This is my blog, I've been preparing for my CCNP ENCOR exam, so I mostly write posts about networking stuff recently: Routing/switching, BGP, OSPF, Multicast, MPLS VPNs, Security, QoS etc. Currently I have the CCNP ENARSI, the CCNA and the Linux+ certifications, I also have a degree in telecommunication.
I sometimes create educational videos, check out my YouTube Channel: Networking Explained
I sometimes upload my Python scripts, YAML files for CML labs, and pcaps for Wireshark packet analysis to my GitHub repos.
This is what I listen while I do labbing and write posts: my Spotify playlist.
We continue the previous VXLAN lab first by providing redundancy for the RP. I'll show two methods: Anycast RP with MSDP and Phantom RP which…
Read more →VXLAN is tunneling protocol, which is mainly used in data centers. With VXLAN we can encapsulate the whole Ethernet frame in a UDP datagram. VXLAN…
Read more →Scapy is a very powerful packet crafting, packet manipulation tool written in Python. With the help of Scapy we can perform many kind of malicious…
Read more →In the following post we're going to take a look at these two features: what are their purpose and in which situations can they be…
Read more →The AS-PATH is one most interesting BGP path attribute. It's a well known, mandatory, and transitive path attribute, so it must be included in every…
Read more →Because of scalability reasons we might have multiple IGP processes running within our core network. If we have many routers and prefixes we might have…
Read more →To practice for my CCNP ENCOR I've been creating simple Python scripts recently. I've got a few Raspberry Pis and temperature sensors lying around at…
Read more →By default the IGP metric (ISIS/OSPF cost) determines how the packets are forwarded within the MPLS core. With MPLS Traffic Engineering (TE) we can be…
Read more →We continue one of my previous VPLS topology: this time we're going to take a look at what happens from the perspective of the service…
Read more →In the previous post I created the VPN tunnel between the two sites with a crypto map. This implementation is very static, the ACLs define…
Read more →We continue the previous IPsec lab with basic troubleshooting. If you haven't read part 1, read that post first before you continue. So what are…
Read more →In this lab we're going to establish secure communication between two private subnets located at two different sites over an unsecure network (the internet for…
Read more →After going through how we can configure Profile 0, this time we're going to take a look at two other profiles which both require mLDP.
Read more →Previously I wrote a few posts about how multicast works but only within an enterprise environment without MPLS. This time we're going to take a…
Read more →This time we're going to configure OSPF, but not with the CLI, we're going to use a network automation tool called Ansible. I'm going to…
Read more →After going through inter-AS Option A, B and C, this time we take a look at the CSC implementation. This is very similar to the…
Read more →How can a router detect when a BGP neighbor, or just any kind of IGP neighbor device goes down? If the two devices are directly,…
Read more →We're going to continue the previous inter-AS L3VPN Option C lab, and in this post we're going to be focusing on customer GREEN who runs…
Read more →We finish the inter-AS L3VPN series with Option C: As I foreshadowed in the end of the of the Option B post, Option C is…
Read more →In the previous post we've seen how we can set up an inter-AS L3VPN with Option A. We continue this lab, but this time we'll…
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