Connecting to the lab server

Open your favourite Terminal Emulator

SSH to the netlab server:

$ ssh-keygen -R netlab.nanocat.net   <- delete the cached fingerprint
                                        (lab server rebuilt frequently)
$ ssh lab@netlab.nanocat.net
Password: (generated fresh each week)

List the running containerlab devices:

$ sudo containerlab inspect --all

Connect to an Arista device:

$ sudo docker exec -it clab-device–name Cli

.. or connect to a Linux device:

$ sudo docker exec -it clab-pcXX-name bash

Goals

• Build a global network with sites in Bucharest, Amsterdam, Berlin, Helsinki and Sydney

Diagram: Global

Diagram: Site

Overview

• Now:
  • Create an IP address plan
  • Configure spanning tree
  • Create a management VLAN
  • Create VLANs for the customers (pc1-pc3)
  • Configure the router
  • Test that PCs can ping one another within a site
• Soon:
  • Configure BGP sessions between router and ISP
  • Advertise and learn the appropriate networks
• Later:
  • Convert to an L3 leaf-spine
  • Configure iBGP
  • Configure VXLAN
  • Get Layer 2 traffic across the internet like a boss

IP address plan

• You’ve received the following definitely real allocations from your RIR:
  • AS: 65420
  • BUC: 145.224.90.0/23 + 176.119.219.0/24
  • BER: 104.101.236.0/23 + 81.2.187.0/24
  • AMS: 13.32.240.0/23 + 31.171.200.0/24
  • HEL: 178.16.176.0/23 + 192.53.157.0/24
  • SYD: 1.0.4.0/23 + 203.33.18.0/24
• Open the spreadsheet here:
  • https://docs.google.com/spreadsheets/d/1FevHIOJb1swzmeK_0-NXG5ug7BmXeViMwcAkq4C5ZxQ/edit?usp=sharing
  • Fill in your city’s IP plan
  • Fill in your city’s VLAN plan

Configure spanning tree

Choose your root bridge, and then:

!
spanning-tree root primary
!

Verify the configuration with show spanning-tree.

Configure your management VLAN

Please ignore the official management interface. We will create our own.

!
vlan XXX
   name management
!
interface vlanXXX
   description --- management
   ip address x.x.x.x/x
!
interface ethXXX
   description --- trunk to xxx:ethx
   switchport mode trunk
   switchport trunk allowed vlan XXX
!

Create VLANs for the customers

Three customers, one VLAN each.

!
vlan XXX
   name customer-XXX
!
interface ethXXX
   switchport trunk allowed vlan add XXX
!
interface ethX
   description --- customer pcX:eth1
   switchport mode access
   switchport access vlan XXX
!

Create Layer 3 VLAN interface for the customers

On your router,

!
ip routing
!

and then for each VLAN:

!
interface vlanXXX
   ip address x.x.x.1/x
!

TBC!