dual nic card

When we use FreeBSD as a gateway or firewall, we require two network cards to be installed in the system, spanning two networks, one card for the external network, and the other for the internal network. Well, as you know, it's time to get the system to support these new devices, and for the network adapters, FreeBSD is supported by a custom kernel. Of course, first let the kernel understand the hardware resources used by the device, for the

@ localhost network-scripts] # Vim ifcfg-eth2 (I have three NICs here, starting from eth0 so to eth2) [Root @ localhost network-scripts] # cat ifcfg-eth2DEVICE = "eth2" BOOTPROTO = "static" NM_CONTROLLED = "no" ONBOOT = "yes" TYPE = "Ethernet" MASTER = bond0SLAVE = yes [root @ localhost network-scripts] # Restart the network. [Root @ localhost network-scripts] # service network restart The test results after network restart are as follows: Ping the bond0 address for testing Some configurat

? The two-Nic binding implementation is the use of two network card virtual become a network card, the aggregation of the device appears to be a separate Ethernet interface device, the popular point is that two network cards have the same IP address and parallel link aggregation into a logical link work. Depending on the features that the switch can support, the

adapter is disconnected or the network adapter is broken) without any settings, you must run the following command to call the back Nic and then raise it, the NIC can be enabled later. At this time, the two IP addresses are routed to the backend Nic, that is, the backend Nic has two IP addresses.Of course, it is unrea

Embedded Linux development environment set up (I.)--Network setup of dual NICOne, the Linux distribution version is ubuntu-14.04.4-server-amd64 versionInstall UbuntuSecond, network settings 1. Add a dual NIC to the virtual machineeth0 Bridging the wireless card for Ubuntu Internet, eth1 Bridging the Wired network

Bond , is a dual-NIC binding technology. The multi-block physical network card is bound to be a logical network card, and a reliable and high-availability technology is realized, such as network card redundancy and traffic equalization. Seven types of bond modes:First, Mod=0

following format:Device=eth0Userctl=noOnboot=yesMaster=bond0Slave=yesBootproto=none3. Edit the ifcfg-eth1 NIC configuration fileTo execute the command vi/etc/sysconfig/network-scripts/ifcfg-eth1, modify the eth1 NIC configuration file with the following format:Device=eth1Userctl=noOnboot=yesMaster=bond0Slave=yesBootproto=none4. Modify the configuration file /etc/modprobe.confAdd the following in the conf

Recently there is a demand, the switch has two, do a stack, the server dual network card, each connected to a switch. This requires the server's network card into the main standby mode to increase security, so that when one of the switches is not available, the network card can automatically switch.The overall configur

Centos7 dual NIC Master Standby mode configuration ( bond0 )Set the main standby mode through the dual network card, realize when a network card is down, another network card can automatically replace the work of the network

dual NIC Master Standby mode configuration ( bond0 )1Brief IntroductionSet the main standby mode through the dual network card, realize when a network card is down, another network card can automatically replace the work of the ne

One: Principle: Linux operating system under the two-NIC binding has seven different modes. Now the general enterprise will use dual network card access, so that both can add network bandwidth, but also to do the corresponding redundancy, can be said to be a lot of benefits. And the general enterprise will use the Linux operating system with the network

In Linux, dual-nic binding is achieved by virtualizing two NICs into one. The aggregated device looks like a separate Ethernet interface device, in general, two NICs have the same IP address, and parallel links are aggregated into a logical link. 1. Modify Nic configuration a, switch directory cd/etc/sysconfig/network-scripts/ifcfg-bond0 and then create a file if

Now the general enterprise will use dual-card access, so that both the network bandwidth can be added, while the corresponding redundancy can be said to be a lot of benefits. And the general enterprise will use the Linux operating system comes with the network card binding mode, of course, now the network card manufact

255.255.0 bond0 6. after the configuration is complete, restart the machine. The following information is displayed after restart, indicating that the configuration is successful. ................ Bringing up interface bond0 OK Bringing up interface eth0 OK Bringing up interface eth1 OK In this way, you can bind an IP address to a Linux dual-Nic. Note: NIC bindi

:0c:29:34:7a:54Slave queue ID: 02.6. Verification Test Physically turn off a network card (unplug the network cable) # before closing, the rate is 2000mb/s$ ethtool bond0settings for bond0:supported ports: [] Supported link Modes:not reported supported pause frame use:no Supports auto-negotiation:no advertised link Modes:not rep Orted advertised Pause frame use:no advertised Auto-negotiation:no speed:2000mb/s duplex:full Port:oth Er p

Purpose: Two network card traffic load balanced, redundantDELL R720:4 block NIC (requires switch support), divided into management network and business NetworkSystem: CentOS6.5 Bind the Nic em1 and em2 , the virtual NIC name is BOND1(Management Network) # CAT/ETC/SYSCONFIG/NETWORK-SCRIPTS/IFCFG-EM1DEVICE=

1. Network Structure Machine 1: the operating system is RedHat liuux9.0, and access the Internet through the Intranet gateway 192.168.0.252. Two NICs, eth0 and eth1, are installed. The network settings are as follows:Eth0: IP = 192.168.0.180/24, netgate = 192.168.0.252Eth1: IP = 192.168.0.181/24Machine 1 also has the squid agent software installed. Machine 1 can access the Internet normally. Machine 2: Windows, IP = 192.168.0.182/24, a network card, c

1. the environment describes the virtual machine created in esxi5.5, the system is Centos6.4, the original only one network card, the name is ifcfg-eth0. To achieve network redundancy, log on to VMwarevSphereClient and add a network adapter named ifcfg-eth1 to the virtual machine. 2. dual Nic binding steps: 1. environment description The virtual machine created

It is impossible for a dual-nic computer to have two gateways, because the default gateway can only be one. Install two NICs for the UbuntuLinux server and set different ip addresses and gateways (intranet and Internet) respectively. The Internet can be accessed through the Internet Nic, and the Intranet can be accessed through the Intranet

1 What is BondThe network card bond is a kind of common technology in the production scene, which is bound by multi-net cards as a logical NIC, which realizes the redundancy, bandwidth expansion and load balance of the local network card. Kernels 2.4.12 and later versions are available for bonding modules, and previous versions can be implemented with patches. Yo