Services published to the Internet
An externally reachable ERP, a customer portal, an in-house SaaS or a mail server whose address cannot change when the line changes.
Network and connectivity
BGP, public IP addressing and dedicated fibre for business
When connectivity stops being a tariff and becomes architecture: routing, redundancy, addressing and end-to-end control, integrated with the data center and cloud we operate.
In one paragraph
Seintec Systems SL designs and operates business networks from its own data center in Sant Miquel de Balenyà, Osona, province of Barcelona, Spain.
For projects that require it, Seintec provides BGP connectivity, public IPv4 addressing —including multiple addresses or ranges—, dedicated fibre access, advanced routing, VPN and site interconnection.
The data center has a 10 Gb/s backbone uplink over the Xarxa Oberta de Catalunya and a high-capacity radio link as an alternate path, with automatic failover.
Seintec does not publish its own ASN or address blocks registered in its name: capability is delivered per project, with the resources each architecture calls for.
When a company genuinely needs BGP
BGP is not an automatic upgrade for every office. It makes sense when the business depends on a service staying reachable even if one network path fails.
Continuity when a link fails
When the goal is not merely to have two lines, but for traffic to keep arriving over whichever one survives, with no manual reconfiguration.
Multi-site organisations
Several branches, a data center and cloud that must reach each other over coherent routes rather than a tangle of tunnels added over the years.
Addressing that must outlive the carrier
Projects where changing provider cannot mean renumbering servers, firewalls, rules and third-party allow lists.
Hosted critical infrastructure
Dedicated servers, private cloud or colocation in our data center serving production, logistics or invoicing.
Third-party requirements
Customers, banks or public bodies demanding a stable connection origin, IP whitelisting or controlled routes.
What BGP is and what problem it solves
BGP (Border Gateway Protocol) is how networks on the Internet tell each other which destinations they can reach. Inside a company, it means the path to your services is recalculated automatically when something breaks.
A conventional connection only knows how to leave
On a standard access, the router learns a default route towards the carrier. If that line drops, outbound traffic may switch over, but inbound traffic to an IP from the first carrier stops arriving: that address is no longer reachable.
With BGP the path is advertised
Addressing is advertised to the network, and when a path disappears other routers learn the alternative. The service keeps its address and stays reachable over another route.
Convergence and control
BGP lets you influence how traffic enters and leaves: route preferences, primary and backup paths, and a clear separation between what is published and what stays internal.
Not magic — design
Badly planned BGP adds complexity without adding availability. Before proposing it we check whether the real problem is better solved with failover, a second line or a different architecture.
Conventional connection versus a BGP architecture
| Aspect | Conventional access | BGP architecture |
|---|---|---|
| Inbound traffic if the main line fails | The failed carrier's IP becomes unreachable. | The destination is advertised over the surviving path. |
| Changing carrier | Means renumbering services and notifying third parties. | The project's addressing stays stable. |
| Path control | Decided by the carrier. | Defined in the design: primary and backup routes. |
| Failover | Manual, or limited to outbound traffic. | Automatic, based on what the routers learn. |
| Complexity and operation | Low, but functionally capped. | Higher: needs design, documentation and ongoing operation. |
Public IPv4 addressing
Many projects do not need BGP, but they do need stable, sufficient public addresses. We can provide one or several public IPv4 addresses, and ranges where the project justifies it.
This is addressing made available for the project. We do not present those addresses as blocks registered to Seintec or as Seintec-owned RIPE resources.
- Publishing services: web, mail, customer portals or APIs.
- Site-to-site VPN and remote access with a fixed endpoint.
- Firewalls with per-service rules and one-to-one NAT.
- Allow lists required by banks, customers or public bodies.
- SMTP servers whose reputation is tied to the address.
- Separating environments: production, staging and management.
- Dedicated servers and private cloud with project-specific addressing.
- Colocated customer equipment that must be reachable from the Internet.
Dedicated fibre: how it differs from an office line
A business FTTH line and a dedicated access look alike at the connector and little else. The difference is not the contract number but what is shared and what is committed.
