by Pavel Odintsov | Jan 24, 2019
Cisco ASR 9000 series routers have solid support for NetFlow and can generate NetFlow for a large amount of traffic without any issues. But considering the amount of available port capacity on these routers, we suggest using sampling by default to avoid control plane...
by Pavel Odintsov | Nov 24, 2018
What is AF_XDP? AF_XDP is a new kernel bypass technology integrated into the Linux Kernel. It offers very high performance and low CPU overhead. It does not require any additional licenses or third-party libraries. You can use it to process 1G, 10G or even 40G of...
by Pavel Odintsov | Sep 13, 2018
The simplest sampling configuration you can find in Netflow v5. Each packet carries sampling rate and FastNetMon can read it directly and it does not need any configuration. Also, for Netflow v5 FastNetMon ignores configuration options netflow_sampling_ratio even if...
by Pavel Odintsov | Sep 10, 2018
If you have a Linux machine and you need to export traffic from it, we suggest using hsflowd. It generates sFlow v5 stream and works very well with FastNetMon Advanced. This guide works only for machines with kernel 3.19 (CentOS 7 with standard kernel is not...
by Pavel Odintsov | Apr 27, 2018
This guide describes the required configuration steps for Huawei routers (tested with NE40) In this guide, we use a sampling rate of 1:1000, and it works as expected for bandwidth starting from 1G. To enable Netstream for the IPv4 protocol, you need to apply the...
