CloudLabBox
Try the free demo

CCNP ENARSI lab 19 of 35

BGP route reflectors and MP-BGP for IPv4 and IPv6

Replace an iBGP full mesh with a route reflector, run separate IPv4 and IPv6 address families over native sessions, and follow the originator ID and cluster list that keep reflected routes loop-free.

Run this lab

It needs Lite: its 5 nodes are set to 5 vCPU and 2,560 MB in total. That fits the free demo too.

In your workspace: Shared, then CCNP ENARSI 300-410 guided labs, then 19 - BGP route reflectors and MP-BGP for IPv4 and IPv6

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
Advanced
Time
About 80 minutes
Nodes need
5 vCPU, 2,560 MB
Smallest plan
Lite

The scenario

Ospreyline Retail (AS 64500) is growing from three sites to thirty. A full iBGP mesh would need n×(n−1)/2 sessions (435 for 30 routers), so the design uses the core router R1 as a route reflector and every other router as a client with a single session to R1. The network is dual-stack: IPv4 and IPv6 routes must both be carried, each in its own BGP address family over its own native session. R4 connects to the ISP (R5, AS 64501) over IPv4 and IPv6.

The OSPFv3 underlay (both address families) is already running, so every loopback is reachable.

DeviceInterfaceIPv4IPv6Role
R1Lo010.255.0.1/322001:db8:255::1/128route reflector
R2Lo0 / Lo110.255.0.2/32 / 10.2.2.1/242001:db8:255::2/128 / 2001:db8:2::1/64client, branch 2
R3Lo0 / Lo110.255.0.3/32 / 10.3.3.1/242001:db8:255::3/128 / 2001:db8:3::1/64client, branch 3
R4Lo010.255.0.4/322001:db8:255::4/128client, Internet edge
R4Gi0/1203.0.113.1/302001:db8:45::4/64eBGP to R5 (203.0.113.2, 2001:db8:45::5)
R5 (AS 64501)Lo1192.0.2.1/242001:db8:c0de::1/48Internet content

What you’ll practise

  • Explain the iBGP split-horizon rule and why route reflectors remove the full mesh
  • Configure a route reflector and clients in the IPv4 and IPv6 address families
  • Use no bgp default ipv4-unicast and activate neighbours per address family
  • Peer eBGP for IPv4 and IPv6 and set next-hop-self per family
  • Read originator ID and cluster list on reflected routes

The tasks

  1. Prepare the BGP processes for two address families
  2. Build the route reflector and its clients
  3. Advertise the branch LANs
  4. Connect the Internet edge for both families
  5. Test

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 BGP route reflectors and MP-BGP for IPv4 and IPv65 nodes, 4 links. Every link is listed as text below the diagram.R1R2R3R4R5Gi0/1Gi0/0Gi0/2Gi0/0Gi0/0Gi0/0Gi0/1Gi0/0
5 nodes, with the interface names each link uses. On a narrow screen, scroll the diagram sideways.
Every link, as text
  • R1 Gi0/0 to R2 Gi0/0
  • R1 Gi0/1 to R3 Gi0/0
  • R1 Gi0/2 to R4 Gi0/0
  • R4 Gi0/1 to R5 Gi0/0
Nodes in BGP route reflectors and MP-BGP for IPv4 and IPv6, with the image each runs and the vCPU and RAM it’s set to
NodeDeviceImage in Add NodeSet to
R1Cisco IOSvvios-adventerprisek9-m.spa.159-3.m91 vCPU, 512 MB
R2Cisco IOSvvios-adventerprisek9-m.spa.159-3.m91 vCPU, 512 MB
R3Cisco IOSvvios-adventerprisek9-m.spa.159-3.m91 vCPU, 512 MB
R4Cisco IOSvvios-adventerprisek9-m.spa.159-3.m91 vCPU, 512 MB
R5Cisco IOSvvios-adventerprisek9-m.spa.159-3.m91 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 CCNP ENARSI 300-410 guided labs.

  3. Open 19 - BGP route reflectors and MP-BGP for IPv4 and IPv6 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 CCNP ENARSI labs

All CCNP ENARSI labs

Related labs in other courses

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