Many websites talk about mitigation capacity and far fewer talk about clean traffic delivery. Yet a credible Anti-DDoS design does not stop at scrubbing: legitimate traffic still has to be delivered back to the right target properly.
A readable model: protected ingress, mitigation, handoff decision and clean delivery aligned with your topology.
If clean traffic is not delivered correctly, the chain remains incomplete.
Latency, MTU, routing and monitoring become central topics.
GRE, BGP over GRE, protected IPs, cross-connects or a router VM depending on the need.
The goal is often to add a clean layer, not to force a full migration.
On many Anti-DDoS websites, the discussion stops at mitigation. In real life, filtering is only part of the job. Once the attack is reduced, legitimate traffic still has to reach the right place through a delivery model that stays stable, readable and operational.
That is exactly where a large part of technical credibility is decided. A good design is not only able to absorb a flood. It also has to deliver clean traffic back without creating a new fragile point.
If the cleaning layer stops the attack but hands clean traffic back poorly, the customer still ends up with a production problem. The real result is not “the attack was seen”; the real result is “the service stayed reachable and usable”.
Clean traffic delivery is what turns theoretical capacity into an operational result. It is the difference between a platform that looks impressive on slides and an architecture that survives in production.
Legitimate traffic has to get back to the service that consumes it.
The handoff must stay coherent with routing and existing constraints.
The team has to understand what comes in, what goes out and how to monitor it.
There is no single universal model. Depending on the level of control required, clean traffic can be handed back through GRE, IPIP, VXLAN, BGP over GRE, cross-connects or a router VM that sits between mitigation and the customer environment.
The right choice mainly depends on public addressing, BGP ownership, deployment speed and how strongly you want to preserve the existing architecture.
Fast to deploy and often enough to start in a clean way.
Adds more control when prefixes and routing decisions must remain on the customer side.
Useful depending on how much simplification or control is expected.
The delivery model directly impacts perceived latency, available MTU, asymmetric routing behaviour and troubleshooting simplicity. Technical buyers watch these topics very closely, especially for gaming, APIs or critical services.
A credible handoff model therefore has to be designed from the start around production constraints: where traffic returns, how it leaves again, what MTU stays comfortable and how to avoid surprises when the attack actually happens.
In many cases the customer does not want to reinvent the network. They want to add a clean Anti-DDoS layer in front of an existing dedicated server, cluster, business proxy or custom logic that already delivers value.
That is why clean traffic delivery matters so much. It lets you add protection without turning integration into a heavy migration project.
A customer keeps their public IPs and servers where they already run. Traffic is captured by Peeryx, cleaned and handed back to the return point chosen by the customer. If the need is simple, a GRE tunnel is enough. If more routing control is required, Peeryx can also work with BGP over GRE or another suitable variant.
The objective is not to force a single model. The objective is to choose the model that makes clean traffic genuinely usable in the customer’s real environment.
The first mistake is underestimating delivery and focusing only on scrubbing. The second is choosing a return model that is more complex than necessary when a simpler design would be more robust.
Another common mistake is ignoring MTU, monitoring and asymmetric return topics until the worst possible moment: the attack itself.
Cleaning alone does not guarantee that service is truly restored.
The correct handoff is the one that fits the customer architecture.
MTU, return path, routing and monitoring are never minor details during an incident.
Yes. In many cases that is exactly the point of the design.
Yes. For many deployments, simple GRE is already a very strong compromise.
Mainly when you want to keep more control over your prefixes and routing decisions.
Yes. Without clean delivery, capacity alone does not create the expected production outcome.
Clean Anti-DDoS traffic delivery is not an implementation detail. It is the bridge between mitigation and production reality.
Talking about capacity without talking about handoff means talking about half an architecture. A serious strategy has to clean and deliver traffic back properly.
Peeryx can help choose and deploy the right return model for clean traffic: GRE, BGP over GRE, protected IPs or another delivery method consistent with your production.
