similar to: alias for network on centos 4

Hello, I've got a very unusual network interface issue on centos5. I'm setting up a router box, with two network interface cards, the first gets it's information from a dhcp server, the second is statically configured. I have no idea what happened, but yesterday the internal interface eth1 stopped showing up. An ifconfig eth1 showed the interface not found, but an ifconfig -a

What is happening in centos 5 with network config files??? I have a machine with 2 network cards. ifcfg-eth1 keeps changing to DHCP. All my static setup is gone. Why is it doing this? How can I stop it? I run "netconfig -d eth1" and re-setup my static information. I reboot and now I am back to DHCP. I have a gigabyte motherboard, nvidia chipset. forcedeth driver. eth0 is e1000.

CentOS-6.10 We have a host with the following ifcfg file contents: BOOTPROTO=none BROADCAST="" DEFROUTE=yes DEVICE=eth1 . . . GATEWAY=X.Y.Z.234 IPADDR=A.B.C.2 IPV4_FAILURE_FATAL=yes NAME="LAN Link - eth1" NETMASK="255.255.255.128" NETWORK="A.B.C.0" NM_CONTROLLED=no ONBOOT=yes PREFIX=25 TYPE=Ethernet USERCTL=no And an aliased ifcfg containing this:

hi all, When using the alias address scheme, like eth1:0 on a machine ... things are working. When that interface is disabled on box A and becomes active on box B what should Box B do to correctly update the ARP tables external to box B so the external world knows how to get to the new destination and not the old box A? Jerry

Setting up bonding in active-backup mode 1 (using ARP monitoring) on a server, it looked OK, but pulling the active link cable didn't actually work, it didn't fail over. Eventually with manual playing around with modprobe, ifconfig, ifenslave, etc., a solution was stumbled upon: enslave the eth1 device before eth0, and all is good. Why this should matter is a puzzle - I could not find

I am able to bring up a bonded NIC in Centos4 without requiring to bring up the bond0 with an ip address, but with CentOS-3 I must assign the NIC an address or eth0 and eth1 will not slave. I need to bring bond0 up without an ip address becuase I will be using tagged VLANs. ie. <snip /etc/sysconfig/network-scripts/ifcfg-bond0> DEVICE=bond0 BOOTPROTO=none ONBOOT=yes IPADDR=169.254.0.1

> First off, I assume you can ping your link-local address: > > ping6 -I eth1 fe80::a00:27ff:fe03:5b8a > > Second, you never mentioned how eth1 was assigned its IPv6 address. > Given that you've tried to embed an IPv4 address within an IPv6 address > (which is normally done with a 0:0:0:0:0: prefix), I'd guess you did it > manually. If so, with what tools?

Hi all, I just noticed that my two nics that are bonded via mode 0 are showing the same mac addy in ifconfig. Is this normal? In syslog I keep getting; kernel: pbond0: received packet with own address as source address Some guidance is appreciated before I dive in and troubleshoot. If I don't list the mac addy in my ifcfg-th# files, only one of the 2 nic comes up during boot.

Hello Am Friday 11 December 2015, 10:13:00 schrieb Gordon Messmer: > On 12/11/2015 06:04 AM, G?nther J. Niederwimmer wrote: > > I have 4 NIC on all my KVM Servers but the most time on a start (restart) > > I > > lost one NIC? It is not always the same, but this two are virtio NICs. > > > > with ifup eth0(1) the system say,I have no configured eth0 or eth1 file ?

My current route for a box shows this: route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 24.123.23.168 0.0.0.0 255.255.255.248 U 0 0 0 eth2 74.223.8.176 0.0.0.0 255.255.255.240 U 0 0 0 eth1 192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0 169.254.0.0

I have centos 64 6.5 I installed bridge-utils I installed tunctl I added BRIDGE=br0 to ifcfg-eth0 I created ifcfg-br0 with correct settings I did service network restart and I get an error about br0 not present. When I plug in the second network (USB to ethernet) It detects as eth1 What do I need to change to get this to work. Thanks, jerry

Dear Friends I have 2 netcards (eth0 to Internet and eth1 to internal network) in CENTOS 4.2, bit when I boot system the up eth0 and et1i [OK]. When I run ifconfig the eth1 has not IP configure, then I run command ifdown eth1 and ifup eth1, after eth1 is work perfect. Below I show file /etc/sysconfig/network-scripts/ifcfg-eth1 # Please read /usr/share/doc/initscripts-*/sysconfig.txt # for

On Feb 20, 2017 2:42 PM, "Rommel Rodriguez Toirac" <rommelrt at nauta.cu> wrote: Hi; I have a CentOS 6.8 x86_64 server where just run Oracle 11g 64 bit data base server. Is happen that sometimes it loose all connections (no ping, I can not access via ssh, no TNSping of Oracle server have success). When this happend I make ping from this server to some IP address of my network and

Hi, I have an eth0 interface (it's a CentOS 6 guest VM on a KVM host) which is configured as follows (see below) with a primary public IP address of xxx.xxx.xxx.130 (which works fine). I cannot set an alias IP address. I want eth0 to also use another IP address (xxx.xxx.xxx.131, so I create /etc/sysconfig/network-scripts/ifcfg-eth0:1. Then: # service network restart Shutting down

Hello, I'm following instructions in http://www.austintek.com/LVS/LVS-HOWTO/HOWTO/LVS-HOWTO.LVS-DR.html#route_on_non_ip_interface to allow my xen guest real hosts to serve virtual IP's behind LVS without having to allocate real public IP addresses for each such xen guest. I have eth1 connected via a "back-end" switch to the eth1/xenbr1 of the xen host and the other physical

Looks like there are NO command line options on system-config-network. Like -d eth0 or -d eth1 I used those alot when 2 network cards are in a box. Can netconfig be brought back to life? Can I just install the one from 5.0 on new boxes?\ Jerry

I am trying to grab the mac address for eth0 on centos 5.1 with ifconfig | grep eth0 | cut -d ' ' -f 5 and I dont get anything. What am I not doing right? ifconfig | grep eth0 | cut -d ' ' -f 1 gives me eth0 but anything else like -f 2, -f 3 etc I get nothing. Jerry

Dear Centos-Virt: This is actually a second request for help on the same issue. I finally got to try what several months ago was replayed to me and no joy was to be had. I am afraid the original thread got stale and also had extra, unnecessary data in it. Guest=XP Pro, SP2 Host=CentOS5; # uname -r; 2.6.18-8.1.15.el5 VirtualBox-1.5.0_24069_rhel5-2.i586.rpm

centos 5 had modprobe.conf entries for eth0 and if present eth1. something like: alias eth0 forcedeth alias eth1 e1000e For the new centos 6 (I have the rhel 6 client installed on my laptop) the modprobe.conf file is gone. Which is fine. I understand files can be created in /etc/modprobe.d and server the same purpose. My question is I dont see (doing a grep) any eth0 alias's in the files in

On Wed, December 23, 2015 8:06 am, Meikel wrote: > Hi folks, > > I have a server at Soyoustart.com (which is a brand of OVH). I run > CentOS 6.7 and have problems with network configuration. > > I want to add a second public ip (failover ip) to the server and did > follow the instructions in the CentOS-section of > http://hilfe.ovh.de/AdministrationIpAliasHinzufuegen >