IPV6 and VoIP Overview

"IPv6 configured Commands"

IPv6 Install/Installation IPv6, limited to XP system use

IPv6 unicast-routing/Enable IPv6 forwarding, configuring on the router

Show IPv6 router/view IPv6 routing Table

IPv6 router RIP test/enable RIP protocol, named Test, can omit this step

IPv6 rip test enable/Enter interface and apply RIP protocol

IPv6 router OSPF 1/enable OSPF protocol

IPv6 OSPF 1 Area 0/Enter interface and apply OSPF protocol

One, IPv6 and IPv4

(1), the concept of IPv4 and the existing problems

The #因特网所采用的是TCP/IP protocol family, IP is the Network layer protocol in TCP/IP protocol family, and it is also the core protocol of TCP/IP protocol family.

#IP协议的版本号是4, so called IPv4. The number of addresses used by IPC4 is 32 digits, which means that up to a single computer can connect to the Internet.

"Problems existing in the actual use of IPv4"

A low efficiency of address space use

(b) With the advent of various applications, the Internet must be able to adapt to real-time audio and video transmission. These types of transmissions require a minimum latency strategy and reserve resources, but are not provided in the IPV4 design.

c) IPV4 does not support mobility very well

(2), the origin of IPV6

#IPv6是下一版本的互联网协议, the IPV6 is defined in order to extend the address space.

#为了提供一个更为高效, new routing architectures that are more secure and better able to support the mainstream and mobility of different businesses IPv6 the ultimate success.

(3) The advantages of IPv6 relative to IPv4

1, larger address space

# IPV4 Address 32 digits, that is, the total address of 4294967296/=42 billion.

#IPv6中地址位为128位, the address space is =.

#IPv6可以让地球上的每平方米可分配的地址达6.5*, enough to allocate to a separate IPV6 address for every grain of sand on earth.

2, more efficient routing infrastructure

#IPv6头长固定, the head is simple, the route processing is efficient.

#IPv6采用PMTU传输数据.

#IPv6地址全球统一规划, can be well summarized, the backbone of the routing table small.

3, better security

IPV6 supports IPSec protocols and provides standards-based solutions for network security requirements for devices, applications, and services, and facilitates interoperability between different IPv6.

4, mobility

#IPv6允许IPv6节点成为移动的 (arbitrarily change the location on the IPV6 network) while still maintaining the existing connection.

#连接是使用分配给移动节点的特定永久地址建立的, the connection is maintained regardless of how many times the mobile node changes its location and address.

5, better quality of service (Qos)

A new field in the #IPv6报头中使用了一个被称为流标签 (flow lable) that defines how and how traffic is handled and marked.

#IPv6的包头中, a traffic type (traffic type) field is also defined that can be used to differentiate between different business flows.