WAN Circuit Guidance
Hub/Data Center appliances or appliances that have mesh overlays must have a compatible IP/NAT. See Chart below
In a mesh topology, all devices are connected to each other. Therefore, at least one circuit at each location must be in the "fully supported" section of the table.
"Burstable" circuit types are not recommended
Fully supported Tunnel formation
| HUB/Local MESH device | Spoke/Remote MESH appliance |
|---|---|
| Direct Public | Direct Public |
| Direct Public | 1:1 (static NAT) |
| Direct Public | SNAT |
| Direct Public | PAT |
| Direct Public | CG-NAT |
| 1:1 (static NAT)/Port Forward | 1:1 (static NAT) |
| 1:1 (static NAT)/Port Forward | SNAT |
| 1:1 (static NAT)/Port Forward | PAT |
| 1:1 (static NAT)/Port Forward | CG-NAT |
Partly Supported Tunnel Formation
| HUB/Local MESH device | Spoke/Remote MESH appliance |
|---|---|
| SNAT | SNAT |
| SNAT | PAT |
| SNAT | CG-NAT |
Unsupported Tunnel Formation
| HUB/Local MESH device | Spoke/Remote MESH appliance |
|---|---|
| PAT | PAT |
| PAT | CG-NAT |
| CG-NAT | CG-NAT |
Best Practice: Two diverse carrier circuits at all locations
Examples for binary digit transportation options
- Group A:(GA)
- Cable modem
- Business fiber (BF)(FTTH/FTTB)
- Low Earth Orbit satellite (unlimited data no obstructions)
- Dual Carrier 4/5G LTE with good signal/speed test (unlimited data)
- DSL (Fast near node)
- Expensive options:
- DIA (higher cost, high reliability, medium bandwidth for cost)
- MPLS(highest cost, high reliability, low latency, Low bandwidth)
- Group B: (GB)
- Two cable modems/Business Fiber/DIA (same ISP)
- 4/5G LTE with good signal/speed test (unlimited data)
- DSL (slower far from node)
- Low Earth Orbit satellite (unlimited data some obstructions)
- Group C:(GC)
- 5G LTE with good signal/speed test (data limited or low signal)
- 4G LTE with good signal/speed test (data limited or low signal)
- two or three 4/5G LTE diverse carriers with fair signal/speed test (data limits)
- Low Earth Orbit satellite (limited data)
- High orbit satellite
- Preferred combination:
- 2-GA + 1-GB +1-GC
- 1-GB + 1-GB +1-GC
- Availability limited Combination
- 3-GB + 1-GC
- 2-GB + 1-GC
- 1-GB + 1-GC
- Better than nothing combinations
2-GC
1-GC
Bandwidth Requirements:
While the bandwidth requirements for SD-WAN are highly variable, circuits with less than 1 Mbps upload and less than 3 Mbps download are generally not enough to sustain even a single user. However, multiple circuits can be combined, and this may be better than nothing as a last resort. Lower bandwidth circuits will still provide FEC capability to the SDWAN system.
Updated 4 months ago
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