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JuniperEX系列交换机

命令行配置手册

目 录

第一章 交换机基础知识....................................................................................................................................... 7 1.1 认识JUNIPER交换机 ......................................................................................................................................... 7 1.2 JUNOS操作系统基础......................................................................................................................................... 9

1.2.1 交换机配置模式 ........................................................................................................................................ 9 1.2.2 交换机配置结构 ...................................................................................................................................... 10 1.2.3 TAB和空格键的使用 ............................................................................................................................. 15 1.2.4 用户模式和配置模式show的区别 ...................................................................................................... 16 1.2.5 如何将配置转换成set命令................................................................................................................... 19 1.2.6 commit和rollback .............................................................................................................................. 20

1.3 EX交换机命令菜单结构 ................................................................................................................................. 22 第二章 操作指导 ................................................................................................................................................ 35 2.1通过CONSOLE线连接交换机 ......................................................................................................................... 35 2.2 SYSTEM系统参数配置 .................................................................................................................................... 36

2.2.1设置root密码 ........................................................................................................................................ 37 2.2.2设置主机名 .............................................................................................................................................. 37 2.2.3设置DNS服务器 .................................................................................................................................... 37 2.2.4设置日期时间 .......................................................................................................................................... 37 2.2.5设置NTP服务器 .................................................................................................................................... 38 2.2.6开启远程Telnet登陆服务 .................................................................................................................... 38 2.2.7开启远程Ftp服务 .................................................................................................................................. 39 2.2.8开启远程ssh登陆 .................................................................................................................................. 39 2.2.9开启远程http登陆服务 ........................................................................................................................ 39 2.2.10添加/删除用户 ...................................................................................................................................... 40

2.2.10.1添加用户 .......................................................................................................................................................... 40 2.2.10.2修改用户类别................................................................................................................................................... 40 2.2.10.3 修改用户密码 .................................................................................................................................................. 40

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2.2.10.4删除用户 .......................................................................................................................................................... 41

2.2.11用户权限设置 ........................................................................................................................................ 41

2.3 VLAN配置 ..................................................................................................................................................... 43

2.3.1 VLAN配置步骤 .................................................................................................................................... 43 2.3.2 VLAN配置规范要求 ........................................................................................................................... 44 2.3.3 添加VLAN ........................................................................................................................................... 44 2.3.4 修改端口VLAN .................................................................................................................................... 46 2.3.5 删除VLAN ............................................................................................................................................ 46 2.3.6 配置VLAN网关IP ............................................................................................................................... 47

2.4 TRUNK配置 ..................................................................................................................................................... 47

2.4.1 Trunk配置步骤 ..................................................................................................................................... 47 2.4.2如何设置Trunk ...................................................................................................................................... 48 2.4.3允许/禁止VLAN通过Trunk ................................................................................................................ 48

2.5端口配置 .......................................................................................................................................................... 48

2.5.1端口配置规范要求 .................................................................................................................................. 48 2.5.2修改端口速率 .......................................................................................................................................... 49 2.5.3修改端口工作模式 .................................................................................................................................. 49 2.5.4修改端口为L3模式 ................................................................................................................................ 49 2.5.5 修改端口为L2模式 ................................................................................................................................ 50

2.6生成树配置 ...................................................................................................................................................... 50

2.6.1 RSTP协议概览 ...................................................................................................................................... 50 2.6.2 MSTP协议概览 ..................................................................................................................................... 53 2.6.3 STP配置实例（生成树） ..................................................................................................................... 54 2.6.4 RSTP配置实例（快速生成树） .......................................................................................................... 55 2.6.5 MSTP配置 实例（多生成树协议） .................................................................................................... 61

2.7 端口捆绑 ......................................................................................................................................................... 66

2.7.1 端口捆绑步骤 ......................................................................................................................................... 66

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2.7.2 L2端口捆绑 ........................................................................................................................................... 67 2.7.3 L3端口捆绑 ........................................................................................................................................... 68

2.8 ECMP负载均衡配置 .................................................................................................................................... 68 2.9 路由协议配置 .................................................................................................................................................. 70

2.9.1 静态路由配置 ........................................................................................................................................ 70

2.9.1.1添加静态路由 ..................................................................................................................................................... 70 2.9.1.2 删除静态路由 ..................................................................................................................................................... 70 2.9.1.3调整静态路由优先值 ......................................................................................................................................... 70 2.9.1.4设置备份静态路由 ............................................................................................................................................. 70 2.9.1.5指定静态路由下一跳端口 ................................................................................................................................. 71

2.9.2 OSPF配置 ............................................................................................................................................ 71 2.9.2.1 OSPF配置步骤 .................................................................................................................................. 71 2.9.2.2 OSPF配置实例（单区域） ............................................................................................................... 75 2.9.2.3 OSPF路由过滤 .................................................................................................................................. 78

2.10 端口镜像 ...................................................................................................................................................... 79

2.10.1 端口镜像的概述................................................................................................................................... 79 2.10.2 端口镜像的目的................................................................................................................................... 80 2.10.3 端口镜像的功能................................................................................................................................... 80 2.10.4 端口镜像工作原理............................................................................................................................... 80 2.10.5 端口输入输出流量镜像 ....................................................................................................................... 82 2.10.6 带过滤条件的端口镜像 ....................................................................................................................... 83

2.11端口MAC地址限制 ..................................................................................................................................... 85 2.12端口广播风暴控制 ........................................................................................................................................ 85 2.13 VRRP 虚拟路由冗余协议 ............................................................................................................................ 86

2.13.1 VRRP概览 ........................................................................................................................................... 86 2.13.2 VRRP工作原理 ................................................................................................................................... 87 2.13.3 如何配置VRRP ................................................................................................................................... 88

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2.13.4 如何检查VRRP状态 ........................................................................................................................... 90 2.13.5 如何切换VRRP ................................................................................................................................... 92

2.14

BFD配置 （双向转发检测） ................................................................................................................. 92

2.14.1 BFD概览 .............................................................................................................................................. 92 2.14.2 BFD介绍 .............................................................................................................................................. 93 2.14.3 BFD的报文格式 .................................................................................................................................. 93 2.14.4 2.14.5 2.14.6 2.14.7 2.14.8 2.14.9

检测模式 ......................................................................................................................................... 95 发送周期及检测时间 ..................................................................................................................... 96 参数修改 ......................................................................................................................................... 96 会话建立 ......................................................................................................................................... 97 BFD的标准化 .............................................................................................................................. 100 OSPF中配置BFD ....................................................................................................................... 100

2.14.10静态路由中配置BFD ....................................................................................................................... 101

2.15

交换机FIREWALL限制功能 ................................................................................................................... 101

2.15.1 2.15.2

2.16

限制IP地址 ................................................................................................................................. 102 限制MAC地址 ............................................................................................................................ 102

VIRTUAL-CHASSIS设置 .......................................................................................................................... 103

2.16.1 2.16.2 2.16.3 2.16.4 2.16.5

2.17

VC知识......................................................................................................................................... 103 如何建立VC组 ............................................................................................................................ 104 如何扩充VC组交换机 ................................................................................................................ 106 如何利用uplink链路组成VC ................................................................................................... 107 如何对VC组进行切换 ................................................................................................................ 110

SNMP配置 ............................................................................................................................................ 110

2.17.1 2.17.2 2.17.3

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SNMP协议概览 .......................................................................................................................... 110 SNMP基本简介 .......................................................................................................................... 110 配置SNMP .................................................................................................................................. 111

SYSLOG配置 ........................................................................................................................................... 113

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