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华为路由器配置指南-MPLS技术指南 (539页精华版) 目前网上最强的华为MPLS配置技术 |
华为路由器配置指南-MPLS技术指南 (539页精华版)
前 言...................................................................................................................................................iii 1 静态LSP 配置..............................................................................................................................1-1 1.1 静态LSP 配置简介........................................................................................................................................1-2 1.1.1 静态LSP 概述.......................................................................................................................................1-2 1.1.2 NE80E/40E 支持的静态LSP 特性.......................................................................................................1-2 1.2 配置静态LSP.................................................................................................................................................1-2 1.2.1 建立配置任务........................................................................................................................................1-3 1.2.2 配置LSR ID..........................................................................................................................................1-4 1.2.3 使能MPLS............................................................................................................................................1-4 1.2.4 配置静态LSP 的Ingress......................................................................................................................1-4 1.2.5 配置静态LSP 的Transit.......................................................................................................................1-5 1.2.6 配置静态LSP 的Egress.......................................................................................................................1-5 1.2.7 检查配置结果........................................................................................................................................1-5 1.3 配置静态BFD 检测静态LSP.......................................................................................................................1-6 1.3.1 建立配置任务........................................................................................................................................1-7 1.3.2 使能全局BFD 能力..............................................................................................................................1-7 1.3.3 配置Ingress BFD 参数..........................................................................................................................1-8 1.3.4 配置Egress BFD 参数..........................................................................................................................1-9 1.3.5 检查配置结果......................................................................................................................................1-10 1.4 维护静态LSP...............................................................................................................................................1-11 1.4.1 清除MPLS 的统计信息.....................................................................................................................1-11 1.4.2 检测LSP 连通性/可达性....................................................................................................................1-11 1.4.3 配置LDP LSP 的Trap 功能...............................................................................................................1-12 1.4.4 调试MPLS..........................................................................................................................................1-12 1.5 配置举例.......................................................................................................................................................1-13 1.5.1 配置静态LSP 示例.............................................................................................................................1-13 1.5.2 配置静态BFD 检测静态LSP 示例...................................................................................................1-20 2 MPLS LDP 配置..........................................................................................................................2-1 2.1 MPLS LDP 配置简介.....................................................................................................................................2-3 2.1.1 MPLS LDP 概述....................................................................................................................................2-3 2.1.2 NE80E/40E 支持的MPLS LDP 特性...................................................................................................2-3 2.2 配置LDP 会话...............................................................................................................................................2-5 2.2.1 建立配置任务........................................................................................................................................2-5 2.2.2 配置LSR ID..........................................................................................................................................2-7 2.2.3 使能MPLS............................................................................................................................................2-7 2.2.4 使能全局MPLS LDP............................................................................................................................2-8 2.2.5 配置LDP 会话......................................................................................................................................2-8 2.2.6 (可选)配置LDP 传输地址..............................................................................................................2-9 2.2.7 (可选)配置LDP 定时器................................................................................................................2-10 2.2.8 (可选)配置LDP MD5 认证...........................................................................................................2-13 2.2.9 检查配置结果......................................................................................................................................2-14 2.3 配置LDP LSP..............................................................................................................................................2-16 2.3.1 建立配置任务......................................................................................................................................2-17 2.3.2 建立LDP LSP.....................................................................................................................................2-18 2.3.3 (可选)配置LDP 环路检测............................................................................................................2-18 2.3.4 (可选)配置LDP MTU 信令功能..................................................................................................2-18 2.3.5 (可选)配置LDP 水平分割策略....................................................................................................2-19 2.3.6 (可选)配置LSP 建立的触发策略.................................................................................................2-19 2.3.7 (可选)配置Transit LSP 建立的触发策略.....................................................................................2-20 2.3.8 检查配置结果......................................................................................................................................2-20 2.4 配置LDP 多实例.........................................................................................................................................2-21 2.4.1 建立配置任务......................................................................................................................................2-22 2.4.2 配置LDP 多实例................................................................................................................................2-22 2.4.3 检查配置结果......................................................................................................................................2-23 2.5 配置静态BFD 检测LDP LSP.....................................................................................................................2-23 2.5.1 建立配置任务......................................................................................................................................2-24 