ipv6shiinternet protocol version 6desuoxie,tashiietfshexiangdeyongyutihuanxianxingbanbeniphetan-ipv4-dexiayidaiiphetan。jinchaodehuanqiuyintewangsuojienadehetanzushitcp/iphetanzu。ipshitcp/iphetanzuzhongshoujicengdehetan,shitcp/iphetanzudejiaodianhetan。ipv6zhengchuzaibushichengzhanghewanmeidejinchengzhong,tazaiweijidejianglaijiangdaitijinchaobeipubiancaozongdeipv4。meiyigerenjiangjubeigengduoipdidian。

简介

jinchaozanmencaozongdedierdaihulianwangipv4jishu,jiaodianjishushuyumeiguo。tadezuidatimushishoujididianzibenyouxian,congshijishangjiang,bianzhi1600wangeshouji、40yitaizhuji。danjienaa、b、csanleibianzhitilihou,keyongdeshoujididianhezhujididiandeshumudadakoutou,yizhijinchaodeipdidianjinhuganhe。cizhongbeimeijuyou3/4,yue30yige,ershengchizuiduodeyazhouzhiyaobudao4yige,zhongguotingzhi2010nian6yueipv4didianshumudaoda2.5yi,diaoduiyu4.2yiwangmindexuyao。didianquefa,yanjundixiandinglewoguojiqiyuguoduhulianwangdecaozonghechengzhang。

yifangmianshididianzibenshumudexianding,lingwaiyifangmianshigenzhedianzijishujishoujijishudechengzhang,jijiaojishoujijiangjinrurenmendepingchanghukou,nenggoushenpangdemeiyanggongjudouxuyaolianruhuanqiuyintewang。zairuxudeqingkuangxia,ipv6yingyunersheng。dancongshuzixiaqushuo,ipv6suojubeidedidianrongliangshiipv4deyue8×10^28bei,daoda2^128(suanshangquanlingde)ge。zheiqidanchuzhileshoujididianzibenshumudetimu,tongshiyeweichudiannaowaidezhuangbeilianruhulianwangzaishumuxiandingshangsaoqinglefangai。keshiyuipv4yiyang,ipv6yiyanghuixingchengdapideipdidianhuachi。jingquedeshuo,caozong ipv6deshoujibingbu2^128genengchongshicaozongdedidian。qishou,yaowanchengipdidiandezhudongshezhizhuangbeibaishe,juyuwangsuocaozongdeziwangdeqianzhuibixujishi64,keshihenshaoyouyigejuyuwangnengbaorong2^64geshoujizhongduan;qici,yinweiipv6dedidianfenpaibixuzunshoujuleidezhunsheng,didiandehuachizaisuobumian。keshi,ruoshishuoipv4wanchengdezhishirenjiduihua,eripv6zekuodajiurenyishiwuzhijiandeduihua,tabuzhinenggouweirenleibanshi,haijiangbanshiyuhaofanyingjianzhuangbei,rujiayongdianqi、chuanganqi、zhangtupaizhaoji、qichedeng,tajiangshiwushibuzai,wuchubuzaideshenqieshehuimeiyigejiaoluodezhenshidekuandaiwang。bingqietasuodailaidejingjixiaoyijianghenshipangda。guran,ipv6bingfeihunranyiti、yurijuzeng,bunenggouchuzhiyiqietimu。ipv6zhinengzaichengzhangzhongbushiwanmei,yebunenggouzaiyiyezhijianchansheng,guoduxuyaoshihouhebenqian,dancongjiuyuankan,ipv6youyiyuhulianwangdeyanxuhejiuzhangchengzhang。 jinchao,guojihulianwanggouzaoyijueyijianlilianggetedirenwuzu,nidingxiangyingdeguojiguifan。

特色:

(1)ipv6didianzhangduwei128bite,didiankongjianzengdale2de96cifangbei;

(2)jiaojiedeipbaowentoubugeju。caozongyixilielaogugejudekuodatoubudaitileipv4zhongkebianzhangdudexuanxiangziduan。ipv6dangxuanxiangjubudechengxiantiliyeyousuobiangeng,shiluyouqinenggoujianlvetujingxuanxiangerbuzuorenneibianli,jiasulebaowenchuzhisulv;

(3)ipv6jianhualebaowentoubugeju,ziduanzhiyao7ge,jiasubaowenzhuanfa,jinbuletuntuliang;

(4)jinbuningjingxing。shenfenrenzhengheyinzhongquanshiipv6deguanjiantezheng;

(5)chengchigengduodebanshifanli;

(6)xukehetanchixuyanhua,zengtianxindegongxiao,shizhishunyingjianglaijishudechengzhang;

上风: 与IPV4比拟,IPV6具备以下几个上风:

yi、pv6jubeigengdadedidiankongjian。ipv4zhonghuadingipdidianzhangduwei32,jiyou2^32-1(biaoji^biaoxianshengmi,xiatong)gedidian;eripv6zhongipdidiandezhangduwei128,jiyou2^128-1gedidian。

er、ipv6caozonggengxiaodeluyoubiao。ipv6dedidianfenpaiyiqitoujiuzunshoujulei(aggregation)dezhunsheng,zheishideluyouqinengzailuyoubiaodingyongyibijilu(entry)biaoxianyidianyingwang,dadajianxiaoleluyouqizhongluyoubiaodezhangdu,jinbuleluyouqizhuanfashujubaodesulv。

san、ipv6zengtianlejiaqiangdezubo(multicast)chengchiheduiliudechengchi(flow control),zheishideshoujishangdeduomeiticaozongyoulezhangzuchengzhangdejiyu,weibanshipinzhi(qos,quality of service)jiezhigongjilejiechudeshoujipingtai。

si、pv6chashouleduizhudongshezhizhuangbeibaishe(auto configuration)dechengchi。zheishiduidhcphetandegailianghekuoda,shideshouji(tebieshijuyuwang)debanlijiabeibianlihekuaisu。

wu、ipv6jubeigenggaodeningjingxing。zaicaozongipv6shoujidingyonghunenggouduishoujicengdeshujutingzhijiamibingduiipbaowentingzhixiaoyan,jidadejiaqiangleshoujideningjingxing。


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