BGP & Internet Routing

1

What Is BGP?

How BGP routes traffic between autonomous systems to make the internet work.

6 min de lecture

2

ASN Numbers Explained

How Autonomous System Numbers are allocated and used in internet routing.

4 min de lecture

3

Internet Peering & Transit

How ISPs and networks exchange traffic through peering agreements and transit providers.

5 min de lecture

4

BGP Route Filtering & Prefix Lists

Learn how BGP route filtering prevents route leaks and hijacks using prefix lists, AS-path filters, and IRR-based filtering.

11 min de lecture

5

RPKI: Securing BGP with Route Origin Validation

How Resource Public Key Infrastructure (RPKI) prevents BGP hijacking by cryptographically validating which ASes are authorized to originate prefixes.

10 min de lecture

6

Looking Glass & BGP Diagnostic Tools

Learn to use BGP looking glass servers, route collectors, and diagnostic tools to troubleshoot routing issues and verify prefix announcements.

9 min de lecture

7

BGP Communities: Signaling Between Networks

Learn how BGP communities tag routes with metadata to signal routing policy between autonomous systems, with practical examples.

10 min de lecture

8

Internet Exchange Points (IXPs) Explained

Understand how Internet Exchange Points work, why they reduce latency and transit costs, and how networks peer at IXPs.

9 min de lecture

9

BGP Hijacking: Detection and Prevention

Learn how BGP hijacking works, real-world incidents, and the layered defense strategy combining RPKI, IRR filtering, and monitoring.

11 min de lecture

10

BGP Session Troubleshooting Guide

A systematic approach to diagnosing and fixing BGP session problems, from neighbor establishment failures to route propagation issues.

10 min de lecture

11

AS Path Prepending: Traffic Engineering with BGP

Learn how AS path prepending works for inbound traffic engineering, its limitations, and when to use alternative approaches.

9 min de lecture

12

BGP Multipath and ECMP Load Balancing

Learn how BGP multipath and Equal-Cost Multi-Path (ECMP) distribute traffic across multiple links for better bandwidth utilization and redundancy.

9 min de lecture

13

Creating Route Origin Authorizations (ROAs)

A practical guide to creating RPKI ROAs through the five Regional Internet Registries, with best practices for maxLength and monitoring.

9 min de lecture

14

BGP FlowSpec: DDoS Mitigation at the Routing Layer

Learn how BGP FlowSpec distributes traffic filtering rules across your network to mitigate DDoS attacks at line rate without dedicated scrubbing centers.

10 min de lecture

15

BGP Large Communities (RFC 8092)

Understand BGP Large Communities -- the modern replacement for standard communities that supports 4-byte ASNs and richer signaling.

8 min de lecture