I have two ethernet ports on my SuperMicro server. When I start the system, only eth1 is operable. If I ifup eth0, I get a message that it is already configured, but I can't ping any of the IPs on it.
If I ifdown eth1, then ifdown eth0 and ifup eth0, then I can ping any of the IPs on eth0 in the interfaces file. Of course, now eth1 is not reachable.
Code:
Code:
I try to generate a server client code. What i try to do is sending video streams from eth0 and eth1 to the other server programs' eth0 and eth1. In order to do that, i decided to use SO_BINDTODEVICE. But the code is not working. Am i misunderstood the usage of SO_BINDTODEVICE.
1-Defining two ports
2-Defining two sockets
3-Assigning host ips on them
[code]....
I have 2 LAN ports. one from the motherboard (on board) and the other from a lan card i bought a few days back. one is use for browsing the net, the other for a media player. problem is i cant connect to both the eth0 and eth1 at the same time. i have to disconnect one of them to connect to the other. and this really gets irritating as it doesnt always work as flawlessly as it should. what am i doing wrong?
View 4 Replies View RelatedI have 2 LAN ports. one from the motherboard (on board) and the other from a lan card i bought a few days back. one is use for browsing the net, the other for a media player.
problem is i cant connect to both the eth0 and eth1 at the same time. i have to disconnect one of them to connect to the other. and this really gets irritating as it doesnt always work as flawlessly as it should. what am i doing wrong?
Output of "ifconfig":
Quote:
I'm on ubuntu desktop 10.10 64 bit.
I have a hardware device with two ethernet ports, eth0 and eth1 running Centos 5. Basically my goal is to forward packets from eth0->eth1 and eth1->eth0 as well as get a copy of these packets for analysis. If I set IP routing to do the forwarding then I won't get a copy of the packets for analysis.
View 3 Replies View RelatedI've just setup Fedora 10 x64 on a Supermicro 7045 with dual nic; I setup a web site and ran into a strange problem; I can't see my website from outside my LAN; checking IP on Internet it sees my IP as coming for my dynamic IP (IP of router/switch) and not my static IP.
eth0: Static IP
eth1: Dynamic IP
These are standard Intel 82563EB Dual-Port Gigabit Ethernet Controller.
Is there a way to specify the order in which it sees the nic ports?
I'm wonder if I can mix Static and Dynamic IP's; on the outside they resolve to a static IP; the dynamic one shows up as my router/switch IP; but it allows me to access my DHCP computers; this isn't a web server; but a development machine for writing PHP apps.
Where 123.123.123.3 is my static IP address.
I should mention that nmap -v -p 80 123.123.123.3 shows an open port on 80
My VirtualHost is setup like:
Problem: 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
[Code]....
I cannot get static addresses to work on eth0 and eth1. eth0 seems to use DHCP while eth1 uses the static information. Sometimes the static info is used but the interfaces get the addresses reversed.
From /etc/sysconfig/network
NETWORKING=yes
HOSTNAME=mosaic
[code]....
The problem is that samba shares files easily on eth0 while on eth1, every file gives a read error.
My config file is attached.
Code:
[global]
workgroup = WORKGROUP
server string = %h server (Samba, Ubuntu)
dns proxy = no
[Code].....
I need to setup two ethernets in my Centos box. OK no problem both ethernet and 1 virtual works perfect. eth0, eth1 and eth1:0. I'm trying to set up diferent routes for eth0 and eth1/eth1:0 I need eth0 has a 192.168.1.1 gateway and eth1/eth1:0 192.168.1.100 gateway.I think I've tried almost every thing but always get one gateway for all the eth.These are my config..
/sbin/ifconfig
eth0 Link encap:Ethernet HWaddr 00:XX:XX:XX:XX:XX
inet addr:192.168.1.168 Bcast:192.168.1.255 Mask:255.255.255.0[code]......
5.10 Breezy configured as machine controller. Works great eth0 is a fixed IP to communicate with controller comms board. Not easy at all to alter - the comms board is hard coded to listen on eth0 for commands.
