![]() ![]() Once it has the records of about 50 packets it exports them into a UDP datagram. As the router sends the packet to its next hop, so it record source, destination and port data. ![]() In order to its job the router needs to inspect the header of each packet it receives. Whether the network packet is TCP or UDP, its IP header has a mine of information. To complete the picture of the comprehensive nature of the Orion Traffic Analyzer, it can also process ICMP, syslog and SNMP (Simple Network Management Protocol). This is why the Orion NetFlow Traffic Analyzer has the capability to process J-Flow packets in addition to NetFlow.īecause of the open source nature of NetFlow, collecting the UDP packets is straightforward, the skill of the SolarWinds software lies in analyzing the data and presenting it ways useful to network managers. In a parallel development Juniper Networks developed a protocol for their routers called J-Flow which is similar to NetFlow. Since NetFlow is open source it can be used by other router manufacturers, and also with traffic analyzers other than Orion. These datagrams are then collected by software such as the Orion NetFlow Traffic Analyzer. Network monitoring relies on the routers collecting then exporting detailed NetFlow (or J-Flow) information in UDP packets. NetFlow has now become a mature technology, and though the use of templates, Version 9 has become future proof. Possible Network Problems NetFlow Can Tackle.Incidentally, this is why you cannot test SolarWinds Traffic Analyzers without access to a router. It was but a small step from extracting routing information from the IP packets’ headers, to developing a reporting capability for NetFlow. NetFlow started life as a mechanism to control caching on Cisco routers, and thus speed-up network packets. Cisco developed the NetFlow protocol as part of their Internetwork Operating System (IOS) back in 1996.
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