Whenever I boot up CentOS 5,eth0 provides no connection to the internet . Deactivating and reactivating it does nothing. However, when I go to edit its settings and change nothing, then save and reactivate, connectivity is established.Why can't I get connectivity at startup?
View 1 RepliesBox has been running fine. NIC went out on me so I installed a new one.
New NIC is not saving settings when I reboot. After each reboot I need to reconfigure the IP address, etc.
Run CentOS 5, 2.6.18-53.1.4.el5 kernel.
New NIC is DLink DFE-530TX+
i install kernel rpm after i boot that kernel network not working kernel name : kernel-rt-trace-2.6.24.7-132.el5.centos.i686 [URL] error "Bringing up interface eth0: Device eth0 has different MAC address than expected, ignoring."
View 1 Replies View RelatedI have a laptop running OpenSuSE 11.2. I use the Yast menu to set up network settings via "traditional" ifconfig setup (not NetworkManager), because I found NM unusable in prior releases when doing network gymnastics such as router re-flashing, LAN reconfiguration, etc. where I needed control of the IP address, netmask, DHCP, tftp, etc. My laptop works fine with Yast "traditional" ifconfig configuration for eth0 connected to router to Internet. Works fine with Yast ifconfig configuration for USB WiFi as wlan1 to WiFi router to Internet. Also works fine for virtual machines on vmnets NAT-ed to the Internet. Works fine as long as there is only one network connection, that is.
Now, I have a second laptop. I want to network laptop #2 eth0 to laptop #1 eth0 for file transfer and/or Internet access WHILE laptop #1 is is linked to the Internet through wlan1. Unfortunately, I have not figured out how to get Yast/Network Configuration to do that. I have not been able to get Yast/Network Configuration to see both wlan1 and eth0 at the same time--when the Yast utility finishes, I do >ifconfig and >route, and I find that I have lost either eth0 or wlan1. Thus, when I do direct-connect file transfers, I loose the WiFi Internet connection on both machines.
I suspect that it might have something to do with Yast/Network Configuration utility not being able to handle two network interfaces on the host with different IP addresses. how to properly put an OpenSuSE machine on two networks simultaneously? And then how to turn on IP forwarding so that I can use laptop #1's WiFi as an Internet gateway for laptop #2?
Config a CentOS iptables.I issued some iptables rules.the rules were effective at once.Then, I came with a "iptables-save", but the "/etc/sysconfig/iptables" file hasn't been updated, it still loads the defaults rules with CentOS after reboot.
View 4 Replies View RelatedI'm running a fresh install on an intel i7 system on an asus p6t deluxe v2 motherboard with the onboard NIC (Marvell Technology pci-e). I know the NIC is working as when I boot into the onboard OS that Asus provides (Asus Express Gate SSD)I have a working net connection.Booting up CentOS hangs at determining IP information for eth0 and eventually fails with the following error:PING xxx.170.30.1 from xxx.170.31.231 eth0: 56(84) bytes of data---xxx.170.30.1 ping statistics ---4 packets transmitted, o received, +3 errors, 100% packet loss, time 2999ms, pipe 3 failed.
RTNETLINK answers: file exists.
RTNETLINK answers: file exists.
RTNETLINK answers: file exists.
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i want to change eth0 ip address from 192.168.7.143 to 192.168.7.140, but it not changed even i follow the steps in this tutorial this is content of file /etc/sysconfig/network-scripts/ifcfg-eth0.
View 3 Replies View RelatedWith virtualbox I do a test session to train myself with centos before I make big mistakes on my production server.I did take a harddiskfile vdi to another computer with virtual box. Now I have the problem that de MAC-address is changed.I can not get the mac adres anymore, becaus those computer is sold. How can i change the trust of the MAC-address in centos? Or must i change de MAC-address? If I may change the MAC-address, i must do that inside centos, end not inside virtualbox, if you understand me?
View 5 Replies View Relatedhow can i activate eth0 on terminal ?
View 1 Replies View RelatedInstalled Centos 5 on IBM T60P laptop. Intel 82573L Gigabit ethernet controller. Keep getting this erro message, "e1000 device eth0 does not seem to be present, delaying initialization."
