- 1、本文档共139页,可阅读全部内容。
- 2、有哪些信誉好的足球投注网站(book118)网站文档一经付费(服务费),不意味着购买了该文档的版权,仅供个人/单位学习、研究之用,不得用于商业用途,未经授权,严禁复制、发行、汇编、翻译或者网络传播等,侵权必究。
- 3、本站所有内容均由合作方或网友上传,本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺!文档内容仅供研究参考,付费前请自行鉴别。如您付费,意味着您自己接受本站规则且自行承担风险,本站不退款、不进行额外附加服务;查看《如何避免下载的几个坑》。如果您已付费下载过本站文档,您可以点击 这里二次下载。
- 4、如文档侵犯商业秘密、侵犯著作权、侵犯人身权等,请点击“版权申诉”(推荐),也可以打举报电话:400-050-0827(电话支持时间:9:00-18:30)。
- 5、该文档为VIP文档,如果想要下载,成为VIP会员后,下载免费。
- 6、成为VIP后,下载本文档将扣除1次下载权益。下载后,不支持退款、换文档。如有疑问请联系我们。
- 7、成为VIP后,您将拥有八大权益,权益包括:VIP文档下载权益、阅读免打扰、文档格式转换、高级专利检索、专属身份标志、高级客服、多端互通、版权登记。
- 8、VIP文档为合作方或网友上传,每下载1次, 网站将根据用户上传文档的质量评分、类型等,对文档贡献者给予高额补贴、流量扶持。如果你也想贡献VIP文档。上传文档
查看更多
BGP全系列
BGP Basics Reasons for Using BGP You need to scale your IGP You’re multihomed and need to implement routing policy You need to transit full Internet routes Interior vs. Exterior Routing Interior Automatic discovery Generally trust your IGP routers Routes go to all IGP routers Exterior Specifically configured peers Connecting with outside networks Set administrative boundaries Why Do We Need an EGP? Scaling a large network—“Divide and Conquer” Hierarchy Periodic IGPs/flooding Isolate network instability Complex policies Control reachability to prefixes Merge separate organizations Connect multiple IGPs Concept of Autonomous System A network(s) sharing the same routing policy Possibly multiple IGPs Usually under single administrative control Contiguous internal connectivity Numbering range form 1 to 65,535—Globally unique—“AS Number” Private range: 64512–65535 IGP of Each AS Is Hidden You Need to Transit Internet Routes (i.e., You Are an ISP) Basic to Basics Runs over TCP—Port 179 Path vector protocol Incremental updates “Internal” and “External” BGP General Operation Learns multiple paths via internal and external BGP speakers Picks the most preferred path, installs itin the IP forwarding table, forwards to BGP neighbors Policies applied by influencing the bestpath selection Summary of Operation TCP connection established (port 179) Both peers attempt to connect—There is an algorithm to resolve “connection collisions” Exchange messages to open and confirm the connection parameters Initial exchange of entire table Incremental updates after initial exchange Keepalive messages exchanged when there are no updates What Are Incremental Updates? IGPs typically rebroadcast routes BGP runs over TCP = reliable date delivery Once BGP sends a route to a peer, it assumes the peer will keep it unless: A replacement route is sent—Implicit withdraw of old route The route is withdrawn—Explicit withdraw The BGP session goes down (keepalive failure) BGP Sessions—TCP Port 179,
您可能关注的文档
- AGENDA卖场促销活动结案.ppt
- Amdocs数字交付体验.ppt
- andy五大入口课件.ppt
- -背景图高清露水水珠桌面壁纸.ppt
- ANSYS,LS_DYNA,培训手册 第一章.ppt
- Ansys 固体振动模拟 Shock simulations in solid targets.ppt
- ANSYS,LS_DYNA,培训手册 第三章.ppt
- ANSYS,LS_DYNA,培训手册 第十一章.ppt
- aop技术详解.ppt
- App Store进化论.docx
- DB42T 1823-2022 欧洲报春盆花生产技术规程.docx
- DB42T 1960-2023 中药材 半夏大棚生产技术规程.docx
- DB42T 1914-2022 森林环境负氧离子浓度监测技术规范.docx
- DB42T 1893-2022 地质勘查单位安全生产培训与考核规范.docx
- DB42T 2064.2-2023 建筑信息模型审查系统规范 第2部分:模型交付规范.docx
- DB42T 1920.1-2022 稻田生态协同种养技术规程 第1部分:“稻—鸭—蛙”模式.docx
- DB42T 1913-2022 湖北主要药用石斛生态栽培技术规程.docx
- DB42T 1896-2022 铁坚油杉容器育苗技术规程.docx
- DB42T 2058-2023 持续低温雨雪冰冻过程强度等级.docx
- DB42T 2048-2023 车用压缩氢气加氢站运营管理规范.docx
文档评论(0)