英语 英语 日语 日语 韩语 韩语 法语 法语 德语 德语 西班牙语 西班牙语 意大利语 意大利语 阿拉伯语 阿拉伯语 葡萄牙语 葡萄牙语 越南语 越南语 俄语 俄语 芬兰语 芬兰语 泰语 泰语 泰语 丹麦语 泰语 对外汉语

豆知识 2010-12-26&2011-01-01 认识IPv6 (2/2)

时间:2011-09-02 05:48来源:互联网 提供网友:gmeng   字体: [ ]
特别声明:本栏目内容均从网络收集或者网友提供,供仅参考试用,我们无法保证内容完整和正确。如果资料损害了您的权益,请与站长联系,我们将及时删除并致以歉意。
    (单词翻译:双击或拖选)

 IPv6 is designed to meet the requirementsof the potentially huge Internet expansion. It will allow a return to a globalenvironment where the addressing rules of the network are transparent1 to theapplications again. Through autoconfiguration and plug-and-play support,network devices will be able to connect to the network without manual configurationand without any bootstrap services, such as DHCP service. 

 
 
 
IPv6 succeeds in doing this by providingthe following benefits to network and IT professionals.
 
 
 
First, IPv6 has a larger address spacefor global reachability and scalability. This will result in an almostunlimited number of IP addresses and a hierarchical network architecture forrouting efficiency. This eliminates the problems associated with NET. The abilityto provide global addresses for each network device and enables end-to-endreachability. And network management will be simpler and easier. 
 
 
 
Second, a simplified header format2 forefficient packet handling. 6 of the 12 IPv4 header fields have been removed inIPv6. Some IPv4 fields have been carried over with modified names and some newfields have been added to improve efficiency and introduce new features. 
 
 
 
Third, a hierarchical networkarchitecture for routing efficiency, that follows some of the IPv4 CIDR principles. 
 
 
 
Another important IPv6 benefit is theembedded security with mandatory3 IPsec implementation4. While the use of IPsecis optional in IPv4, IPsec is mandatory in IPv6. IPsec is part of the IPv6protocol suite6.
 
Therefore, network implementerscould enable IPsec in every IPv6 node, potentially making the networks moresecure. 
 
 
 
Additionally, IPv6 offers an increasednumber of multicast addresses. IPv6 will not use broadcast, leading to a more performant network. 
 
 
 
Moreover, in IPv6 the ICMP protocol5 hasbeen revised. ICMP version six has become much more powerful and includes newfunctions to support autoconfiguration, neighbor discovery and multicasting. 
 
 
 
And finally, IPv6 offers built-inmobility as the anticipated large rollout of wireless7 data services is a keyIPv6 driver.

点击收听单词发音收听单词发音  

1 transparent Smhwx     
adj.明显的,无疑的;透明的
参考例句:
  • The water is so transparent that we can see the fishes swimming.水清澈透明,可以看到鱼儿游来游去。
  • The window glass is transparent.窗玻璃是透明的。
2 format giJxb     
n.设计,版式;[计算机]格式,DOS命令:格式化(磁盘),用于空盘或使用过的磁盘建立新空盘来存储数据;v.使格式化,设计,安排
参考例句:
  • Please format this floppy disc.请将这张软盘格式化。
  • The format of the figure is very tasteful.该图表的格式很雅致。
3 mandatory BjTyz     
adj.命令的;强制的;义务的;n.受托者
参考例句:
  • It's mandatory to pay taxes.缴税是义务性的。
  • There is no mandatory paid annual leave in the U.S.美国没有强制带薪年假。
4 implementation 2awxV     
n.实施,贯彻
参考例句:
  • Implementation of the program is now well underway.这一项目的实施现在行情看好。
5 protocol nRQxG     
n.议定书,草约,会谈记录,外交礼节
参考例句:
  • We must observe the correct protocol.我们必须遵守应有的礼仪。
  • The statesmen signed a protocol.那些政治家签了议定书。
6 suite MsMwB     
n.一套(家具);套房;随从人员
参考例句:
  • She has a suite of rooms in the hotel.她在那家旅馆有一套房间。
  • That is a nice suite of furniture.那套家具很不错。
7 wireless Rfwww     
adj.无线的;n.无线电
参考例句:
  • There are a lot of wireless links in a radio.收音机里有许多无线电线路。
  • Wireless messages tell us that the ship was sinking.无线电报告知我们那艘船正在下沉。
本文本内容来源于互联网抓取和网友提交,仅供参考,部分栏目没有内容,如果您有更合适的内容,欢迎点击提交分享给大家。
------分隔线----------------------------
TAG标签:   豆知识  认识IPv6  豆知识  认识IPv6
顶一下
(1)
100%
踩一下
(0)
0%
最新评论 查看所有评论
发表评论 查看所有评论
请自觉遵守互联网相关的政策法规,严禁发布色情、暴力、反动的言论。
评价:
表情:
验证码:
听力搜索
推荐频道
论坛新贴