Remember GRE
Full name: Generic Routing Encapsulation
Memory aid: Generic packets Ride Encapsulated.
GRE alone does not encrypt the traffic.
Study area: Protocols & logical ports · Batch 5
Relevant study for: CompTIA Network+ N10-009 · Cisco CCNA 200-301 · CompTIA A+ Core 1 220-1201 · CompTIA Security+ SY0-701 · ISC2 CISSP 2024 outline
Practice with exam flashcards →Networking & Connectivity / Knowledge library
GRE — Generic Routing Encapsulation
Encapsulates network traffic inside another packet.
Why learn GRE — Generic Routing Encapsulation?
Encapsulates network traffic inside another packet.
Where it came from
GRE alone does not encrypt the traffic.
- Memory aid (a learning cue, not the expansion): Generic packets Ride Encapsulated.
Build your understanding
Work through these exercises in order. Try the task before opening a reference.
- Without looking, expand GRE: Generic Routing Encapsulation.
- Recall this memory aid: Generic packets Ride Encapsulated.
- Explain the practical use: Encapsulates network traffic inside another packet.
- Explain this distinction: GRE alone does not encrypt the traffic.
- Identify GRE in a device specification, architecture diagram, or system inventory.
Documentation and sources
- IETF RFC 2784 (www.rfc-editor.org)