View 3 Replies View Relatednow my system does not connects automatically when fedora start's to eth0 i have to connect it manually by pull down menu in the beginning hostnname was dbe272b22.dslam-172-17-161-245-0532-474.dsl.cantv.net i do not remember if the last part ".cantv.net" was there.... i changed hostname "dbe272b22.dslam-172-17-161-245-0532-474.dsl" maybe ending with ".cantv.net" with system-config-network for hostname "edicta" i modified /etc/hosts by hand twice, now do not remember what i did exacly but here you can see /etc/hosts
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Somehow gedit went ahead and modified its hotkeys to have save be nothing, and control s be find. How to get save back?
View 4 Replies View RelatedI changed a few files in a couple of folders that are installed from a synaptic package. How can I save the changes as an installation package or save the changes to the package and save the package as a file?
View 2 Replies View RelatedCentos 5.3 How can I change the primary nic from eth1 to eth0? My board has 2 nic's and I'm having license issues with cpanel
View 2 Replies View RelatedI have been running into network issues lately with my CentOS 5 (installed on AMD Athlon X2 - 64 bit machine about 2 years ago). It was able to connect to the network fine until yesterday when I installed more memory into the machine restarted it.
Upon restart, the boot up was paused at 'Determining IP information for eth0' step for a while and booted with out connecting to the network. I tried restarting the network (/sbin/service network restart), but this is the error message I continuously get: Determining IP information for eth0...PING xxx.1.226.1 (xxx.1.226.1) from xxx.1.226.83 eth0: 56(84) bytes of data
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I have a Proliant DL 120 G5 with CentOS 5.4 and I have installed a Brodcom Corporation Netxtrem BCM 5722 Gigabit Ethernet PCI. So I have two interfaces: eth0 broadcom eth1 Intel The eth1 works, instead eth0 don't work. I can ping itself and 127.0.0.1 but I can't ping the gateway. The results of netstat -nr is:
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I've seen this pop up a few times on the forum but my setup is slightly different. I have a PC with an ASUS P5N32-SLI Premium motherboard. I've just installed CentOS 5.1. Yes, I know this is ancient, but this is what they're developing on at work. I'm trying to get connected either via ethernet or wireless and neither one works. When I boot the computer to Window XP it does connect on ethernet. Ethernet should be easy so I'm concentrating on that. But I get "Determining IP information for eth0... failed." after a 'service network start'.Here is some other information that was asked on similar threads:
> uname -rmi
2.6.18-53.el5 x86_64 x86_64
> grep eth0 /etc/modprobe.conf
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New to CentOS5.5 I'm experiencing some trouble in order to continue my configuration. I've just installed my vmware tools and configured my network card with system-config-network
Edit eth0 (eth0) - vmxnet3 -> with a static IP I rebooted my server and since then I lost my eth0. I still see it in system-config-network, but I can't active it anymore.:
/etc/init.d/network start Bringing up interface eth0: Device eth0 has different MAC address than expected, ignoring. [FAILED]
I'm having a problem and despite I have googled a lot cant find the root cause. I have a server with two embedded NICs and centos 5.5 loaded. I need to have one NIC with a fix internal IP address to communicate with the intranet and a second NIC with a fix address from my telephone provider. I know I cant have two different gateways on the net so I configured only the gateway for the second NIC leaving the field empty for the first.
I found that the first NIC is handling all the traffic for both interfaces (eth0 and eth1) and the second NIC is in standby (or doing nothing). This is causing the traffic intended for the second NIC never reach their destination. After a couple days working with the BIOS and other configuration files I tried another way of solve the issue. I put a fix address for the first NIC and another fix address for the second NIC (both in the same subnet) and from a computer pinged successfully both addresses. However if I disconnect the cable for the first NIC both interfaces goes down (eth0 and eth1) and both pings fails. If I disconnect the cable for the second NIC (with the first one connected) both pings still running without any disturbance.
I worked also in a second server with different hardware (different kind of motherboard, different NIC manufacturer, etc.) but the problem is also present in this second server. I was reading about NIC bonding or teaming, but this configuration is not present in the modprobe.conf or in the ifcfg-eth0 files, so I believe the problem is not related with this feature. Do you know what is happening with the NICs and how can I get two really, fully independent NICs?
I have 2 network interface on 1 server and i got a problem finding a solution for it.I have 1 java application and i want it to use the eth1 for that application and not the default eth0. On eth0 i got for example xx.xxx.xx.22 and on eth1 i got xx.xxx.xx.23 and i want the java app to use the 23 ip one.
