For over three decades, BGP’s AS_SET path segment has been a legal, if problematic, feature of Internet routing. In May 2025, the IETF formally ended that era. RFC 9774 doesn’t merely discourage AS_SET: it prohibits it entirely. This post unpacks...
The Internet is for everyone, yet not everyone accepts that. In light of the news about Cogent Communications and Lumen Technologies disconnecting clients in...
What is Anycast? Anycast is not a new version of IP or the latest networking technology. The RFC 1546 describing Internet anycasting for IP has been with us...
We often get support tickets from users saying that the amount of data shown in NFA does not correlate with SNMP or is simply missing at times. Quite often,...
YANG Data Modeling Language Yet Another Next Generation (YANG) RFC 6020 is standard-based data modeling language for the NETCONF management protocol. YANG is...
This article highlights the importance of the Source ID and Observation Domain ID fields when several metering processes are running on the exporter...
The name of a network interface is a string that is generated based on the interface attributes. This is a predictable naming scheme used in OS Linux that...
BGP Flowspec technology provides a more granular approach to Denial of Service (DoS) attacks mitigation when compared to old-school methods, such as Remotely...
In general, a Pseudowire (PW) is an emulation of a point-to-point connection over a packet-switched network (PSN). To put it simply, PW is an emulated...
In order to get end-to-end visibility for applications, we need complete topology data from IGP domains. One approach is to set up a central SDN controller as...
Have you ever found that a network usage reported by your commercial NetFlow analyzer does not match the actual values or that software contains bugs? …
In general, oversubscription is a subscription for more than what is available. Oversubscription represents an intentional business model and is a widespread...
There is a lot of confusion around the 95th percentile bandwidth metering. Therefore this blog posting is intended to provide you with detailed information...