2.5.2 使能全局BFD 能力............................................................................................................................2-24 2.5.3 配置Ingress BFD 参数........................................................................................................................2-25 2.5.4 配置Egress BFD 参数........................................................................................................................2-26 2.5.5 检查配置结果......................................................................................................................................2-28 2.6 配置动态BFD 检测LDP LSP.....................................................................................................................2-28 2.6.1 建立配置任务......................................................................................................................................2-28 2.6.2 使能全局BFD 能力............................................................................................................................2-29 2.6.3 使能MPLS 动态创建BFD 会话功能................................................................................................2-29 2.6.4 配置动态BFD 检测LDP LSP 的触发策略.......................................................................................2-30 2.6.5 (可选)调整BFD 检测参数............................................................................................................2-30 2.6.6 检查配置结果......................................................................................................................................2-31 2.7 配置Manual LDP FRR.................................................................................................................................2-33 2.7.1 建立配置任务......................................................................................................................................2-33 2.7.2 使能Manual LDP FRR 功能...............................................................................................................2-34 2.7.3 (可选)配置Manual LDP FRR 保护定时器...................................................................................2-34 2.7.4 (可选)允许BFD 修改端口状态表................................................................................................2-35 2.7.5 检查配置结果......................................................................................................................................2-35 2.8 配置LDP Auto FRR.....................................................................................................................................2-36 2.8.1 建立配置任务......................................................................................................................................2-36 2.8.2 使能LDP Auto FRR 功能...................................................................................................................2-37 2.8.3 检查配置结果......................................................................................................................................2-37 2.9 配置LDP 和IGP 同步.................................................................................................................................2-38 2.9.1 建立配置任务......................................................................................................................................2-38 2.9.2 使能LDP 和IGP 同步功能................................................................................................................2-39 2.9.3 (可选)设置hold-down 定时器的值...............................................................................................2-39 2.9.4 (可选)设置hold-max-cost 定时器的值.........................................................................................2-40 2.9.5 (可选)设置delay 定时器的值.......................................................................................................2-41 2.9.6 检查配置结果......................................................................................................................................2-41 2.10 配置VLAN 的IGMP Snooping 快速加入功能.......................................................................................2-42 2.10.1 建立配置任务....................................................................................................................................2-42 2.10.2 配置LDP GTSM...............................................................................................................................2-43 2.10.3 检查配置结果....................................................................................................................................2-43 2.11 配置LDP GR..............................................................................................................................................2-44 2.11.1 建立配置任务....................................................................................................................................2-44 2.11.2 使能LDP GR 能力............................................................................................................................2-45 2.11.3 (可选)配置GR Restarter 的定时器.............................................................................................2-45 2.11.4 (可选)配置GR Helper 的定时器................................................................................................2-46 2.11.5 检查配置结果....................................................................................................................................2-46 2.12 维护MPLS LDP.........................................................................................................................................2-47 2.12.1 重启LDP...........................................................................................................................................2-47 2.12.2 清除MPLS 的统计信息...................................................................................................................2-48 2.12.3 检测LSP 连通性/可达性..................................................................................................................2-48 2.12.4 配置LDP LSP 的Trap 功能.............................................................................................................2-49 2.12.5 调试MPLS........................................................................................................................................2-49 2.13 配置举例.....................................................................................................................................................2-50 2.13.1 配置本地LDP 会话示例..................................................................................................................2-51 2.13.2 配置远端LDP 会话示例..................................................................................................................2-54 2.13.3 使用LDP 建立LSP 示例.................................................................................................................2-58 2.13.4 配置Transit LSP 示例(使用前缀列表).......................................................................................2-61 2.13.5 配置静态BFD 检测LDP LSP 示例.................................................................................................2-67 2.13.6 配置动态BFD 检测LDP LSP 示例.................................................................................................2-73 2.13.7 配置Manual LDP FRR 示例.............................................................................................................2-77 2.13.8 配置LDP Auto FRR 示例.................................................................................................................2-82 2.13.9 配置LDP 和IGP 同步示例..............................................................................................................2-91 2.13.10 配置LDP GTSM 示例....................................................................................................................2-97 2.13.11 配置LDP GR 示例........................................................................................................................2-100 3 MPLS TE 配置.............................................................................................................................3-1 3.1 MPLS TE 配置简介........................................................................................................................................3-3 