tcp/ip协议分片-阿里云

TCP/IP协议中分包与重组原理介绍、分片偏移量的计算方法、IPv4报文格式

一、什么是IP分片IP分片是网络上传输IP报文的一种技术手段。IP协议在传输数据包时，将数据报文分为若千分片进行传输，并在目标系统中进行重组,这一过程称为分片(fragmentation).二，为什么要进行IP分片（1500) 6+6+2+4以太网技术支持帧大小最大为1518字节。通常以太网接口默...

TCP/IP协议栈中，为什么选择IP层负责分片？

这是知乎上被邀请的一个问题TCP/IP协议栈中，为什么选择IP层负责分片？，我从没思考过这个问题甚至不认为这是个有意义的问题，但是当我研究思考后却发现这么一个小问题也许正是当初设计TCP/IP协议栈时的一种考量。 TCP/IP是一个分层协议，协议栈的最底层是链路层，接下来依次是网络层，传输层，应用层...

共有2条

< 1 >

跳转至： GO

更新时间 2024-05-01 05:09:04

本页面内关键词为智能算法引擎基于机器学习所生成，如有任何问题，可在页面下方点击"联系我们"与我们沟通。

产品推荐

{"optioninfo":{"dynamic":"ture","static":"true"},"simplifiedDisplay":"newEdition","newCard":[{"ifIcon":"img","link":"https://img.alicdn.com/tfs/TB1XY8hGYr1gK0jSZFDXXb9yVXa-1740-328.png","icon":"","iconImg":"https://img.alicdn.com/tfs/TB11pMF2vb2gK0jSZK9XXaEgFXa-200-200.png","contentLink":"https://www.aliyun.com/product/eip","title":"弹性公网IP","des":"独立的公网IP资源，可以与阿里云专有网络VPC类型的ECS、NAT网关、ENI网卡、私网负载均衡SLB绑定，并可以动态解绑，实现公网IP与ECS、NAT网关、ENI网卡、SLB的解耦，满足灵活管理的要求。","link1":"https://ip.console.aliyun.com/?spm=5176.139640.719694.btn2.c3e72d2736HAes","btn1":"产品控制台","link2":"https://common-buy.aliyun.com/eip/postpay?spm=5176.139640.719694.btn1.c3e72d2736HAes#/buy","btn2":"立即购买","btn3":"产品文档","link3":"https://help.aliyun.com/document_detail/32321.html?spm=5176.139640.719694.btn4.c3e72d2736HAes","infoGroup":[{"infoName":"优惠活动","infoContent":{"firstContentName":"1-5M新用户低至3折起","firstContentLink":"https://common-buy.aliyun.com/?commodityCode=eip_pre&request=%7B%22ord_time%22:%221:Year%22,%22order_num%22:1,%22region%22:%22cn-qingdao-cm5-a01%22,%22isp%22:%22BGP%22,%22netmode%22:%22public%22,%22bandwidth%22:1%7D&regionId=cn-qingdao-cm5-a01","lastContentLink":"","lastContentName":""}},{"infoName":"产品入门","infoContent":{"firstContentName":"用户指南","lastContentName":"常见问题","firstContentLink":"https://help.aliyun.com/document_detail/170919.html?spm=a2c4g.11186623.6.549.4f6034dabV4QKR","lastContentLink":"https://help.aliyun.com/document_detail/65435.html"}},{"infoName":"最佳实践","infoContent":{"firstContentLink":"https://help.aliyun.com/document_detail/119716.html?spm=a2c4g.11186623.6.600.4f6034dabV4QKR","firstContentName":"普通模式下网卡多EIP","lastContentName":"EIP部署FTP服务器","lastContentLink":"https://help.aliyun.com/document_detail/98758.html?spm=a2c4g.11186623.6.601.4f6034dabV4QKR"}},{"infoName":"最新动态","infoContent":{"firstContentLink":"https://www.aliyun.com/product/news?spm=5176.139640.1265486.211view.c3e72d2736HAes&category=10&product=148","firstContentName":"产品最新动态","lastContentLink":"","lastContentName":""}}]}],"card":[],"search":[],"infoCard":[{"bannerUrl":"https://img.alicdn.com/tfs/TB1Xf81a3gP7K4jSZFqXXamhVXa-5169-974.jpg","bannerTitle":"mPaaS 小程序","bannerContent":"源自于支付宝小程序框架，亿级线上业务体量的锤炼，安全性媲美支付宝原生能力。<br>不仅面向自有 App 投放小程序，更可快速构建打包，覆盖支付宝、淘宝、钉钉等应用。","liveButtonName":"查看详情","liveButtonLink":"https://www.aliyun.com/product/mobilepaas/mpaas-miniprogram","contentTitle":"提供即开即用的端上体验","homePageLink":"https://common-buy.aliyun.com/?spm=5176.14673561.J_8751524360.2.56702709BussF3&commodityCode=mpaas_beta#/open","homePageName":"免费试用","linkGroup":[{"linkContent":"发布包大小极致优化，节省流量和存储。"},{"linkContent":"服务迭代不再受发版限制，快速发布，快速迭代。"},{"linkContent":"业务开发效率更加优秀，一次开发，多端运行。"}]}],"title":{"mainTitle":"mPaaS","subtitle":"源自于支付宝小程序框架，亿级线上业务体量的锤炼，安全性媲美支付宝原生能力。不仅面向自有 App 投放小程序，更可快速构建打包，覆盖支付宝、淘宝、钉钉等应用。","linkUrl":"https://www.aliyun.com/product/mobilepaas/mpaas-miniprogram","btnText":"查看详情"},"visual":{"topbg":"https://img.alicdn.com/tfs/TB1bQuBIYH1gK0jSZFwXXc7aXXa-3840-740.gif","icon":"","textColor":"dark"},"dataList":[{"summary":"啦啦啦","author":"wuwu","linksUrl":"#"}],"sceneCard":[],"txt":[]}

