本书是锐捷认证互联网专家（RCIE）的配套教材，由锐捷金牌讲师、国家教学名师、锐捷RCIE认证讲师等共同完成，全面融入RCIE＆RS认证近期新标准，通过40个实战型案例，详实讲解了RCIE核心知识与应用，实现了书证融通，有助于读者快捷通过RCIE＆RS认证。本书适合具备一定网络基础的读者提升路由与交换技能。无论是准备参加RCIE-RS认证的考生，还是希望提升数通技能的网络工程师，都能从本书中获得帮助。

目 录
第 1 章 BGP 路由协议 ·····················································································.1
1.1 BGP 路径属性 ······················································································.1
1.1.1 Origin 属性··················································································.1
? 原理 ·······················································································.1
? 任务拓扑 ·················································································.1
? 实施步骤 ·················································································.1
? 任务验证 ·················································································.4
? 问题与思考 ··············································································.5
1.1.2 AS-Path 属性 ···············································································.5
? 原理 ·······················································································.5
? 任务拓扑 ·················································································.5
? 实施步骤 ·················································································.5
? 任务验证 ·················································································.7
? 问题与思考 ··············································································.8
1.1.3 Next-Hop 属性 ·············································································.8
? 原理 ·······················································································.8
? 任务拓扑 ·················································································.9
? 实施步骤 ·················································································.9
? 任务验证 ···············································································.11
? 问题与思考 ············································································.13
1.1.4 Local Preference 属性···································································.13
? 原理 ·····················································································.13
? 任务拓扑 ···············································································.14
? 实施步骤 ···············································································.14
? 任务验证 ···············································································.16
? 问题与思考 ············································································.17
1.1.5 MED 属性·················································································.17
? 原理 ·····················································································.17
? 任务拓扑 ···············································································.17
? 实施步骤 ···············································································.17
? 任务验证 ···············································································.19
? 问题与思考 ············································································.21
1.1.6 Community 属性 ···································································21
? 原理 ·····················································································.21
? 任务拓扑 ···············································································.22
? 实施步骤 ···············································································.22
? 任务验证 ···············································································.24
? 问题与思考 ············································································.26
1.2 BGP 选路原则 ····················································································.26
1.2.1 选路原则 1―优选 Weight 值大····················································.26
? 原理 ·····················································································.26
? 任务拓扑 ···············································································.26
? 实施步骤 ···············································································.26
? 任务验证 ···············································································.29
? 问题与思考 ············································································.30
1.2.2 选路原则 2―优选 Local Preference 值大········································.31
? 原理 ·····················································································.31
? 任务拓扑 ···············································································.31
? 实施步骤 ···············································································.31
? 任务验证 ···············································································.36
? 问题与思考 ············································································.42
1.2.3 选路原则 3―优选 AS-Path 长度短 ···············································.42
? 原理 ·····················································································.42
? 任务拓扑 ···············································································.42
? 实施步骤 ···············································································.42
? 任务验证 ···············································································.47
? 问题与思考 ············································································.51
1.2.4 选路原则 4―Origin 优选 i＞e＞?····················································.51
? 原理 ·····················································································.51
? 任务拓扑 ···············································································.52
? 实施步骤 ···············································································.52
? 任务验证 ···············································································.54
? 问题与思考 ············································································.55
1.2.5 选路原则 5―优选 MED 值小······················································.55
? 原理 ·····················································································.55
? 任务拓扑 ···············································································.56
? 实施步骤 ···············································································.56
? 任务验证 ···············································································.60
? 问题与思考 ············································································.62
1.2.6 选路原则 6―优选 EBGP 路由·····················································.63
? 原理 ·····················································································.63
? 任务拓扑 ···············································································.63
? 实施步骤 ···············································································.63
? 任务验证 ···············································································.66
? 问题与思考 ············································································.67
1.2.7 选路原则 7―优选最近的 IGP 邻居通告 ········································.67
? 原理 ·····················································································.67
? 任务拓扑 ···············································································.68
? 实施步骤 ···············································································.68
? 任务验证 ···············································································.71
? 问题与思考 ············································································.73
1.2.8 选路原则 8―等价负载······························································.73
? 原理 ·····················································································.73
? 任务拓扑 ···············································································.73