3.1.1 MPLS TE 概述.......................................................................................................................................3-3 3.1.2 NE80E/40E 支持的MPLS TE 特性.....................................................................................................3-3 3.2 配置静态CR-LSP..........................................................................................................................................3-5 3.2.1 建立配置任务........................................................................................................................................3-6 3.2.2 使能MPLS TE.......................................................................................................................................3-7 3.2.3 (可选)配置链路的带宽....................................................................................................................3-7 3.2.4 配置MPLS TE 隧道接口......................................................................................................................3-8 3.2.5 配置静态CR-LSP 的入节点................................................................................................................3-9 3.2.6 配置静态CR-LSP 的中间节点............................................................................................................3-9 3.2.7 配置静态CR-LSP 的出节点..............................................................................................................3-10 3.2.8 检查配置结果......................................................................................................................................3-10 3.3 配置RSVP-TE 隧道.....................................................................................................................................3-11 3.3.1 建立配置任务......................................................................................................................................3-11 3.3.2 使能MPLS TE 和RSVP-TE..............................................................................................................3-12 3.3.3 (可选)配置链路的带宽..................................................................................................................3-13 3.3.4 配置OSPF TE.....................................................................................................................................3-14 3.3.5 配置IS-IS TE.......................................................................................................................................3-14 3.3.6 (可选)配置MPLS TE 显式路径....................................................................................................3-15 3.3.7 配置MPLS TE 隧道接口....................................................................................................................3-16 3.3.8 配置MPLS TE 隧道的约束条件........................................................................................................3-17 3.3.9 (可选)配置RSVP 资源预留风格..................................................................................................3-17 3.3.10 配置CSPF..........................................................................................................................................3-18 3.3.11 检查配置结果....................................................................................................................................3-18 3.4 引用CR-LSP 属性模板建立CR-LSP.........................................................................................................3-20 3.4.1 建立配置任务......................................................................................................................................3-20 3.4.2 配置CR-LSP 属性模板......................................................................................................................3-21 3.4.3 引用CR-LSP 属性模板建立CR-LSP................................................................................................3-23 3.4.4 检查配置结果......................................................................................................................................3-24 3.5 调整RSVP 信令参数...................................................................................................................................3-24 3.5.1 建立配置任务......................................................................................................................................3-25 3.5.2 配置RSVP 的Hello 扩展...................................................................................................................3-26 3.5.3 配置RSVP 的状态定时器..................................................................................................................3-26 3.5.4 配置RSVP-TE 摘要刷新....................................................................................................................3-27 3.5.5 配置RSVP-TE 预留确认....................................................................................................................3-27 3.5.6 检查配置结果......................................................................................................................................3-28 3.6 配置RSVP 认证...........................................................................................................................................3-28 3.6.1 建立配置任务......................................................................................................................................3-29 3.6.2 配置RSVP 密钥验证..........................................................................................................................3-30 3.6.3 (可选)配置RSVP 认证生存时间..................................................................................................3-31 3.6.4 (可选)配置handshake 功能...........................................................................................................3-31 3.6.5 (可选)配置message window 功能................................................................................................3-32 3.6.6 检查配置结果......................................................................................................................................3-33 3.7 调整CR-LSP 的路径选择...........................................................................................................................3-33 3.7.1 建立配置任务......................................................................................................................................3-34 3.7.2 配置管理组和亲和属性......................................................................................................................3-35 3.7.3 配置SRLG...........................................................................................................................................3-36 3.7.4 配置CR-LSP 的跳数限制值..............................................................................................................3-37 3.7.5 配置选路使用的度量..........................................................................................................................3-37 3.7.6 配置CSPF 的仲裁方法.......................................................................................................................3-38 3.7.7 配置失效链路定时器..........................................................................................................................3-38 3.7.8 配置环路检测......................................................................................................................................3-39 3.7.9 配置路由锁定......................................................................................................................................3-40 3.7.10 检查配置结果....................................................................................................................................3-40 3.8 调整MPLS TE 隧道的建立.........................................................................................................................3-41 3.8.1 建立配置任务......................................................................................................................................3-41 3.8.2 配置隧道的优先级..............................................................................................................................3-42 3.8.3 配置CR-LSP 重优化..........................................................................................................................3-42 