{"$env":{"JSON":{}},"$page":{"env":"production"},"$context":{"optioninfo":{"dynamic":"ture","static":"true"},"simplifiedDisplay":"newEdition","newCard":[{"ifIcon":"img","link":"https://img.alicdn.com/tfs/TB1XY8hGYr1gK0jSZFDXXb9yVXa-1740-328.png","icon":"","iconImg":"https://img.alicdn.com/tfs/TB11pMF2vb2gK0jSZK9XXaEgFXa-200-200.png","contentLink":"https://www.aliyun.com/product/eip","title":"弹性公网IP","des":"独立的公网IP资源，可以与阿里云专有网络VPC类型的ECS、NAT网关、ENI网卡、私网负载均衡SLB绑定，并可以动态解绑，实现公网IP与ECS、NAT网关、ENI网卡、SLB的解耦，满足灵活管理的要求。","link1":"https://ip.console.aliyun.com/?spm=5176.139640.719694.btn2.c3e72d2736HAes","btn1":"产品控制台","link2":"https://common-buy.aliyun.com/eip/postpay?spm=5176.139640.719694.btn1.c3e72d2736HAes#/buy","btn2":"立即购买","btn3":"产品文档","link3":"https://help.aliyun.com/document_detail/32321.html?spm=5176.139640.719694.btn4.c3e72d2736HAes","infoGroup":[{"infoName":"优惠活动","infoContent":{"firstContentName":"1-5M新用户低至3折起","firstContentLink":"https://common-buy.aliyun.com/?commodityCode=eip_pre&request=%7B%22ord_time%22:%221:Year%22,%22order_num%22:1,%22region%22:%22cn-qingdao-cm5-a01%22,%22isp%22:%22BGP%22,%22netmode%22:%22public%22,%22bandwidth%22:1%7D&regionId=cn-qingdao-cm5-a01","lastContentLink":"","lastContentName":""}},{"infoName":"产品入门","infoContent":{"firstContentName":"用户指南","lastContentName":"常见问题","firstContentLink":"https://help.aliyun.com/document_detail/170919.html?spm=a2c4g.11186623.6.549.4f6034dabV4QKR","lastContentLink":"https://help.aliyun.com/document_detail/65435.html"}},{"infoName":"最佳实践","infoContent":{"firstContentLink":"https://help.aliyun.com/document_detail/119716.html?spm=a2c4g.11186623.6.600.4f6034dabV4QKR","firstContentName":"普通模式下网卡多EIP","lastContentName":"EIP部署FTP服务器","lastContentLink":"https://help.aliyun.com/document_detail/98758.html?spm=a2c4g.11186623.6.601.4f6034dabV4QKR"}},{"infoName":"最新动态","infoContent":{"firstContentLink":"https://www.aliyun.com/product/news?spm=5176.139640.1265486.211view.c3e72d2736HAes&category=10&product=148","firstContentName":"产品最新动态","lastContentLink":"","lastContentName":""}}]}],"card":[],"search":[],"infoCard":[{"bannerUrl":"https://img.alicdn.com/tfs/TB1Xf81a3gP7K4jSZFqXXamhVXa-5169-974.jpg","bannerTitle":"mPaaS 小程序","bannerContent":"源自于支付宝小程序框架，亿级线上业务体量的锤炼，安全性媲美支付宝原生能力。<br>不仅面向自有 App 投放小程序，更可快速构建打包，覆盖支付宝、淘宝、钉钉等应用。","liveButtonName":"查看详情","liveButtonLink":"https://www.aliyun.com/product/mobilepaas/mpaas-miniprogram","contentTitle":"提供即开即用的端上体验","homePageLink":"https://common-buy.aliyun.com/?spm=5176.14673561.J_8751524360.2.56702709BussF3&commodityCode=mpaas_beta#/open","homePageName":"免费试用","linkGroup":[{"linkContent":"发布包大小极致优化，节省流量和存储。"},{"linkContent":"服务迭代不再受发版限制，快速发布，快速迭代。"},{"linkContent":"业务开发效率更加优秀，一次开发，多端运行。"}]}],"title":{"mainTitle":"mPaaS","subtitle":"源自于支付宝小程序框架，亿级线上业务体量的锤炼，安全性媲美支付宝原生能力。不仅面向自有 App 投放小程序，更可快速构建打包，覆盖支付宝、淘宝、钉钉等应用。","linkUrl":"https://www.aliyun.com/product/mobilepaas/mpaas-miniprogram","btnText":"查看详情"},"visual":{"topbg":"https://img.alicdn.com/tfs/TB1bQuBIYH1gK0jSZFwXXc7aXXa-3840-740.gif","icon":"","textColor":"dark"},"dataList":[{"summary":"啦啦啦","author":"wuwu","linksUrl":"#"}],"sceneCard":[],"txt":[]}}