The solution on the “traffic copy” allows from one point of presence to carry out:

DPI analysis for the needs of operational-search measures;
URL filtering;
Provide opportunities for long-term storage of traffic metadata;
Provide opportunities for redirecting information flows regarding AntiDDoS solutions;
Any other traffic analysis with third-party services..

What is pre-filter for?
A passive optical splitter is installed on the link between two devices of the Operator, which transmits a copy of the traffic from this link to the analyzer;
Depending on the task being solved by the analyzer, only Upstream traffic, only Downstream traffic or traffic of two directions simultaneously can be transmitted to it;
The traffic analyzer should have sufficient performance in order to isolate from all traffic coming to it only one that requires further processing or analysis;
With increasing traffic, the Operator is forced to install more and more expensive analyzers to cope with the growing load..

Using pre-filtering
To reduce the load on the analyzer, it is necessary to install a filter in front of the analyzer, which will discard the traffic that is not interesting to it;
Routers are sometimes used as prefilters, comparable in performance with those whose traffic from the link is removed for analysis;
Sometimes, dedicated servers are placed in front of the analyzer that are comparable in performance with the analyzers themselves, but whose task is exclusively to filter out “excess” traffic;
EcoTap solution by RDP.RU company allows you to effectively solve the problem of traffic prefiltration..

EcoFilter sharing option
Passive optical splitter removes all Upstream and Downstream traffic;
EcoTap performs pre-filtering;
EcoFilter analyzes the traffic coming to it to solve the following tasks:
URL-filtering of prohibited resources in the ILV registry;
Collection and uploading of Clickstream statistics;
Collection and upload of Quality of Experience (QoE) metrics.