3.8.4 配置隧道重建......................................................................................................................................3-43 3.8.5 配置记录路由和标签..........................................................................................................................3-43 3.8.6 配置RSVP 信令延迟触发功能..........................................................................................................3-44 3.8.7 检查配置结果......................................................................................................................................3-44 3.9 调整流量的转发...........................................................................................................................................3-45 3.9.1 建立配置任务......................................................................................................................................3-45 3.9.2 配置IGP Shortcut................................................................................................................................3-46 3.9.3 配置转发邻接......................................................................................................................................3-47 3.9.4 配置切换延迟时间和删除延迟时间..................................................................................................3-47 3.10 调整带宽的泛洪阈值.................................................................................................................................3-48 3.10.1 建立配置任务....................................................................................................................................3-48 3.10.2 配置带宽的泛洪阈值........................................................................................................................3-49 3.11 配置隧道自动带宽调整.............................................................................................................................3-49 3.11.1 建立配置任务....................................................................................................................................3-50 3.11.2 配置自动带宽调整............................................................................................................................3-50 3.11.3 检查配置结果....................................................................................................................................3-51 3.12 配置TE 流量限速......................................................................................................................................3-52 3.12.1 建立配置任务....................................................................................................................................3-52 3.12.2 配置TE 流量限速.............................................................................................................................3-53 3.12.3 检查配置结果....................................................................................................................................3-53 3.13 配置DS-TE.................................................................................................................................................3-54 3.13.1 建立配置任务....................................................................................................................................3-54 3.13.2 配置DS-TE 模式...............................................................................................................................3-56 3.13.3 配置DS-TE 带宽约束模型...............................................................................................................3-57 3.13.4 (可选)配置TE-Class 映射表.......................................................................................................3-57 3.13.5 配置链路带宽....................................................................................................................................3-59 3.13.6 配置Tunnel 接口...............................................................................................................................3-60 3.13.7 配置静态CR-LSP 并指定带宽........................................................................................................3-61 3.13.8 配置RSVP CR-LSP 并指定带宽.....................................................................................................3-62 3.13.9 配置CT 与流队列的映射关系.........................................................................................................3-63 3.13.10 (可选)配置端口类队列..............................................................................................................3-64 3.13.11 检查配置结果..................................................................................................................................3-65 3.14 配置MPLS TE FRR...................................................................................................................................3-66 3.14.1 建立配置任务....................................................................................................................................3-66 3.14.2 使能TE FRR.....................................................................................................................................3-68 3.14.3 配置Bypass Tunnel...........................................................................................................................3-68 3.14.4 (可选)配置TE FRR 扫描定时器................................................................................................3-70 3.14.5 (可选)修改PSB 和RSB 的超时倍数.........................................................................................3-70 3.14.6 检查配置结果....................................................................................................................................3-71 3.15 配置MPLS TE Auto FRR..........................................................................................................................3-71 3.15.1 建立配置任务....................................................................................................................................3-72 3.15.2 使能TE Auto FRR............................................................................................................................3-72 3.15.3 使能TE FRR 并配置自动旁路隧道的属性....................................................................................3-73 3.15.4 (可选)配置TE FRR 扫描定时器................................................................................................3-74 3.15.5 (可选)修改PSB 和RSB 的超时倍数.........................................................................................3-74 3.15.6 检查配置结果....................................................................................................................................3-74 3.16 配置CR-LSP 备份.....................................................................................................................................3-75 3.16.1 建立配置任务....................................................................................................................................3-75 3.16.2 配置CR-LSP 备份............................................................................................................................3-76 3.16.3 (可选)配置逃生路径....................................................................................................................3-77 3.16.4 检查配置结果....................................................................................................................................3-78 3.17 配置旁路保护隧道与备份CR-LSP 同步.................................................................................................3-79 3.17.1 建立配置任务....................................................................................................................................3-80 3.17.2 使能旁路保护隧道与备份CR-LSP 同步........................................................................................3-81 3.17.3 检查配置结果....................................................................................................................................3-81 3.18 配置RSVP GR...........................................................................................................................................3-81 3.18.1 建立配置任务....................................................................................................................................3-82 3.18.2 使能RSVP Hello 