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Default port ranges
SCION infrastucture elements use assorted well-known ports for communication, either directly on the host's IP stack (e.g. Prometheus monitoring) or via the dispatcher (SCION control plane traffic). To make things more consistent, actual deployments should default to these ports:
The dispatcher should always listen on port 30041. It typically has no monitoring port (this may change at some later date).
| Element | Control Plane | Monitoring |
|---|---|---|
| Beacon | 30252 | 30452 |
| Path | 30253 | 30453 |
| Certificate | 30254 | 30454 |
| SCIONd | 30255 | 30455 |
| Discovery | 30256 | 30456 |
Border routers are more complex, in that they have control plane ports, data plane ports internally and ports for talking to other Border routers. Also, in some cases, more than one BR may be running on a given machine, so BRs use port ranges for different purposes. Deployments should always start with the lowest ports and use them in sequence (no gaps).
| Purpose | Port Range |
|---|---|
| Control Plane | 30242 - 30251 |
| Monitoring | 30442 - 30451 |
| Data Plane* | 30043 - 30052 |
* This includes both links to other BRs as well as the AS-internal listening port