? 实施步骤 ···············································································.73
? 任务验证 ···············································································.76
? 问题与思考 ············································································.78
1.2.9 选路原则 9―优选 Router ID 值小 ················································.78
? 原理 ·····················································································.78
? 任务拓扑 ···············································································.79
? 实施步骤 ···············································································.79
? 任务验证 ···············································································.81
? 问题与思考 ············································································.82
1.2.10 选路原则 10―优选 Cluster List 短 ··············································.83
? 原理 ·····················································································.83
? 任务拓扑 ···············································································.83
? 实施步骤 ···············································································.83
? 任务验证 ···············································································.86
? 问题与思考 ············································································.88
1.2.11 选路原则 11―优选邻居 IP 地址小··············································.88
? 原理 ·····················································································.88
? 任务拓扑 ···············································································.88
? 实施步骤 ···············································································.88
? 任务验证 ···············································································.90
? 问题与思考 ············································································.92
1.3 BGP 高级特性 ····················································································.92
1.3.1 BGP 反射器···············································································.92
? 原理 ·····················································································.92
? 任务拓扑 ···············································································.93
? 实施步骤 ···············································································.93
? 任务验证 ···············································································.96
? 问题与思考 ············································································.98
1.3.2 BGP 联盟··················································································.98
? 原理 ·····················································································.98
? 任务拓扑 ···············································································.99
? 实施步骤 ···············································································.99
? 任务验证 ··············································································.103
? 问题与思考 ···········································································.105
1.3.3 BGP 汇总·················································································.105
? 原理 ····················································································.105
? 任务拓扑 ··············································································.106
? 实施步骤 ··············································································.106
? 任务验证 ··············································································.109
? 问题与思考 ···········································································.112
第 2 章 IS-IS 路由协议··················································································.113
2.1 IS-IS 协议配置···················································································.113
2.1.1 IS-IS 基础配置 ··········································································.113
? 原理 ····················································································.113
? 任务拓扑 ··············································································.114
? 实施步骤 ··············································································.114
? 任务验证 ··············································································.116
? 问题与思考 ···········································································.117
2.1.2 IS-IS 路由渗透配置 ····································································.117
? 原理 ····················································································.117
? 任务拓扑 ··············································································.118
? 实施步骤 ··············································································.118
? 任务验证 ··············································································.123
? 问题与思考 ···········································································.126
2.2 IS-IS 特性·························································································.127
2.2.1 IS-IS 协议认证配置 ·····································································127
? 原理 ····················································································.127
? 任务拓扑 ··············································································.127
? 实施步骤 ··············································································.127
? 任务验证 ··············································································.130
? 问题与思考 ···········································································.130
2.2.2 IS-IS 协议汇总配置 ·····································································130
? 原理 ····················································································.130
? 任务拓扑 ··············································································.131
? 实施步骤 ··············································································.131
? 任务验证 ··············································································.133
? 问题与思考 ···········································································.136
第 3 章 MPLS VPN 协议 ···············································································.137
3.1 MPLS 协议 ·······················································································.137
3.1.1 静态 MPLS 协议配置···································································137
? 原理 ····················································································.137
? 任务拓扑 ··············································································.138
? 实施步骤 ··············································································.138
? 任务验证 ··············································································.141
? 问题与思考 ···········································································.144
3.1.2 动态 MPLS LDP 协议配置 ····························································144
? 原理 ····················································································.144
? 任务拓扑 ··············································································.145
? 实施步骤 ··············································································.145
? 任务验证 ··············································································.148
? 问题与思考 ···········································································.151
3.2 MPLS VPN 协议·················································································.151
3.2.1 单域 VPN 实例配置·····································································151
? 原理 ····················································································.151
? 任务拓扑 ··············································································.153
