New Training: Configure Layer 2 Switching on Junos
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New Training: Configure Layer 2 Switching on Junos

In this 11-video skill, CBT Nuggets trainer Knox Hutchinson explores the ways that Junos devices can implement layer 2 switching in various settings. Watch this new training.

Learn with one of these courses:

This training includes:

  • 11 videos
  • 1.2 hours of training

You’ll learn these topics in this skill:

  • Intro Junos Switching
  • A Layer 2 Refresher
  • EX-Series: Create VLANs
  • EX-Series: Configure Access and Trunk Ports
  • EX-Series: Inter-VLAN Routing
  • EX-Series: Configure the Voice VLAN
  • MX: Configure VLANs
  • MX: Configure Access and Trunk Ports
  • MX: Inter-VLAN Routing
  • Now Do It With QFX-Series Switches
  • Summarizing Junos Switching

How To Create A Basic VLAN With A Jun EX Series Device

Segmenting business networks with VLANs is an important function for a network with the business environment. VLANs help separate networks into groupings of logical nodes as well as limit the amount of network traffic flowing across the entire LAN. If a network has more than 200 devices, uses a lot of broadcast traffic, or requires additional security measures, VLANs should be configured in that network environment.

Creating a new VLAN for Juno EX devices can be relatively straightforward with these steps:

  1. Apply a unique identifier to the VLAN
  2. Assign one or more port interfaces for that VLAN

Below is an example of creating a basic VLAN through the Juno command line:

set VLANs employee-clan
set vlans employee-vlan vlan-id 100
set interfaces ge-0/0/1 unit 0 family ethernet-switching vlan members employee-vlan
set interfaces ge-0/0/2 unit 0 family ethernet-switching vlan members employee-vlan
set interfaces ge-0/0/3 unit 0 family ethernet-switching vlan members employee-vlan

After interfaces are assigned to a VLAN, those interfaces will function in access mode. All interfaces in a VLAN will be under a single broadcast domain even if those interfaces are on different switches. Traffic can be assigned on any switch to a specific VLAN by referencing either the interface itself or the MAC addresses of the devices sending network traffic.

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