I can use eth1 as the default gateway and ping google.com, etc. But when I now attempt to communicate with the controller with netcat, e.g.
Code: echo !HH | nc 192.168.1.6 80
I obviously never get an answer since the request is passed via eth1. Using the -g option with netcat doesn't work either. I had a look at iptables but it doesn't seem to be able to do what I want. How I can still use eth0 as my communication port to the controller whilst eth1 is the default gateway?
I have two servers on a vlan at my datacentre/colocation and previously both servers had public IPs on their eth0 interfaces. The servers are HP ProLiant DL360s - one is a G4 and one is a G5 The newer G5 is now the LAMP server and the G4 has been retired and I want to repurpose it as an iSCSI target using openfiler freenas or similar.
My G5 has public/static IPs lashed to the eth0 physical interface and the eth1 is not configured to do anything yet. The G4 will have both interfaces available - perhaps one for ssh access from one of my static public IPs and the other to be a private IP on the local vlan. Here is what I am trying to get my head around...
The G5
eth0 - Public IP - full LAMP services on two or three virtual interfaces
eth1 - Private IP 192.168.0.1
The G4
eth0 - Public IP for ssh
eth1 - Private IP 192.168.0.2
Because my traffic between eth1 on these boxes is via private IPs on the local private vlan it doesn't add to my quota for bandwidth. How do I go about configuring the routing and gateways and other aspects of this so that I can run a private IP space network between the eth1s and still serve the outside world from the eth0s...
I am afraid that if I assign the private IPs to the eth1 interfaces the routing may either not work or interfere with the access to the production internet facing interfaces (eth0s).
im trying to setup eth0 with subdevice eth0.0 and eth0.99 to come up at boot
eth0 is dhcp clint
eth0:0 is static ip
eth0.99 is 802.1q vlan interface
/etc/network/interfaces
Code:
auto lo
[Code]....
I'd like to ask you all for a simple thing on Slackware that I dont know how to do under RHEL 5.4.
Under Slackware 12.2 it is easy to change eth0 to eth1.
This should be done in file: /etc/udev/rules.d/75-network-devices.rules:
Code:
Code:
Well, under Red Hat it looks slight diffrent. It looks like RHEL does not use udev ( correct me if i am wrong but there is no simillar file in /etc/udev/rules.d and cant see any script in /etc/init.d/).
I have found that all NIC configuration is stored in /etc/sysconfig/netwotk-scripts/ifcfg-ethx.
On this file it is possible to place varible: HARDWARE=
However after reboot it doesnt work. So, my question is - how to assign eth[number] to specified MAC-addr ?
I have a Linux machine with two Ethernet cards both using the Intel e1000 driver. lspci reports different models of Ethernet cards, but I can't tell which is eth0 and which is eth1. Other than turning off the machine and reading the chips, how can I tell which model is eth0 and which is eth1?
View 3 Replies View RelatedI have a server with two gig-e ports, eth0 and eth1. When eth0 the only port that is connected to a network it will get online ok. It is the port used to connect to the internet. eth1 is used for PXE / TFTP / DHCP server for a private network. eth1 will serve ip's ok. The issue is when both are connected at the same time. eth0 to our LAN, and eth1 to the private network; eth0 does not ping or load pages in firefox. eth1 will still serve ips'. Is there any reason why eth0 would stop working if eth1 is connected to a switch? eth0 ip is 192.168.10.110, eth1 ip is 192.168.1.1 different subnets.
View 6 Replies View RelatedI've noticed that when Linux boots on different machines or with different versions, the network card is assigned to eth0 or to eth1, when there is only one network card. What is the difference and is there any way to tell which one it will be for any machine or version?
View 2 Replies View RelatedI installed Slackware 13.37 console only.
I have two ethernet cards.
I want to change eth1 to eth0 and eth0 to eth1, because I have some old firewall script and I need eth0 be eth1, because of routing internet. My ISP close my net connection on MAC adress.
