IPv6?
Global unicast addresses are routable on the Internet. Link-local IPv6 address—An IPv6 address that allows communication between neighboring hosts that reside on the same link. Link-local addresses have a local scope, and cannot be used outside the link. They always have the prefix FE80::/10.
How do I setup a local link on my router?
Configuring a link-local IPv6 address on an interface
- Enter global configuration mode. device# configure terminal.
- Enter interface configuration mode. device(config)# interface ethernet 3/1.
- Configure a link-local IPv6 address for the interface. device(config-if-e1000-3/1)# ipv6 address FE80::240:D0FF:FE48:4672 link-local.
What is the major limitation of link-local addresses?
The limitation of link-local addresses is that IPv6 routers cannot forward link-level traffic outside the link.
What does link local only mean?
In computer networking, a link-local address is a network address that is valid only for communications within the network segment or the broadcast domain that the host is connected to.
What is the source link layer address field in NDP?
Source Link-Layer Address field in in NDP (Neighbour Discovery Protocol) Router Solicitation (RS) message contains the MAC address of the sender. This field is used by the IPv6 router to determine the unicast MAC address of the host who sent the Router Solicitation (RS) message.
How are neighbor solicitation messages sent in NDP?
NDP (Neighbour Discovery Protocol) Neighbor solicitation messages are sent by an IPv6 device to resolve the link-layer address ( MAC Address) of another IPv6 device. The source IPv6 address in a NDP (Neighbour Discovery Protocol) Neighbor Solicitation message is the IPv6 address of the corresponding interface in the local-link.
What is the format for NDP ( neighbour Discovery Protocol )?
The format for NDP (Neighbour Discovery Protocol) Router Solicitation (RS) message is shown below. Following screen shot is a Wireshark capture of NDP (Neighbour Discovery Protocol) Router Solicitation (RS) message. Following table provides more information about NDP (Neighbour Discovery Protocol) Router Solicitation (RS) message fields.
How is the Ra value used in NDP?
Router Lifetime in NDP (Neighbour Discovery Protocol) Router Advertisement (RA) message is used to indicate the hosts in LAN receiving the NDP (Neighbour Discovery Protocol) Router Advertisement (RA) message that how long, the advertising router to be treated as the default router. This value is in seconds