SD-WAN
Terms
DIA — Direct Internet Access
- Commodity Internet
MPLS — Multi-protocol Label Switching
- A private network provided by an ISP.
- Expensive and fast.
BFD — Bidirectional Forwarding Detection
SD-WAN policy
Policies are further classified as
- Local Policy: Programed on the edges. ACLs, QoS, routing, and AAA.
- Centralized Policy: Route policy, before being sent to the edges, (Topology, VPN Membership, Application Aware Routing)
Application aware routing
AAR — Application Aware Routing
FEC — Forward Error Correction
- Every four packets, send a parity packet
Packet Duplication
- Send twice as much data via two tunnels
- The receiving vEdge router can reconstruct it
TCP Optimization and Session Persistence
- High-latency links: satellite
- Open one TCP session
- Proxy
- Reuse
- Never drop
DRE — Data Redundancy Elimination
- Modern compression
- WAN links
vQoE — Viptela Quality of Experience
- AAR, or CoR
- Edge sends HTTP probes to measure jitter and/or loss
- 0 to 10, 10 being best
VPNs
VPNs go from 0 to 65530.
Some VPNS are already used.
VPN 0
The Underlay, transport VPN. All the dTLS connections live here.
VPN 512
OOB Management. This VPN isn’t carried across the dTLS connections.
SDWAN analytics
-
Application Experience
- Application Use
-
Site Health
- Tunnel Health
-
Bandwidth Forecasting
- Capacity Planning
-
Talos Integration
- Threat Mitigation
Default permissions groups
Basic
Can view the system.
Operator
Can view the system.
Netadmin
Can perform all operations
Commands
!
! Control Setup
!
show sdwan control local-properties
show sdwan control connections
show sdwan control connection-history
!
! OMP
!
show sdwan omp peers
show sdwan omp routes
show sdwan omp tlocs
show sdwan omp services
show sdwan omp summary
show sdwan omp multicast-routes
!
! Validator
!
show orchestrator connections
References
Cisco Live - Empowering your Network with SDWAN OMP - Waqas Daar - BKRENT-3115
Cisco Live - SD-WAN Start Here - Lars Granberg - BRKENT-2108
Network Academy - SDWAN Deep-Dive
Cisco Community - Cisco SDWAN Webinar
Cisco - Design Zone for Branch/WAN - SDWAN Design Guide
Cisco - SDWAN User Documentation
Cisco - SDWAN High Availability Configuration Guide, IOS-XE 17
Cisco - Youtube - SD-WAN: Multicloud Overview and Demonstration