We are currently having a windows virus outbreak in our corporate network, all the it guys using windows machines and they are infected of course.
My question is I have a internet enabled ubuntu 9.10 machine with two nics.
eth0 is for internet and I wanna distribute my internet connection from my other nic.
There are alotta switches and access points in our network but i placed my ubuntu desktop just like the infected windows machine. Everything seems working except other clients internet connections.
How to share internet connection on eth0 to eth1
im a linux noob dont get techy ill die of brain fry im running a craft bukkit minecraft server on my 11.04 ubuntu server. however the server uses my only 10m Ethernet cable that i normaly use for my ps3 (i will NOT go wireless. i hate it (or dont like it)) therefor i found an old PCI NIC in an old computer, its a 10/100 realtek one. ifconfig detects it (after two commands:
Code:
ifconfig eth0 up
dhclient eth0
)
now i need to send the internet to my ps3 too.i know the connection wont be blazing fast but isnt it okay?it musnt interrupt the minecraft server. if you need info just ask. ill try and provide them.
I've noticed that when Linux boots on different machines or with different versions, the network card is assigned to eth0 or to eth1, when there is only one network card. What is the difference and is there any way to tell which one it will be for any machine or version?
View 3 Replies View RelatedI've got a machine running 9.10 with two network interfaces, one being motherboard based (atl1) and the other in a PCI slot (e100). By default at boot the interfaces come up in the wrong order. I'd prefer to have the e100 come up as eth0 instead of eth1. And then have the atl1 come up on eth1 instead of eth0. Both interfaces use static addresses and IP4 routing should be active across them. Where do I configure things to force the specific settings?
View 2 Replies View RelatedI have a linux machine with 2 ethernet ports(eth0 and eth1). eth0 is connected to a router which assigns it an IP address 192.168.1.2. eth1 is connected to a switch and I assigned it an IP address 192.168.1.254 using "ifconfig eth1 192.168.1.254 netmask 255.255.255.0 up". How do I ping eth0 from eth1?
View 5 Replies View RelatedI am using ubuntu cli 10.04 for several different computers with different network cards, any time I plug in my persistent usb (ubuntu installed on usb) to computer the network would not work, when I find out what is up I see that it is up on next eth driver, I cant enter up to 50 or 100 or 500 entry there all the time and same thing with wireless since I use radius authentication its even makes it worse.
So to summarize:
sudo vi /etc/network interfaces
auto eth0 ifup dhcp
iface eth0 inet ...
...
...
auto eth100 ifup dhcp
iface eht100 inet ....
How to keep one entry for all those different computers (one for eth0 and one for wlan0)?
Im setting up a server thats connected to a large network. Now my external ip on the network is static and is 10.0.12.15. What I want is to create a dhcp network using the second port of my box. The first port eth0 goes to my network with the static ip 10.0.12.15 and my second port is connected to a switch with the static ip 192.168.12.1. Now dhcp works fine but none of the boxes that are connected to the internal ip cannot connect to the internet. Iv tried using squid and manual static ip routes. Im not using network manager or anything cause its a command line server.
View 1 Replies View RelatedOnce or twice an hour or every few hours the interface will drop off. When this happens and comes back up and ssh sessions I have open will sit there and lag for 15-20 sec while, I assume, the connection is re-established. Any sessions I have open to the mySQL database will be dropped and I'll be given error messages associated with loosing connection to the SQL server. I have run a constant ping against the server and when the interface seems to drop off I'll get 10 or so host unreachable and it'll then start to reply again. This happens with both eth0 and eth1 on this Dell Poweredge 850 running 11.04. I have done a "sudo lspci -v" on both the server acting up and another Natty box that doesn't have this issue but the same hardware. They both are using the same driver versions though it seems certain options are slightly different between the two.
