Remember ASN
Full name: Autonomous System Number
Memory aid: Autonomous Systems have Numbers.
Public and private ASN use must follow the relevant allocation and routing rules.
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
ASN — Autonomous System Number
Identifies an autonomous system in routing protocols and registries.
Why learn ASN — Autonomous System Number?
Identifies an autonomous system in routing protocols and registries.
Where it came from
Public and private ASN use must follow the relevant allocation and routing rules.
- Memory aid (a learning cue, not the expansion): Autonomous Systems have Numbers.
Build your understanding
Work through these exercises in order. Try the task before opening a reference.
- Without looking, expand ASN: Autonomous System Number.
- Recall this memory aid: Autonomous Systems have Numbers.
- Explain the practical use: Identifies an autonomous system in routing protocols and registries.
- Explain this distinction: Public and private ASN use must follow the relevant allocation and routing rules.
- Identify ASN in a device specification, architecture diagram, or system inventory.
Documentation and sources
- IETF RFC 6793 (www.rfc-editor.org)