gigabit network tap

Resolving network bottlenecks Gigabit Ethernet becomes the key As IT departments add input/output-intensive and communication-intensive applications to servers, data center networks are facing a significant increase. Systems installed around 1 GbE are no longer efficient; in many cases, replacement technology: 10 GbE is also a network bottleneck. Fortunately, t

As we all know, Ethernet technology is closely related to cabling technology, so how does gigabit Ethernet technology develop to support a new generation of cables, especially the six types of cable in the protocol? 　　 Gigabit network need six kinds of wiring? Wiring industry at present the need for six types of wiring is a lot of controversy, remember when the

1. Create a virtual bridge with the Brctl command br0Brctl ADDBR Br0Ifconfig br0 up//Two commands above will cause network disconnection2. Bind the virtual bridge BR0 with the physical NIC Eth0Brctl addif br0 eth0Ifconfig eth0 0.0.0.0//bridge is similar to a switch, it can be considered that the eth0 is just a port on the switch, you can think of all packets from the eth0, but ultimately by the bridge to determine the flow of packets, so as long as th

Previously, we talked about libpcap packet capture, especially in the case of a gigabit network, which results in a large number of packet loss and a long time of searching on the Internet. This is probably a method like PF_PACKET + MMAP, NAPI, and PF_RING, I tested PF_RING + libpcap and found that the packet capture performance was good under gigabit

universe multiverse deb-src http://mirrors.yun-idc.com/ubuntu/ Trusty-backports main restricted universe multiverse sudo apt-get updateSecond, compile the kernel source code (to ensure that your virtual machine storage is large enough, this article's virtual machine allocation 80G):1, pre-compilation preparation, installation of the necessary dependencies:Apt-get Install Libssl-dev Libncurses5-dev2. Download the kernel version via the following link:https://www.kernel.org/pub/linux/kernel/3. Mo

As we all know, Ethernet technology is closely related to Cabling Technology. How can we develop the Gigabit Ethernet technology to support the next generation of cables, especially the six types of cables in the protocol?■ Do I need six types of cabling for a gigabit network?Currently, there is a lot of debate over whether cat6 cabling is required in the cabling

Under the KVM can generate two types of network cards, RTL8139 and E1000, in fact, should be the underlying generation of different chips of the network card, and not with the host network card is what model is what model, wherein the default is 100 Gigabit network card, tha

When we use VMware virtualization software, we often find that they can all Virtualize a nic, which seems amazing. In fact, in Linux, there are two kinds of virtual backup, point-to-Point device in Tun. Tap indicates an Ethernet device. It is used as a virtual NIC Driver. Program Data receiving and sending does not directly deal with the real network card, but is transferred through the user State. In Linux

Some time ago, the virtual network card installation was required.ProgramSo in the website to collect some, find to find, did not see a separate installation, most of the said to install openvpn, and then only install the virtual network card of the tap-win32. In this case, the program of openvpnis used to run tapinstall.exe install oemwin2k. run the command line

pairThe corresponding standard in practical application is 1000BASE-TX but there are not many devices that support this standard.It differs from the standard 1000base-t of the Thousand M line by "using 4-wire transmission but alone with 2 to receive a separate 2-to-send"Reduced line usage (use only 2 pairs of lines to receive 2-wire transmission) reduces crosstalkSo the request is more than the Class 5 line has a stronger transmission frequency can only use 6 lines to do transmission mediaCAT6A

in front of the Libpcap capture packet, especially in the gigabit network conditions, a large number of drops, online search for a long time, probably all Pf_packet +mmap,napi,pf_ring and other methods, I pf_ring+libpcap experiment, The detection of gigabit network conditions, capturing the performance of the packet is

As the core connection device of an enterprise network, a vswitch has the primary performance standard to ensure the speed of the enterprise network. At present, enterprises have launched various Ethernet switches. Many parameter performances are marked by manufacturers themselves. These performance parameters differ from the actual situation of switches. Hardware Netwo