Working Server:
Code:
04:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5721 Gigabit Ethernet PCI Express (rev 11)
Subsystem: Dell Device 01b6
Flags: bus master, fast devsel, latency 0, IRQ 16
Memory at fe8f0000 (64-bit, non-prefetchable) [size=64K]
Expansion ROM at <ignored> [disabled]
Capabilities: [48] Power Management version 2
Capabilities: [50] Vital Product Data <?>
Capabilities: [58] Message Signalled Interrupts:Mask-64bit+ Queue=0/3 Enable-
Capabilities: [d0] Express Endpoint, MSI 00
Capabilities: [100] Advanced Error Reporting <?>
Capabilities: [13c] Virtual Channel <?>
Kernel driver in use: tg3
Kernel modules: tg3
Broken Server:
Code:
04:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5721 Gigabit Ethernet PCI Express (rev 11)
Subsystem: Dell Device 01b6
Flags: bus master, fast devsel, latency 0, IRQ 16
Memory at fe8f0000 (64-bit, non-prefetchable) [size=64K]
Expansion ROM at <ignored> [disabled]
Capabilities: [48] Power Management version 2
Capabilities: [50] Vital Product Data
Capabilities: [58] MSI: Enable- Count=1/8 Maskable-64bit+
Capabilities: [d0] Express Endpoint, MSI 00
Capabilities: [100] Advanced Error Reporting
Capabilities: [13c] Virtual Channel
Kernel driver in use: tg3
Kernel modules: tg3
I've checked the cable, it's a pre-made with both ends looking good. I even swapped it out for a fresh home made cable and the problem still persists.
I have twe network cards eth0 and eth1. eth0 is connected to internet and eth1 is unusable. So, i'd like to redirect trafic from eth0 to eth1. how can i do it?
View 1 Replies View RelatedI have two network devices :
1. Intel Corporation 82574L Gigabit Network Conncection (Currently eth0, Mac=00:0e:8c:ab:c6:b1)
2. National Semiconductor Corporation DP83815 (Currently eth1, Mac=00:0e:8c:8a:70:62)
I want to change them so that the "Intel" become eth1 device and the "National" become the eth0 device.
I already tried these steps :
1. I disabled the Network Manager and enabled network
2. Edit the /etc/udev/rules.d/70-persistent-net.rules like this
Quote:
3. Change the /etc/sysconfig/network-scripts/ifcfg-eth0 and /etc/sysconfig/network-scripts/ifcfg-eth1 MAC addresses.
4. Reboot
5. After it bootup the Fedora can't recognize the devices, if I do ifconfig -a it shows "eth0_rename with FF:FF:FF:FF:FF:FF mac address".
I have two network interfaces on my computer but only one of them is connected to an Ethernet cable. Until now on every Fedora release, the activated primary interface has been named as eth0 and everything has always worked well without any problem. Recently I switched to Fedora Core 12 and surprisingly I observed that for the first time, my primary interface has been considered by the system to be eth1 instead of eth0. I tried to replace the content of ifcfg-eth0 by ifcfg-eth1, yet system gave me an error that there was MAC address mismatching. I conserved their MAC addresses in their files and just replaced other connection parameters ( such as IP ADDR, NETWORK, NETMASK, etc.) but it did't work. When I do "server network restart", the command blocks.
As I try to install oracle on this system, regarding the fact that oracle requires static network configuration on the primary network interface, I don't know how to proceed in order to set eth0 as my primary interface (or rather set the current eth1 to eth0 because it is actually eth1 that refers to my activated primary network card).Just one more time, I would like to remark, that with previous versions of the Fedora Core, on the same computer (with the very same two network cards) I never had problem and I had installed oracle on the system with success, having the statically configured eth0 correctly detected by the system.
I want to use old devices names eth0, eth1 etc. instead of default OpenSuSE (11.1)eth_s0_0 etc. There is no firewall, no devices management via NetworkManager, static IP address.
1) to edit /etc/udev/rules.d/70-persistent-net.rules and insert eth0ð1 instead of eth_s0_0 & eth_s0_1
2) To rename /etc/sysconfig/network/ifcfg_eth_s0_0 ( and s0_1) to ifcfg_eth0 and ifcfg_eth1 and then reboot ?