JunOS Switch VLANs and Trunk Ports

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In this section, we will discuss. How to configure VLANs, Access Port and Trunk ports in Juniper Switches.
For this JunOS Switch VLANs and Trunk Ports configuration, I am using Real Juniper Switch EX2200.
  • Create the following VLANs and configure the correct names:
  • VLAN 10: name Managment.
  • VLAN 20: name Admin.
  • VLAN 30: name IT.
  • VLAN 40: name Accounts.
  • Configure Ge-0/0/0 as an access interface in VLAN 10.
  • Configure Ge-0/0/1 as an access interface in VLAN 20.
  • Configure Ge-0/0/22 as a Trunk interface for all VLANs in once.
  • Configure Ge-0/0/23 as a Trunk interface for  VLAN 10,20,40.

Configuration of VLANs

root@SW1#set vlans <vlan-name>  vlan-id <vlan-no>
root@SW1#set vlans MANAGEMENT vlan-id 10
root@SW1#set vlans ADMIN vlan-id 20
root@SW1#set vlans IT vlan-id 30
root@SW1#set vlans ACCOUNTS vlan-id 40

Configuration of Access Ports

root@SW1#set interfaces <interface-name> unit 0 family ethernet-switching port-mode <port-mode>(ex- access or trunk)
root@SW1#set interfaces <interface-name> unit 0 family ethernet-switching vlan members <vlan-name>
root@SW1#set interfaces ge-0/0/0 unit 0 family ethernet-switching port-mode access
root@SW1#set interfaces ge-0/0/0 unit 0 family ethernet-switching vlan members MANAGEMENT
root@SW1#set interfaces ge-0/0/1 unit 0 family ethernet-switching port-mode access
root@SW1#set interfaces ge-0/0/1 unit 0 family ethernet-switching vlan members ADMIN

Configuration of Trunk Ports

root@SW1#set interfaces <interface-name> unit 0 family ethernet-switching port-mode  <port-mode>(ex- access or trunk)
root@SW1#set interfaces <interface-name> unit 0 family ethernet-switching vlan members all
This is for allow all VLANs in once.
root@SW1#set interfaces ge-0/0/22 unit 0 family ethernet-switching port-mode trunk
root@SW1#set interfaces ge-0/0/22 unit 0 family ethernet-switching vlan members all
Another Way is Allow specific VLANs .
root@SW1#set interfaces ge-0/0/23 unit 0 family ethernet-switching port-mode trunk
root@SW1#set interfaces ge-0/0/23 unit 0 family ethernet-switching vlan members [MANAGEMENT ADMIN  ACCOUNTS]

Verification Commands

root@SW1>show vlan ( For Verify VLAN and VLAN Member Ports)
sureshthapa@AC7_WFH> show ethernet-switching interfaces detail | match trunk (Verify Trunk Ports)
Interface: ge-0/0/22.0, Index: 66, State: up, Port mode: Trunk
Interface: ge-0/1/23.0, Index: 114, State: up, Port mode: Trunk

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