BGP Deep Dive
rssfeeds-admin While back, I created a comprehensive dive into BGP. Thanks to the magic of the...
BGP
BGP Filtering Best practices for fun and security
Border Gateway Protocol (BGP) filtering is critical for securing and optimizing internet routing. Improper BGP...
BGP and MTU Deep Dive
A long long time ago, BGP implementations would use a Maximum Segment Size (MSS) of...
Patreons: MikroTik v7 BGP Troubleshooting Commands
This content is for Patreon subscribers of the j2 blog. Please consider becoming a Patreon...
Cisco BGP Troubleshooting: Essential Commands Every Network Engineer Should Know
When BGP (Border Gateway Protocol) misbehaves, the ripple effect can be massive—routes disappear, prefixes flap,...
Border Gateway Protocol (BGP): How the Internet’s Routing Protocol Works
Border Gateway Protocol (BGP) is a protocol that makes the Capitl I Internet run. It...
Private vs. Public Autonomous System Numbers (ASN): What’s the Difference?
In the world of internet networking, Autonomous System Numbers (ASNs) play a crucial role in...
VRF Without Route Target – Will the Route Be Exported?
Yesterday I posted a tricky question to Twitter. If you have a working VPNv4 environment...
Path Hunting in BGP
BGP is a path vector protocol. This is similar to distance vector protocols such as...
Valley-free Routing in Leaf and Spine Topology
Valley-free routing is a concept that may not be well known but that is relevant...