Recent disruptions to two undersea internet cables in the Baltic Sea have yet again highlighted a pressing issue for businesses worldwide: the vulnerabilities inherent in our global communications infrastructure. These incidents, occurring amid...
The Internet we know nowadays cannot properly operate without using the Domain Name System (DNS). DNS syncs up domain names with IP addresses so humans can...
Simple Network Management Protocol (SNMP) is a well-known standardized application layer protocol, originally developed for network management but mostly used...
Duplication of NetFlow occurs when the NetFlow records about the same flow are exported multiple times to a NetFlow collector. In turn, the volume of network...
In our previous article we have discussed the alternative way to get flow statistics using a NetFlow generator. One of the fundamental features of the...
What is a NetFlow Generator? A NetFlow generator is a dedicated network appliance or software running on a PC and listening on a single or multiple network...
This is the second part of the post dedicated to NetFlow configuration. In the first part, we’ve discussed the configuration of Flexible NetFlow on Cisco IOS...
One of our recent blog posts dedicated to NetFlow technology provides the necessary knowledge needed to understand NetFlow principles and what it is used for....
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...
