Tags: wiredUbuntu disable NIC step (reboot still in effect):Scene:When the knife cabinet is connected to 2 switch modules, the system will have 2 network cards, which will affect PXE DHCP use if not disabled (the DHCP IP that will be reserved for PXE is taken away)Into the graphical interface--system settings--network--wired (based on the MAC address to determine the network card is not used)--options--ipv4 settings--method--disabled (default is DHCP)
Tags: LinuxLIUNX Network Adapter Modification ConfigurationEnter the following interface:After entering the root administrator mode inside the terminal, there is a command CD (switch directory, CD to/root directory under the ETC directory to the sysconfig system configuration file inside the Network-scripts network card text to modify), such as:After entering the network card configuration file we want to enter the network card configuration text to modify the contents of vim (Edit file) (Ifconf
Tag:author no canonical account default downwww.ratepath network device, NIC configuration: Eth0 is a physical network card: Unique MAC address, Bcast: Broadcast address, mask: Subnet mask, Lo: The IP address of the loopback that the system comes with, You can do some basic test applications, such as using 127 without a network card. 0.0.1,[emailprotected]: /# ifconfig ens33 Down (Stop a network card, restart the operating system can be played) [em
Original article address Http://www.linuxforum.net/forum/showflat.php? Cat = board = driver number = 635688 page = 0 view = collapsed SLearning should first simplify the problem and complicate the problem. Starting from the very beginning, we began to deal with complicated problems, which would inevitably make people feel stunned and stretched. The same is true for reading Linux Nic drivers. The long source code is mixed with unfamiliar variables
Early in the morning, a friend said that the dual Nic configuration in the Linux environment, sometimes get the IP address, sometimes cannot get the IP address to change the NIC speed, and now it is normal. But it cannot be used at the same time.
I searched for information on the Internet and wrote a solution as follows:
1. install and configure network devices
When installing Linux, if you have a
Rhel7/centos7 Configure Network TeamingThe network teaming can federate or merge physical networking interfaces to form logical network interfaces with higher throughput or redundancy. It appears as an alternative to the NIC binding, which coexists with the traditional bonding mode in the system.1. System environment[[Emailprotected]~]#uname-a[[emailprotected]~]#uname-alinux test033.10.0-327.el7.x86_64 #1 NBSP;SMPNBSP;THUNBSP;NOVNBSP;19NBSP;22:10:57NB
Rotten mud: VMWare Workation dual Nic configuration IP address, vmwareworkation
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A few days ago, we performed remote project implementation for a customer. The server on the customer side is Windows OS, and the business operation on our side requires linux OS. Therefore, we installed VMWare on Windows OS.
However, when conf
First, configuration scenario: Due to machine aging, considering the reliability of the machine, decided to replace the server, because the old server is 3 network (telecommunications, Unicom, mobile), so on the new machine needs to configure 3 network connection 3 GatewaySecond, the configuration steps1. Configure the IP address on the three NICDescription: Use 192.168.1.x 192.168.2.x 192.168.3.x instead of 3 public network[Email protected] ~]# cat/etc/sysconfig/network-scripts/ifcfg-eth1device
VMware cloning CentOS modifies Linux MAC addressDevice eth0 does not seem to be present, delaying initializationFailure background:In VMware Workstation, a virtual machine that has completely cloned an existing CentOS is discovered and the NIC is not started after booting. Restart the Network service and find the error message "Device eth0 does not seem to be present, delaying initialization."Www.2cto.comCauses of failure:Because of the cloning of vir
Root cause:Reverse route checking is enabled by default on LinuxIf 2 network cards are inside a LAN, then the server may find the gateway from eth0 or eth1, if a packet from eth0 into the gateway on eth1, then from the eth1 is out of the way, it will not pass. The reverse route check asks where it came from to go back.Turn off reverse route checking (replace the network card name of the second third row, depending on your situation):echo 0 >/proc/sys/net/ipv4/conf/all/rp_filterecho 0 >/proc/sys/
Small white Record:After installing Xshell, connect CentOS6.3 baseservice version, not connected, service network Restart only two OK,Baidu find information--Get the conclusion: after the network card is set, the default is not turned on, you need to set onboot= "Yes".Begin:Enter the system,LandingEnter Vi/etc/sysconfig/network-scripts/ifcfg-eth0,Note: After VI there is a space,then enterThen use the arrow keys to move the cursor to the back of the onboot (of course, I have modified this, before
To edit the network card configuration file[Email protected]/]# vi/etc/sysconfig/network-scripts/ifcfg-eno16777736hwaddr=00:0c:29:b8:40:8dType=ethernetBootproto=dhcp # #dhcp: Auto get ip,static: Static Ip,none: No protocolDefroute=yesPeerdns=yesPeerroutes=yesIpv4_failure_fatal=noIpv6init=yesIpv6_autoconf=yesIpv6_defroute=yesIpv6_peerdns=yesIpv6_peerroutes=yesIpv6_failure_fatal=noname=eno16777736Uuid=5e66154a-c337-4dfa-a555-9b8ae0bd27edOnboot=yes # #启动network服务时是否启用该网卡, yes is enabledRestart Netw
The function of the following code is to obtain the corresponding local IP address according to the name of the incoming network card, the local net address obtained before is always 127.0.0.1 the following is the correct LAN address char* hostname_to_ip (char * ifaname) {struct Ifaddrs *ifaddr, * IFA; int family, s; Char Host[ni_maxhost]; std::string str; if (Getifaddrs (ifaddr) = =-1 ) {//Perror ("Getifaddrs");//exit (exit_failure); } for (IFA = IFADDR; IFA!) = NULL; I
When the Vmbox virtual machine is configured, the operation of replicating virtual machines is often used for convenience, but the replicated virtual machines are not able to connect to the local area network even if they adopt the way of bridging networks.Later on-line check, can re-set ETHFirst look at the file /etc/udev/rules.d/70-persistent-net.rules content similar to the following:
#thisfile Wasautomaticallygeneratedbythe/lib/udev/write_net_rules#program,run bythepersistent-
When you do the experiment, you may need more than one virtual host, if you have to install from scratch is certainly unreasonable. There are two ways to do this: the first is to copy a virtual host directly into the folder and then import it into VMware.650) this.width=650; "Src=" Http://s2.51cto.com/wyfs02/M00/84/53/wKiom1eNgtbzFlrUAAAlyeF2czk359.png-wh_500x0-wm_3 -wmp_4-s_1982224013.png "title=" () 3@w]7nwjvgdo3c]980~h0.png "alt=" Wkiom1engtbzflruaaalyef2czk359.png-wh_50 "/>
Clone a virtual
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