We are, network engineers, have many *nix tools at our disposal: exaBGP, nmap, tcpdump, to name a few. And with UNetlab its very easy to run a linux system inside a topology (not to mention that you could use cloud
pnet interface to bridge unetlab topology with the real world). By default UNetLab’s linux template opts to VNC access, which is cool if you have a GUI, but for a networker – CLI is the only love. In this post I will share with you a method to get telnet access to a linux image inside the UNetLab.
All credits go to my colleague – Anatoliy Kolpakov.
A good tutorial on what is ESXi Web Client Interface is, how to install and maintain it by http://www.vladan.fr/
This time I will cover in details basic Layer 3 VPN
(L3VPN or VPRN) configuration, and I decided to kill two birds with one stone by inviting Juniper vMX (read here
on how to add vMX to Unetlab) to our cozy Alcatel-Lucent environment.
In this post we will configure BGP/MPLS VPN [RFC 4364] including:
- PE-PE relationship configuration with VPN IPv4 family introduction
- PE-CE routing configuration with both BGP and OSPF as routing protocols
- Export policy configuration for advertising VPN routes on PE routers
- AS override configuration
- and many more
As a bonus track I will share with you Control Plane and Data Plane evaluation diagrams which help a lot for understanding the whole BGP VPN picture. Take your seats, there is no flying from VPNs!