onboard nic

In the "Device Manager" on the computer, many people have names such as "#2" and "#3" behind the network card. If your computer has only one network card, this indicates the driver of the NIC.ProgramYou have been installed on your computer at least twice. Why is this happening? This is because you have changed the expansion slot of the NIC. For intentional or unintentional purposes, you may change the NIC

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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

SCP upload Ifenslave.tar package, unpack tar xvf ifenslave.tar Install this software 650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M01/6E/E8/wKioL1WLlqegWN-DAABC_iLKvlM727.jpg "title=" 1.png " alt= "Wkiol1wllqegwn-daabc_ilkvlm727.jpg"/>3. Modify the configuration file vim/etc/network/interfacesTo comment out unwanted messages like eth0 or eth1.650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M02/6E/E8/wKioL1WLlxuRSJ3SAAGf4tkFfpM788.jpg "title=" 2.png " alt= "Wkiol1wllxu

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-