As part of my daily work designing Service Provider networks, I often face MTU mismatches. Here’s a clear guide on how to prevent them. In WAN environments with multiple encapsulations (GRE, MPLS, IPsec, PPPoE, etc.), mismatched MTU and MSS values ca...

As I continue my CCIE studies, every time I want to deeply understand the why behind a concept, I make it a habit to write it down and share it with the community. I believe this not only helps me reinforce my own learning but also creates a resource...

While studying L3VPN Intra-AS, I had a reflection about the use of Route Targets (RTs)In many configurations, we simply say:“We configure the RTs to import and export routes between VRFs,”but we rarely take the time to analyze how they are structured...

Today I came across yet another firewall policy that blocks ICMP Echo Request (ping) as a so-called security measure. While I understand the intent behind this practice, I can’t help but ask:Does this truly improve your security posture, or does it j...

 Based on my current study of the CCNP SP CORE 350-501 exam, I have decided to share in a blog what I have been learning about Segment Routing using EVE-NG and XR version 6.0.1. It is worth noting that this version has limitations, and it is advised ...