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MikroTik MTCIPv6E lab 6 of 8

PPPoE with IPv6: per-session prefixes and delegation

Fernvale's broadband customers connect with PPPoE. Make the access concentrator dual-stack: an IPv4 address from a pool, a /64 for the PPP link and a /56 delegated over DHCPv6 for every session, all from one PPP profile. Connect two customer routers, number a LAN from the delegated prefix, and see what the concentrator creates for each session.

Run this lab

It needs Lite: its 4 nodes are set to 4 vCPU and 1,280 MB in total. That fits the free demo too.

In your workspace: Shared, then MikroTik MTCIPv6E RouterOS v7 guided labs, then 06 - PPPoE with IPv6 - per-session prefixes and delegation

Try it free for 30 minutesRun it on Lite from £3 a day

The free demo needs no card and no email. Every lab plan includes every guided lab.

Level
Intermediate
Time
About 60 minutes
Nodes need
4 vCPU, 1,280 MB
Smallest plan
Lite

The scenario

Fernvale's broadband customers connect to the BRAS (broadband remote access server) with PPPoE. Until now they got IPv4 only. Make every session dual-stack from one PPP profile:

  • an IPv4 address from 100.64.0.0/24 (shared address space, as carriers use);
  • a /64 for the PPP link itself, from 2001:db8:5000::/48;
  • a /56 delegated over DHCPv6 for the customer's LANs, from 2001:db8:5100::/40.
DeviceInterfaceNotes
BRASether2 (access network) · internetPPPoE server; 198.18.0.1 and 2001:db8:ffff::1 stand for the Internet
CPE1ether1 (PPPoE as cust1) · ether2 (LAN, PC1)customer router
CPE2ether1 (PPPoE as cust2)a second customer
PC1 (Linux)eth0SLAAC

What you’ll practise

  • Explain how IPv6 runs over PPP: IPv6CP, link-local identifiers, and DHCPv6 over the session
  • Configure a PPP profile with remote-ipv6-prefix-pool and dhcpv6-pd-pool
  • Request a delegated prefix over a PPPoE client interface and number a LAN from it
  • Read the dynamic DHCPv6 server, bindings and routes RouterOS creates per session

The tasks

  1. IPv6 over PPP
  2. Pools and profile on the BRAS
  3. Connect the customers
  4. The customer's LAN

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 PPPoE with IPv6 - per-session prefixes and delegation4 nodes and 1 network, 4 links. Every link is listed as text below the diagram.BRASCPE1CPE2PC1Accessether2ether1ether1ether2eth0
4 nodes and 1 network, with the interface names each link uses. On a narrow screen, scroll the diagram sideways.
Every link, as text
  • BRAS ether2 to Access (network)
  • CPE1 ether1 to Access (network)
  • CPE2 ether1 to Access (network)
  • CPE1 ether2 to PC1 eth0
Nodes in PPPoE with IPv6: per-session prefixes and delegation, with the image each runs and the vCPU and RAM it’s set to
NodeDeviceImage in Add NodeSet to
BRASMikroTik RouterOSmikrotik-7.14.21 vCPU, 256 MB
CPE1MikroTik RouterOSmikrotik-7.14.21 vCPU, 256 MB
CPE2MikroTik RouterOSmikrotik-7.14.21 vCPU, 256 MB
PC1Alpine 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 MikroTik MTCIPv6E RouterOS v7 guided labs.

  3. Open 06 - PPPoE with IPv6 - per-session prefixes and delegation 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.

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CloudLabBox is independent of MikroTik. The lab follows exam topics and isn’t vendor training material; vendor names identify the exams and the images in the workspace.