The European Parliament has stepped up its efforts to defend the principle of net neutrality.
MEPs have previously expressed their commitment to a free and open internet, where all web traffic is treated as equal.
However, the parliament has now adopted a stronger resolution as it bids to counter efforts to create a tiered internet.
The Industry, Research and Energy Committee Chair Herbert Reul called on the European Commission and EU member states to "closely monitor" the development of traffic management practices.
This is to ensure end users' connections are not disrupted by network congestion, and that broadband providers do not block, discriminate against or impair the ability of any person to use or offer any service, content or application of their choice irrespective of source or target, he added.
"Reasonable data traffic management is required and very useful to prevent network congestion and the smooth running of applications and services," Mr Reul noted.
"Nonetheless, it is clearly understood that traffic management practices must not be used for anti-competitive purposes."