? 实施步骤 ··············································································.154
? 任务验证 ··············································································.159
? 问题与思考 ···········································································.165
3.2.2 MPLS VPN-Hub Spoke 配置 ··························································165
? 原理 ····················································································.165
? 任务拓扑 ··············································································.165
? 实施步骤 ··············································································.165
? 任务验证 ··············································································.170
? 问题与思考 ···········································································.176
3.3 跨域 MPLS VPN·················································································.176
3.3.1 跨域 MPLS VPN-OptionA ·····························································176
? 原理 ····················································································.176
? 任务拓扑 ··············································································.176
? 实施步骤 ··············································································.177
? 任务验证 ··············································································.182
? 问题与思考 ···········································································.191
3.3.2 跨域 MPLS VPN-OptionB ·····························································191
? 原理 ····················································································.191
? 任务拓扑 ··············································································.192
? 实施步骤 ··············································································.192
? 任务验证 ··············································································.196
? 问题与思考 ···········································································.205
3.3.3 跨域 MPLS VPN-OptionC（1）······················································205
? 原理 ····················································································.205
? 任务拓扑 ··············································································.206
? 实施步骤 ··············································································.206
? 任务验证 ··············································································.210
? 问题与思考 ···········································································.224
3.3.4 跨域 MPLS VPN-OptionC（2）······················································224
? 原理 ····················································································.224
? 任务拓扑 ··············································································.224
? 实施步骤 ··············································································.224
? 任务验证 ··············································································.229
? 问题与思考 ···········································································.239
第 4 章 GRE Over IPSec VPN 协议···································································241
4.1 GRE 隧道 ·························································································.241
? 原理 ····················································································.241
? 任务拓扑 ··············································································.241
? 实施步骤 ··············································································.242
? 任务验证 ··············································································.243
? 问题与思考 ···········································································.245
4.2 GRE Over IPSec VPN 隧道 ·····································································245
? 原理 ····················································································.245
? 任务拓扑 ··············································································.247
? 实施步骤 ··············································································.247
? 任务验证 ··············································································.249
? 问题与思考 ···········································································.252
第 5 章 IPv6 协议·························································································.253
5.1 IPv6 路由协议····················································································.253
5.1.1 IPv6 静态路由协议······································································253
? 原理 ····················································································.253
? 任务拓扑 ··············································································.253
? 实施步骤 ···············································································254
? 任务验证 ··············································································.256
? 问题与思考 ···········································································.259
5.1.2 OSPFv3 路由协议 ······································································.260
? 原理 ····················································································.260
? 任务拓扑 ··············································································.260
? 实施步骤 ··············································································.260
? 任务验证 ··············································································.262
? 问题与思考 ···········································································.265
5.1.3 BGP4+路由协议 ········································································.265
? 原理 ····················································································.265
? 任务拓扑 ··············································································.265
? 实施步骤 ··············································································.265
? 任务验证 ··············································································.268
? 问题与思考 ···········································································.270
5.2 IPv6 过渡技术····················································································.270
5.2.1 IPv6 手工隧道（GRE）································································270
? 原理 ····················································································.270
? 任务拓扑 ··············································································.271
? 实施步骤 ··············································································.271
? 任务验证 ··············································································.273
? 问题与思考 ···········································································.275
5.2.2 IPv6 自动隧道（6to4） ································································275
? 原理 ····················································································.275
? 任务拓扑 ··············································································.276
? 实施步骤 ··············································································.276
? 任务验证 ··············································································.278
? 问题与思考 ···········································································.280
5.2.3 IPv6 自动隧道（ISATAP）····························································280
? 原理 ····················································································.280
? 任务拓扑 ··············································································.281
? 实施步骤 ··············································································.281
? 任务验证 ··············································································.284
? 问题与思考 ···········································································.287