文章给出Juniper EX交换机常用命令：
#set system host-name HuanGong3cengHuiJu /#设置主机名#/
#set chassis alarm management-ethernet link-down ignore /#设置MTG端口产生告警忽略#/
#set system time-zone Asia/Shanghai /#设置所在时区#/
# set system root-authentication plain-text-password /#设置root密码#/
New password:
Retype new password:
# set system login user admin class super-user authentication plain-text-password /#设置用户名admin,权限为超级用户，并设置密码#/
New password:
Retype new password:
#set system services ssh protocol-version v2 /#开启远程 ssh登陆,并指定版本为v2版本#/
#set system services telnet /#开启远程 telnet登陆#/
#set interfaces ge-0/0/0 unit 0 family ethernet-switching port-mode access /#设置端口模式为access#/
#set interfaces ge-0/0/0 unit 0 family ethernet-switching vlan members vlan5 /#设置端口所属VLAN 为vlan5 #/
#set interfaces ge-0/1/3 unit 0 family ethernet-switching port-mode trunk /#设置端口模式为trunk#/
#set interfaces ge-0/1/3 unit 0 family ethernet-switching vlan members all /#设置此端口允许通过的VLAN是所有VLAN#/
#set vlans vlan2 vlan-id 2 description manage_vlan /#设置VLAN 名字为 "vlan2" vlan-id 为 2 并加vlan描述为"manage_vlan"#/
#set vlans vlan2 l3-interface vlan.2 /#将vlan2 绑定三层接口vlan.2#/
#set interfaces vlan unit 2 family inet address 219.226.127.33/25 /#设置vlan2 的三层接口地址#/
#set routing-options static route 0.0.0.0/0 next-hop 219.226.127.1 /#设置默认路由#/
#set snmp community ex-public authorization read-only /#"设置只读 community串为 ex-public" /
#set poe interface all disable /#关掉所有poe接口供电#/