Remember DR (OSPF)
Full name: Designated Router
Memory aid: Designate one Router to coordinate the shared segment.
This DR is not disaster recovery and is not necessarily the traffic's default gateway.
Study area: Protocols & logical ports · Batch 7
Relevant study for: CompTIA A+ Core 1 220-1201 · CompTIA Network+ N10-009 · CompTIA Security+ SY0-701 · Cisco CCNA 200-301 · ISC2 CISSP 2024 outline
Practice with exam flashcards →Networking & Connectivity / Knowledge library
DR (OSPF) — Designated Router
Reduces adjacency and flooding complexity on supported OSPF multi-access networks.
Why learn DR (OSPF) — Designated Router?
Reduces adjacency and flooding complexity on supported OSPF multi-access networks.
Where it came from
This DR is not disaster recovery and is not necessarily the traffic's default gateway.
- Memory aid (a learning cue, not the expansion): Designate one Router to coordinate the shared segment.
Build your understanding
Work through these exercises in order. Try the task before opening a reference.
- Without looking, expand DR (OSPF): Designated Router.
- Recall this memory aid: Designate one Router to coordinate the shared segment.
- Explain the practical use: Reduces adjacency and flooding complexity on supported OSPF multi-access networks.
- Explain this distinction: This DR is not disaster recovery and is not necessarily the traffic's default gateway.
- Identify DR (OSPF) in a device specification, architecture diagram, or system inventory.
Documentation and sources
- IETF RFC 2328 (www.rfc-editor.org)