CloudLabBox
Try the free demo

VXLAN EVPN lab 5 of 14

Multihoming with EVPN ESI-LAG and MLAG

Dual-home a server with an EVPN Ethernet segment on Cumulus and another with MLAG on vEOS, compare them from across the fabric, and fail a link on each.

Run this lab

It needs Standard: its 7 nodes are set to 7 vCPU and 11,264 MB in total.

In your workspace: Shared, then VXLAN EVPN fabrics guided labs, then 05 - Multihoming with EVPN ESI-LAG and MLAG

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 7 vCPU and 11,264 MB together. Every lab plan includes every guided lab.

Level
Advanced
Time
About 90 minutes
Nodes need
7 vCPU, 11,264 MB
Smallest plan
Standard

The scenario

Calder Freight's order-processing servers have two NICs each, and a server must survive losing a leaf. Rack A's Cumulus leaves will use EVPN multihoming. Rack B's Arista leaves will use MLAG, the older approach, because a supplier's design document insists on it. You'll build both, and compare them from the other side of the fabric.

ItemRack ARack B
Leavesleaf1 (AS 65001, 10.255.0.11), leaf2 (AS 65002, 10.255.0.12): Cumulusleaf3 (AS 65003, 10.255.0.13), leaf4 (AS 65004, 10.255.0.14): vEOS
Hosth1, 10.10.10.11/24, LACP bond on swp3 of each leafh2, 10.10.10.12/24, LACP bond on Ethernet4 of each leaf
RedundancyESI 03:44:38:39:be:ef:aa:00:00:01, local-id 1MLAG domain POD2, peer link Port-Channel10 (Ethernet5 and 6), MLAG 20
VTEPEach leaf keeps its own loopbackShared Loopback1 10.255.1.34
Peer link addressesnone neededleaf3 10.255.255.1/30, leaf4 10.255.255.2/30 on Vlan4094

VLAN 10 is VNI 10010 with route target 65000:10010 everywhere.

What you’ll practise

  • Build an all-active EVPN Ethernet segment with LACP
  • Read the designated forwarder election and type 1 and type 4 routes
  • Build an MLAG pair with a shared VTEP
  • Compare aliasing with a shared VTEP

The tasks

  1. Start the lab
  2. Build the Ethernet segment on rack A
  3. Read the election and the split-horizon rules
  4. Build the MLAG pair on rack B
  5. Compare them from the far side
  6. Fail a link on each side

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 Multihoming with EVPN ESI-LAG and MLAG7 nodes, 10 links. Every link is listed as text below the diagram.spine1leaf1leaf2leaf3leaf4h1h2Ethernet5Ethernet5Ethernet6Ethernet6Ethernet2swp1Ethernet3Ethernet1swp3eth0swp3eth1Ethernet4eth0Ethernet4eth1Ethernet1swp1Ethernet4Ethernet1
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 Ethernet2 to leaf2 swp1
  • spine1 Ethernet3 to leaf3 Ethernet1
  • spine1 Ethernet4 to leaf4 Ethernet1
  • leaf1 swp3 to h1 eth0
  • leaf2 swp3 to h1 eth1
  • leaf3 Ethernet4 to h2 eth0
  • leaf4 Ethernet4 to h2 eth1
  • leaf3 Ethernet5 to leaf4 Ethernet5
  • leaf3 Ethernet6 to leaf4 Ethernet6
Nodes in Multihoming with EVPN ESI-LAG and MLAG, 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
leaf2NVIDIA Cumulus VXcumulus-vx-5.9.11 vCPU, 2,048 MB
leaf3Arista vEOSveos-4.33.1.1F1 vCPU, 2,048 MB
leaf4Arista vEOSveos-4.33.1.1F1 vCPU, 2,048 MB
h1Alpine Linuxclbalpinebase-alpine-base-3-20-31 vCPU, 512 MB
h2Alpine 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 05 - Multihoming with EVPN ESI-LAG and MLAG 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.