扩展......................................................................................................................3-83 3.18.3 使能RSVP Full-GR...........................................................................................................................3-83 3.18.4 (可选)使能RSVP GR 支持能力.................................................................................................3-84 3.18.5 (可选)配置RSVP GR 节点间hello 会话...................................................................................3-84 3.18.6 (可选)修改基础时间....................................................................................................................3-85 3.18.7 检查配置结果....................................................................................................................................3-85 3.19 配置静态BFD for CR-LSP........................................................................................................................3-86 3.19.1 建立配置任务....................................................................................................................................3-86 3.19.2 使能全局BFD 能力..........................................................................................................................3-87 3.19.3 配置入节点BFD 参数......................................................................................................................3-88 3.19.4 配置出节点BFD 参数......................................................................................................................3-89 3.19.5 检查配置结果....................................................................................................................................3-89 3.20 配置静态BFD for TE.................................................................................................................................3-91 3.20.1 建立配置任务....................................................................................................................................3-91 3.20.2 使能全局BFD 能力..........................................................................................................................3-92 3.20.3 配置入节点BFD 参数......................................................................................................................3-92 3.20.4 配置出节点BFD 参数......................................................................................................................3-93 3.20.5 检查配置结果....................................................................................................................................3-94 3.21 配置动态BFD for CR-LSP........................................................................................................................3-95 3.21.1 建立配置任务....................................................................................................................................3-96 3.21.2 全局使能BFD...................................................................................................................................3-97 3.21.3 入节点上使能TE 动态创建BFD 会话...........................................................................................3-97 3.21.4 出节点使能被动创建BFD 会话......................................................................................................3-98 3.21.5 (可选)调整入节点的BFD 检测参数..........................................................................................3-98 3.21.6 检查配置结果....................................................................................................................................3-99 3.22 配置动态BFD for RSVP.........................................................................................................................3-100 3.22.1 建立配置任务..................................................................................................................................3-100 3.22.2 RSVP 两端全局使能BFD..............................................................................................................3-101 3.22.3 RSVP 两端使能BFD for RSVP.....................................................................................................3-101 3.22.4 (可选)调整BFD 检测参数........................................................................................................3-102 3.22.5 检查配置结果..................................................................................................................................3-103 3.23 配置LDP over TE....................................................................................................................................3-104 3.23.1 建立配置任务..................................................................................................................................3-104 3.23.2 配置转发邻接..................................................................................................................................3-105 3.23.3 TE 隧道两端建立LDP 远端对等体..............................................................................................3-105 3.23.4 (可选)配置触发建立LSP 的策略.............................................................................................3-106 3.23.5 检查配置结果..................................................................................................................................3-106 3.24 维护MPLS TE..........................................................................................................................................3-106 3.24.1 检测TE 隧道的连通性...................................................................................................................3-107 3.24.2 使用NQA 检测TE 隧道................................................................................................................3-108 3.24.3 查看隧道错误信息..........................................................................................................................3-108 3.24.4 清除运行信息..................................................................................................................................3-108 3.24.5 重启隧道接口..................................................................................................................................3-109 3.24.6 重启RSVP 进程..............................................................................................................................3-109 3.24.7 删除/重建自动生成的旁路隧道.....................................................................................................3-109 3.24.8 配置LDP LSP 的Trap 功能...........................................................................................................3-110 3.24.9 调试MPLS TE.................................................................................................................................3-110 3.25 配置举例...................................................................................................................................................3-111 3.25.1 配置静态MPLS TE 隧道示例........................................................................................................3-113 3.25.2 配置RSVP-TE 隧道示例................................................................................................................3-119 3.25.3 引用CR-LSP 属性模板建立CR-LSP 示例...................................................................................3-126 3.25.4 配置RSVP 认证示例......................................................................................................................3-135 3.25.5 配置MPLS TE 隧道属性示例........................................................................................................3-140 3.25.6 配置SRLG 示例(TE Auto FRR)...............................................................................................3-152 3.25.7 配置SRLG 示例(Hot-standby)..................................................................................................3-160 3.25.8 配置TE 隧道流量限速示例...........................................................................................................3-167 3.25.9 配置Non-IETF 模式的DS-TE 示例(MAM 模型)...................................................................3-171 3.25.10 配置IETF 模式的DS-TE 示例(RDM 模型)..........................................................................3-186 3.25.11 配置DS-TE 从Non-IETF 模式切换到IETF 模式示例.............................................................3-205 3.25.12 配置MPLS TE FRR 示例.............................................................................................................3-212 