Features and advantages of a simple read IPv6 route

What IPv6 brings us is not only the addition of address capacity, but also many benefits and advantages. One of them is IPv6 routing. In this Protocol version, it has the advantages of being more flexible and cost-saving. In large network maintenance, it improves the scale and use of Route tables.

IPv6 Routing

One of the advantages of IPv6 is its flexible IPv6 routing mechanism. Because the IPv4 network ID is assigned, a router located on the Internet hub is required to maintain a large route table. These routers must know all the routes to forward data packets that may be directed to any node on the Internet. Through its ability to aggregate addresses, IPv6 supports flexible addressing, greatly reducing the size of the route table. In this new addressing structure, the intermediate router must only track the local part of its network to properly forward messages.

Neighbor Discovery

Neighbor Discovery provides the following functions:

◆ IPv6 router discovery.

This allows the host to identify the local router.

◆ Address resolution.

This allows the node to parse the link layer address for the corresponding next hop address to replace the Address Resolution Protocol [ARP]).

◆ Automatic address configuration.

This allows the host to automatically configure the site-local address and global address.

When a neighbor discovers that the Internet-controlled message protocol is used for IPv6ICMPIPv6 messages, these messages include:

◆ Router advertisement.

The router sends a request based on a pseudo-regular request or responds to the router request. An IPv6 router uses a router advertisement to publish its availability, address prefix, and other parameters.

◆ Router request.

A router that is sent by a host and used to send a router advertisement immediately on the request link.

◆ Neighbor request.

It is sent by the node for address resolution, duplicate address detection, or for confirming that the neighbor is still accessible.

◆ Neighbor Advertisement.

Sent by the node to respond to a neighbor request or notify the neighbor link layer address of a change.

◆ Redirection.

A vro sends a node to indicate a better next hop address pointing to a specific target.