The document discusses Docker networking, both past and present implementations as well as the future direction. It describes how Docker networking aims to provide seamless scaling across multiple hosts, increase security and compliance while reducing costs. Currently popular implementations include Weave, Flannel and Calico. The future focuses on the Container Network Model and libnetwork, which provides a consistent programming interface and network abstractions for applications in a modularized way.

1. Docker Networking !
Past, Present and Future
John Willis!
@botchagalupe!
Docker!

2. Hello Gordon

3. Agenda
• Overview!
• Software Defined World!
• Docker Networking (past)!
• Docker Networking (present)!
• Docker Networking (future)

4. Who am I

5. Blind Spots
Physical
Virtual

6. What Changed Compute
• Disaggregation of Hardware/Software!
• Web Scale and Open Source!
• Cloud Computing!
• Software Eating the World

7. What is Changing Networks
• Disaggregation of Hardware/Software!
• Web Scale and Open Source!
• Private Cloud Computing!
• Software Eating the World

8. Network vs Compute
Cost
Network
Compute - Storage
Vertical
Integration
Horizontalization
Number Widgets - Economies of Scale

9. Look Familiar?
NetworkCapacityNeeds
Over Provisioned
NetworkUsageGrowth
Time
Under Provisioned

10. Changing Traffic Patterns
1990 2015

11. Changing Traffic Patterns

12. The Edge Changed

13. Why SDN?
• Networks are hard to manage!
• Networks are hard to evolve!
• Networks are hard to understand!

14. SDN is the Decoupling of Control
from the Data Plan

15. quick review of node distribution
• distributed!
• centralized!
• de-centralized

16. Classic Networking
Distributed

17. Centralized

18. Centralized
Forwarding Population
Controller
Match +
Action
The SDN Approach

19. Distributed

20. Distributed
the internets scales

21. Decentralized

22. Decentralized
Topology
Forwarding Population + Clustered Controller
Orchestration
Match +
Action
Retro SDN

23. OVS/DPDK Packet Forwarding Pipeline
Classifier
Table 0
Frame In
Function
Foo
Table 2
Function
Bar
Frame Out…….. Table n
Stages
Programable Data Paths

24. What do we do with all of this?
• Isolation
• Segmentation
• Advanced Segmentation

25. Isolation
• GRE
• STT
• VXLAN

26. Segmentation
• Firewall Consolidation
• QoS
• Load Balancing
• Traffic Redirection
• Monitoring

27. Docker Networking
enhance basic networking!
seamless scale for > 1 host!
Security Compliance and Risk!
reduce Opex

28. Docker Networking
transparent to developers!
native to docker!
familiar to network ops

29. Past
http://windsock.io/the-docker-proxy/

30. Past

31. Past

32. Past

33. Past

34. Past

35. Past

36. Current
• Weave
• Flannel
• Calico
• Triton
• Socketplane

37. Current

38. Future
• Container Network Model
• Libnetwork

39. Future
libnetwork - networking for containers
Libnetwork provides a native Go implementation for connecting containers!
!
The goal of libnetwork is to deliver a robust Container Network Model that
provides a consistent programming interface and the required network
abstractions for applications.!
!
Currently libnetwork is nothing more than an attempt to modularize the
Docker platform's networking subsystem by moving it into libnetwork as a
library.!
!
NOTE: libnetwork project is under heavy development and is not ready for
general use.

40. Future

41. Future

42. Future

43. Future
• Container Network Model (or CNM)
• Notion of a Default Network
• Default Multi-Host Data-path for CNM
• Network API
• Docker Network CLI