View 3 Replies View RelatedI am currently working to get to a stable dual boot Win7/CentOS 5.5 configuration on a Dell Latitude E6510 with the Intel 82577LM chipset. I haven't gotten the Centrino N WiFI chipset working yet, but the Eth0 device was working just fine.However, yesterday I did a system update. I did not pay close attention, but I believe the update did mention networking, because I thought it might help me get my wireless going. Now, Eth0 fails with the message, "Determining IP information for eth0... failed; no link present. Check cable?" It does this at boot up and if we try reactivating it once the system is up. We have tried unstalling and re-installing the driver.The Window 7 boot sees the adapter and runs just fine. I was at a different site location yesterday when everything was working, but my co-workers and I can't help but think it might be related to the update yesterday, since everything worked prior to the update and Windoze 7 works fine with the adapter.
I have not been able to mount my NTFS harddrive on the CentOS side, despite installing fuse, and I don't have wireless, which makes it difficult to get access to new drivers. I also have a FAT32 partition that would be great to share between the boots for passing info, but I haven't found a way to mount a FAT32 partition in CentOS.
Everything worked fine until very recently, and without apparently ANY change to the settings on the server, a secondary IP that was assigned to my server won't work anymore..Any IP attached to the same server works fine.. So in my case, the problematic IP is 213.8.155.67. The other IP (213.8.155.42) works without any problem.How would I go about troubleshooting this?
ifconfig:
eth0 Link encap:Ethernet HWaddr 00:26:B9:44:11:3A
inet addr:213.8.155.33 Bcast:213.8.155.127 Mask:255.255.255.128
inet6 addr: fe80::226:b9ff:fe44:113a/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
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I've been racking my brains over the past few days trying to figure out why my NIC card (network interface card) won't show up in the ifcfg-eth0 file.When I configure a new server (like this one) I always go to:/etc/sysconfig/network-scripts/ifcfg-eth0 and from there I usally see the name of my NIC's manufacturer's name and the hardware MAC address.Then it's only a simple process of entering the server's IP address, netmask and gateway and I'm up and running in no time...But not in this case! the ifcfg-eth0 file is completely blank! There's not ONE single line of config info in it... (?)The server runs an Intel core 2 duo (dual-core) CPU with 1 gig of RAM.
I've even re-formatted the drive and re-installed Centos 5.1 on the darn thing 3 times and it simply won't work.The server cannot resolve when I do a wgetIt also gives me a 'resolution problem in the named configuration'.What I don't understand is that the 2 small LEDs on the Cat 5 cable lights up and flash at what appear to be regular intervals here.
I have just upgraded a CentOS 5.2 box to Centos 5.3
I did have a bridged networking setup for Virtualbox which worked well. eth0 was bridged with br0. br0 boot protocol was DHCP and it sent its DHCP_HOSTNAME to the windows DHCP servers.
since the upgrade the br0 does not get an address but the eth0 does. I found that the scripts in /etc/sysconfig/network-scripts/ifcfg-* are getting rewritten.
I figure I may not need to have a bridge any more so I stripped that out to try to get a simple network setup working. I now just have eth0. I edited /etc/sysconfig/network-scripts/ifcfg-eth0 so that it looked like this,
~]# cat /etc/sysconfig/network-scripts/ifcfg-eth0
# Attansic Technology Corp. L1 Gigabit Ethernet Adapter
DEVICE=eth0
BOOTPROTO=dhcp
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When I setup the server I added multiple ips. Now that I need to edit ip info I can't find any alias files in the network-scripts folder. But restarting server the ips work fine. Is there some where else that this would be stored.
View 2 Replies View RelatedProblem: Can't get bridging to work properly.
I'll start by saying that most of this is built inside of a 64bit ESXi 4.1.0 server. Should be obvious by the picture below.
Trying to set up a bridged CentOS box. Ultimate goal is to set up a Transparent Firewall. The machine labeled 'Desktop' is a Windows XP running DHCP. It gets assigned an Internet routeble IP address. At this point, nothing is running a firewall.
Symptoms:
Gateway can ping CentOS bridge
CentOS bridge can ping gateway
CentOS bridge can resolve DNS names and ping FQDNs on the Internet.
CentOS bridge CAN NOT ping Desktop
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is there any way that i can save the default keyring password? each time i logon, it asks for the passwd and once i provide it, everything is all right. But it's kinda annoying.
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Got up to go to work and all of a sudden my settings have changed. My bottom panel for my tabs is gone and instead of my applications on the top they are now on the side. Whats up with this? And what the hell is Ubuntu One?
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