Shared versus committed bandwidth
On a shared access, capacity is divided among customers and real throughput varies. A dedicated access is sized for committed throughput, with the symmetry contracted.
Upload matters as much as download
When backups travel to the data center, users work against remote servers and video calls are constant, upload stops being a footnote in the brochure.
Two fibres are not always two paths
Two lines from the same carrier may share ducting, exchange or electronics. For genuine redundancy we review the route and combine technologies: fibre, radio link or satellite.
Integrated with the rest of the infrastructure
The access is designed alongside the firewall, addressing, VPN, cloud and backup. That is the difference between buying a line and designing a connection.
From the Internet to your application, one single responsibility
When connectivity, network, physical infrastructure and support belong to different suppliers, every incident starts with an argument about whose problem it is.
- 01Fibre or radio link
- 02Routing and BGP
- 03Perimeter firewall
- 04Own data center
- 05Servers and cloud
- 06Virtualisation
- 07Operating system
- 08Backup and recovery
- 09Monitoring
- 10End-user support
Seintec does more than host a server: it can design and operate connectivity, routing, perimeter security, physical infrastructure, cloud, backup and system administration with one single team.
Network facts
Figures published by Seintec about its network infrastructure and data center. This table grows as further parameters are confirmed.
| Parameter | Current status |
|---|---|
| Data center | Own data center, operated by Seintec |
| Location | Sant Miquel de Balenyà, Osona, province of Barcelona (Catalonia, Spain) |
| Server room | Over 150 m² of floor space, with scalable storage capacity |
| Backbone connectivity | 10 Gb/s backbone uplink over the Xarxa Oberta de Catalunya (XOC) |
| Alternate path (WAN backup) | High-capacity radio link to a remote telecommunications hub, with automatic failover |
| BGP | Available per project: design, configuration and operation of BGP architectures |
| Public IP addressing | Public IPv4 available per project, including multiple addresses or ranges |
| Dedicated fibre | Dedicated access available subject to coverage and project, alongside FTTH, radio link and satellite |
| VPN and site interconnection | Encrypted tunnels between offices, data center and cloud |
| Power | Uninterruptible power supplies (UPS) and generator sets |
| Cooling | Continuous thermal control, sized to actual rack density |
| Operations | In-house operations center with 24 × 7 monitoring and staff engineers |
We do not publish an ASN, registered prefixes, upstreams or peering agreements because they are not part of Seintec's verified information today. When they are, they will appear here.
Frequently asked questions about network and connectivity
Do you offer BGP?
Yes, BGP is available per project. We design, configure and operate BGP architectures when the scenario justifies it: published services, path redundancy, multi-site infrastructures or addressing that must stay stable.
Do you have your own ASN or registered IP blocks?
We do not publish an ASN or address blocks registered to Seintec. What we offer is project capability: BGP connectivity and public IPv4 addressing according to each architecture's needs.
Can I have several public IP addresses?
Yes. We can assign one or several public IPv4 addresses and, where the project requires it, address ranges to publish services, separate environments or meet whitelisting requirements.
Can I connect my own ASN?
We assess that case by case. It depends on the resources the company holds and on the project architecture; our engineers review it before committing to anything.
What is the difference between dedicated fibre and an office line?
An office fibre shares capacity with other customers and real throughput varies. A dedicated access is sized for committed throughput with the contracted symmetry, under whatever guarantees each contract sets out.
What happens if the data center's main connection fails?
The data center has a 10 Gb/s backbone uplink over the Xarxa Oberta de Catalunya and a high-capacity radio link to a remote telecommunications hub, with automatic failover to that alternate path.
Can you interconnect several sites?
Yes. We design encrypted VPNs and routes between offices, data center and cloud, with managed firewalls and link monitoring.
Do you work outside Barcelona?
The data center is in the province of Barcelona and our engineers work remotely across Spain, with on-site presence depending on location and project scope.
Next step
Talk to a network engineer
Tell us which services depend on your connection today and what happens when it drops. We review the scenario and propose an architecture that is proportionate, not the most expensive one.