Modern IP networks operate at a scale where abnormal traffic patterns can emerge faster than operators can react. Sudden traffic spikes, protocol floods, or unexpected shifts in packet behavior may indicate misconfigurations, malfunctioning...
Flow-based (NetFlow, IPFIX, NetStream) and packet-based (sFlow) network monitoring technologies enable network administrators to gain insight into traffic...
Network monitoring is a systematic effort to monitor parameters of a computer network in order to detect issues that degrade network performance. Network...
Nowadays, the very abstract ideas underlying the quantum physics are being translated into reality thanks to new technological capabilities in the field of...
This blog post discusses BGP Labeled Unicast (BGP-LU) which is used in multi-regional networks to carry the label information. While the RFC3107 “Carrying...
The aim of this article is to discuss the importance of Recursive Lookup in BGP. First of all we need to understand the purpose of the recursion method and...
RFC 7311 defines an optional non-transitive BGP attribute called the Accumulated IGP Metric Attribute (AIGP). As we know, IGP stands for Interior Gateway...
Quality of Service (QoS) refers to a collection of technologies that networking devices use to apply different treatment to packets as they pass through the...
We have recently posted the BGP Route Aggregation eBook that discusses the benefits of route aggregation and explains the various optional parameters...
The unstable route whose availability alters repeatedly is called a flap. When flaps occur, an excessive number of BGP UPDATE messages are sent to BGP peers...
The BGP Attribute Filter feature enables BGP speakers to take a certain action based on the presence of a specified path attribute inside the UPDATE message...
Full iBGP Mesh and Route Reflection To avoid loops in a Full iBGP Mesh, BGP routers are only allowed to learn prefixes over iBGP from the router that...
Network Address Translation (NAT) was originally described in RFC 1631. Although initially presented as a short term solution for preventing the IPv4...