CloudLabBox
Try the free demo

VXLAN EVPN lab 10 of 14

Junos EVPN-VXLAN with edge-routed bridging

Add a Juniper vJunos-switch leaf to a Cumulus and Arista fabric: a loopback overlay session, a stretched VLAN and type 5 routing across three vendors.

Run this lab

It needs Standard: its 7 nodes are set to 10 vCPU and 12,800 MB in total.

In your workspace: Shared, then VXLAN EVPN fabrics guided labs, then 10 - Junos EVPN-VXLAN with edge-routed bridging

Run it on Standard from £5 a day

The free demo can’t run it: it has 6 vCPU and 8 GB, and this lab’s nodes need 10 vCPU and 12,800 MB together. Every lab plan includes every guided lab.

Level
Advanced
Time
About 90 minutes
Nodes need
10 vCPU, 12,800 MB
Smallest plan
Standard

The scenario

Calder Freight has bought a rack of Juniper switches, so a third vendor joins the fabric. You'll add leaf4, running Junos, to a working Cumulus and Arista fabric, using edge-routed bridging (ERB): each leaf is the gateway for its own hosts, which is what you've been building all along under the name symmetric IRB.

Junos differs from the others in one way that matters: it wants its EVPN session on the loopback.

NodeASLoopbackRole
spine1 (vEOS)6500010.255.0.1Spine
leaf1 (Cumulus)6500110.255.0.11VLAN 10, h1 10.10.10.11
leaf3 (vEOS)6500310.255.0.13VLAN 20, h3 10.20.20.13
leaf4 (vJunos-switch)6500410.255.0.14VLAN 10, h4 10.10.10.14 on ge-0/0/1
ItemValue
VLAN 10VNI 10010, RT 65000:10010, gateway 10.10.10.1/24
VLAN 20Local to leaf3, gateway 10.20.20.1/24
VRF REDL3 VNI 50001, RT 65000:50001
Anycast gateway MAC00:1c:73:00:00:01
leaf4 fabric linkge-0/0/0, 10.1.4.1/31

What you’ll practise

  • Explain why Junos runs EVPN on a loopback session
  • Configure VXLAN with switch-options and protocols evpn
  • Build an ERB gateway with IRB and a routing instance
  • Forward traffic across three vendors

The tasks

  1. Start the lab
  2. Move EVPN to a loopback session
  3. Add the layer 2 service
  4. Add routing

The Lab Tasks pane has the scenario, these tasks, the checks to run, hints and the full solution.

Topology and devices

The network as it opens in EVE-NG, drawn from the lab’s own canvas, and the image each node runs.

Topology of Junos EVPN-VXLAN with edge-routed bridging7 nodes, 6 links. Every link is listed as text below the diagram.spine1leaf1leaf3leaf4h1h3h4Ethernet3Ethernet1swp3eth0Ethernet3eth0ge-0/0/1eth0Ethernet1swp1Ethernet4ge-0/0/0
7 nodes, with the interface names each link uses. On a narrow screen, scroll the diagram sideways.
Every link, as text
  • spine1 Ethernet1 to leaf1 swp1
  • spine1 Ethernet3 to leaf3 Ethernet1
  • spine1 Ethernet4 to leaf4 ge-0/0/0
  • leaf1 swp3 to h1 eth0
  • leaf3 Ethernet3 to h3 eth0
  • leaf4 ge-0/0/1 to h4 eth0
Nodes in Junos EVPN-VXLAN with edge-routed bridging, with the image each runs and the vCPU and RAM it’s set to
NodeDeviceImage in Add NodeSet to
spine1Arista vEOSveos-4.33.1.1F1 vCPU, 2,048 MB
leaf1NVIDIA Cumulus VXcumulus-vx-5.9.11 vCPU, 2,048 MB
leaf3Arista vEOSveos-4.33.1.1F1 vCPU, 2,048 MB
leaf4Juniper vJunos-switchvjunosswitch-23.4R2-S2.14 vCPU, 5,120 MB
h1Alpine Linuxclbalpinebase-alpine-base-3-20-31 vCPU, 512 MB
h3Alpine Linuxclbalpinebase-alpine-base-3-20-31 vCPU, 512 MB
h4Alpine Linuxclbalpinebase-alpine-base-3-20-31 vCPU, 512 MB

How to open this lab

  1. Sign in to your workspace at lab.cloudlabbox.com.

  2. In File Manager, open Shared, then the folder VXLAN EVPN fabrics guided labs.

  3. Open 10 - Junos EVPN-VXLAN with edge-routed bridging and start its nodes, then open Lab Tasks for the scenario and the steps.

The lab is read-only. You can start the nodes and configure the devices, but changes to the topology can’t be saved. To change it, rebuild it in your own folder.

More VXLAN EVPN labs

All VXLAN EVPN labs

Related labs in other courses

CloudLabBox is independent of Arista Networks, Cisco, HPE, Juniper Networks and NVIDIA. The lab follows exam topics and isn’t vendor training material; vendor names identify the exams and the images in the workspace.