This document discusses advanced traffic management and vDNS. It describes global traffic management techniques like failover, IP intelligence, and weighted distributions to direct traffic. It also covers managing traffic through load balancing, content delivery networks, and at the DNS level. vDNS is introduced for traffic management using traffic policies, endpoints, rules policies, and monitoring rules. Use cases demonstrate failover for high availability, weighted distributions for load balancing, and geolocation routing for regional content.

1. Advanced Traffic Management
vDNS
26 August 2019
Vu Tran

2. Content
- Concept Global Traffic Management
- How to Manage Traffic
- Introduction to vDNS
- Use Case

3. Global Traffic Management
Source: Akamai

4. Global Traffic Management
- DNS is an abstraction layer
- Smart answer to manage traffic

5. Global Traffic Management
- Failover: directs requests to an alternate location when there
is a failure at the primary site
- IP Intelligence — directs requests to a data center based on
geographic or IP rules
- Weighted — directs requests to data centers based on preset
percentage splits
- Any combination of the above

6. Global Traffic Management
- Policy rules that trade off between availability and
performance
- Load feedback - based on real time communication with the
customer’s premises, load policies can be modified
depending on actual data centers’ performance

7. Manage Traffic
- Load Balancing
- Network proxy to servers
- Content Delivering Networking (CDN)
- Fully managed distribution
- DNS Level
- More flexibility than CDN , multiple origins

8. Manage Traffic: Load balancer
1. DNS Level
2. Load Balancer layer 4
3. Load Balancer Layer 7

9. Manage Traffic: Content delivery
network (CDN)

10. Manage Traffic: DNS Level
Source: imperva

11. vDNS for Traffic Management
- Traffic Policy: a document which governs routing decisions
- Endpoints
- Rules Policy
- Monitoring rules
- Versioning

12. vDNS for Traffic Management
Currently we have:
3 Pops in Vinadata Cloud
This year will have more 10 pops in Viettel, VNPT and
Singapore

13. vDNS for Traffic Management
- Traffic Policy
- Endpoints
- Hybrid/low level infrastructure
- IP Address/CNAME
- Application Load balancer
- CDN

14. vDNS for Traffic Management
- Monitoring Rules:
- TCP/UDP port
- HTTP Status

15. vDNS for Traffic Management
- Traffic Policy
- Rules Policy : pipeline chain
- Failover: master - secondary
- Weighted
- Static score
- Latency response time
- Multivalue (Group healthy site)
- Datacenter (by group failover)
- Geolocation: region - country - city

16. vDNS for Traffic Management
- Traffic Policy
- Other Rules Policy
- On/Off By Timer
- by Vietnam ISP
- by type of Network: broadband,wifi,...

17. Usecase: Failover, high-available
Source: AWS

18. Usecase: Weighted, load balancing
Source: AWS

19. Usecase: GEO Location, regional content
Source: AWS