Remember RD (routing)
Full name: Route Distinguisher
Memory aid: Routes receive a Distinguishing label.
A route distinguisher is different from a route target's import/export policy role.
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
RD (routing) — Route Distinguisher
Makes otherwise overlapping VPN routes distinguishable in supported routing systems.
Why learn RD (routing) — Route Distinguisher?
Makes otherwise overlapping VPN routes distinguishable in supported routing systems.
Where it came from
A route distinguisher is different from a route target's import/export policy role.
- Memory aid (a learning cue, not the expansion): Routes receive a Distinguishing label.
Build your understanding
Work through these exercises in order. Try the task before opening a reference.
- Without looking, expand RD (routing): Route Distinguisher.
- Recall this memory aid: Routes receive a Distinguishing label.
- Explain the practical use: Makes otherwise overlapping VPN routes distinguishable in supported routing systems.
- Explain this distinction: A route distinguisher is different from a route target's import/export policy role.
- Identify RD (routing) in a device specification, architecture diagram, or system inventory.
Documentation and sources
- IETF RFC 4364 (www.rfc-editor.org)