3.25.13 配置MPLS TE Auto FRR 示例....................................................................................................3-223 3.25.14 配置RSVP 认证示例(TE FRR)..............................................................................................3-230 3.25.15 配置RSVP-TE 摘要刷新示例(TE FRR)................................................................................3-237 3.25.16 配置FRR 拔板保护示例..............................................................................................................3-244 3.25.17 配置CR-LSP 热备份示例............................................................................................................3-253 3.25.18 配置旁路保护隧道与备份CR-LSP 同步示例............................................................................3-261 3.25.19 配置RSVP GR 示例.....................................................................................................................3-269 3.25.20 配置静态BFD for CR-LSP 示例..................................................................................................3-276 3.25.21 配置静态BFD for TE 示例...........................................................................................................3-282 3.25.22 配置动态BFD for CR-LSP 示例..................................................................................................3-290 3.25.23 配置动态BFD for RSVP 示例.....................................................................................................3-295 3.25.24 配置LDP over TE 示例................................................................................................................3-304 3.25.25 配置OSPF 多区域发布MPLS LSR-ID 示例..............................................................................3-314 3.25.26 配置区域间隧道示例....................................................................................................................3-318 4 MPLS 公共配置...........................................................................................................................4-1 4.1 MPLS 公共配置简介.....................................................................................................................................4-2 4.1.1 MPLS 公共特性概述............................................................................................................................4-2 4.1.2 NE80E/40E 支持的MPLS 公共特性...................................................................................................4-2 4.2 配置MPLS TTL 的处理模式........................................................................................................................4-2 4.2.1 建立配置任务........................................................................................................................................4-3 4.2.2 配置MPLS Uniform 模式.....................................................................................................................4-4 4.2.3 配置MPLS Pipe 模式...........................................................................................................................4-4 4.2.4 配置ICMP 响应报文使用的路径........................................................................................................4-5 4.3 调整优化MPLS.............................................................................................................................................4-5 4.3.1 建立配置任务........................................................................................................................................4-5 4.3.2 配置PHP 特性.......................................................................................................................................4-6 4.3.3 配置接口的MPLS MTU.......................................................................................................................4-7 4.3.4 配置MPLS 统计信息上报的时间间隔...............................................................................................4-7 4.3.5 检查配置结果........................................................................................................................................4-7 4.4 维护MPLS 公共配置....................................................................................................................................4-8 4.4.1 清除MPLS 的统计信息.......................................................................................................................4-8 4.4.2 检测LSP 连通性/可达性......................................................................................................................4-8 4.4.3 调试MPLS............................................................................................................................................4-9 5 MPLS OAM 配置........................................................................................................................5-1 5.1 MPLS OAM 配置简介...................................................................................................................................5-2 5.1.1 MPLS OAM 概述..................................................................................................................................5-2 5.1.2 NE80E/40E 支持的MPLS OAM 特性.................................................................................................5-2 5.2 配置MPLS OAM 基本检测功能..................................................................................................................5-5 5.2.1 建立配置任务........................................................................................................................................5-5 5.2.2 配置入节点OAM 功能.........................................................................................................................5-6 5.2.3 配置出节点OAM 功能.........................................................................................................................5-7 5.2.4 检查配置结果........................................................................................................................................5-8 5.3 配置MPLS OAM 保护倒换功能..................................................................................................................5-9 5.3.1 建立配置任务........................................................................................................................................5-9 5.3.2 创建Tunnel 保护组.............................................................................................................................5-11 5.3.3 (可选)配置保护倒换触发机制......................................................................................................5-12 5.3.4 (可选)使能MPLS OAM 检测双向LSP.......................................................................................5-12 5.3.5 检查配置结果......................................................................................................................................5-13 5.4 维护MPLS OAM.........................................................................................................................................5-13 5.4.1 监控MPLS OAM 的运行状况...........................................................................................................5-13 5.4.2 监控隧道保护组的运行状况..............................................................................................................5-14 5.4.3 调试Tunnel 保护组.............................................................................................................................5-14 5.4.4 调试MPLS OAM................................................................................................................................5-15 5.5 配置举例.......................................................................................................................................................5-15 5.5.1 配置MPLS OAM 检测静态LSP 连通性示例..................................................................................5-15 5.5.2 配置MPLS OAM 保护倒换示例.......................................................................................................5-23 A 术语..............................................................................................................................................A-1 B 缩略语..........................................................................................................................................B-1
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