Remember RED
Full name: Random Early Detection
Memory aid: Random Early action Detects a growing queue.
RED is queue management, not an intrusion-detection technique.
Study area: Network architecture & switching · Batch 7
Relevant study for: CompTIA Network+ N10-009 · Cisco CCNA 200-301 · CompTIA Security+ SY0-701 · ISC2 CISSP 2024 outline
Practice with exam flashcards →Networking & Connectivity / Knowledge library
RED — Random Early Detection
Signals congestion by probabilistically dropping or marking packets before a queue fills.
Why learn RED — Random Early Detection?
Signals congestion by probabilistically dropping or marking packets before a queue fills.
Where it came from
RED is queue management, not an intrusion-detection technique.
- Memory aid (a learning cue, not the expansion): Random Early action Detects a growing queue.
Build your understanding
Work through these exercises in order. Try the task before opening a reference.
- Without looking, expand RED: Random Early Detection.
- Recall this memory aid: Random Early action Detects a growing queue.
- Explain the practical use: Signals congestion by probabilistically dropping or marking packets before a queue fills.
- Explain this distinction: RED is queue management, not an intrusion-detection technique.
- Identify RED in a device specification, architecture diagram, or system inventory.
Documentation and sources
- IETF RFC 2309 (www.rfc-editor.org)