Ethernet Services

Connect sites while keeping control of your network.

Ethernet carries Layer 2 (L2) frames. It fits when you want to retain your own routing; start with locations and who will manage routes.

It does not provide routing, security or physical diversity on its own; these must be designed.

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Business sites connected by a fibre network.

How it works

Connect sites while keeping control of your IP architecture.

Site A · LAN

Layer 2 Ethernet

Frames between sites

Site B · LAN

From the port to the remote site

The service carries frames between handover points. The variant defines point-to-point, multiple-site or hub-and-spoke connectivity; Virtual LANs (VLANs) identify segments according to the design.

The customer defines addressing, inter-subnet routing and security. Agreeing maximum packet size (MTU) and tagging prevents a live circuit from passing some flows while silently breaking others.

Site A · LAN

Layer 2 Ethernet

Locate congestion

Site B · LAN

Capacity and quality are different

Separate port speed, contracted capacity and offered load. Measure utilisation, errors and loss at both ends before blaming transport for a slow application.

For replication and backup, check windows, bursts and available service classes. A larger circuit does not fix slow storage, a saturated interface or a LAN loop.

Site A · LAN

Layer 2 Ethernet

Alternative only if designed

Site B · LAN

An agreed recovery path

If access fails, recovery depends on contracted protection or a second connection. Two VLANs on one circuit are not two physical paths.

Test failure and restoration without introducing loops, with clear switching and routing responsibilities. Verify service resilience separately from application resilience.

Illustrative case: from situation to decision

Situation: Two sites need shared services, but the team wants to keep its routers.
Option: Compare Ethernet and IP VPN according to who will own routing.
Check: Test segments, frame size and recovery with applications at both sites.

Ethernet carries Layer 2 traffic: routing, security and physical diversity need a design.

Decisions for your project

Topology and handover: Sites, ports, VLANs, tags and compatible MTU at both ends.
Load and priority: Committed capacity, bursts and traffic that cannot wait.
Demarcation and continuity: Who owns routing, security and loop prevention; alternative path and failure tests.

From design to operation

Inventory endpoints and flows; validate handover, test frames and MTU, then migrate with a defined rollback.

Complements, alternatives and variants

IP VPNAlternativeTo delegate private WAN routing.SD-WANComplementTo govern applications over IP access built on this foundation.

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What happens next?

Understand the context
What’s changing, where your teams work and what cannot fail. Still defining the brief? We can help structure it.
Design the options
Bring needs, Colt capabilities and technical criteria together. Compare alternatives and explain dependencies and limits.
Validate before committing
Coverage, feasibility, responsibilities and terms. A commercial proposal is developed with the relevant specialists.

ColtPlatinum guides the project and coordinates commercial discussions and follow-up. Colt validates feasibility, enters into the service contract, and provisions, installs and delivers the services.

Availability, coverage, capabilities, SLAs and timelines are subject to technical validation and contract. No diagram is a service guarantee.