General :: Ping Two Ethernet Card On The Same Computer And On The Same Subnet
Jul 6, 2011
I have two NIC Ethernet card (eth1 and eth2) on the same computer (linux) connected by a cross cable.
The two interfaces are on the same subnet :
eth1 : 192.168.200.1 255.255.255.0
eth2 : 192.168.200.2 255.255.255.0
Then i add a route for each interface :
route add -net 192.168.200.0 netmask 255.255.255.0 eth1
route add -net 192.168.200.0 netmask 255.255.255.0 eth2
Finally,i'm trying to ping :
ping 192.168.200.1 -I eth2 or ping 192.168.200.2 -I eth1
Ping command reaches error : Destination Host Unreachable
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Aug 23, 2010
I have linux suse installed on VMware, my pc is running Windows XP. I have a switch connected to my ethernet card (also through console cable). When I am on windows I can ping the switch, but from linux I can't. My ethcard is "Bridged" on VMware, I can ping 127.0.0.1.
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Apr 7, 2011
there are two computer
wireless internet accessible notebook.
desktop with no wireless card (but just normal lan card).
I connect two computer with lan cable, and I want to use internet in desktop computer through the notebook's wireless lan
what kind of setting do I have to do?
desktop's OS is Ubuntu, and notebook's one are Ubuntu, Windows XP.
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Jul 4, 2011
I installed Redhat Enterprise linux server5. it has two LAN card and two subnet connected to these two LAN card. i can browse network from these two network easily. But i created VLAN on one network card.Now i cant browse network from these VLAN subnet.
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Nov 4, 2010
how to write a command (for loop) that would ping a Class C subnet to make it so that it only replies once and does not show the statistics?
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Apr 23, 2010
I installed apache2 on my Ubuntu machine and I am trying to access the server from another subnet. The server is connected using ethernet and has a static ip address. I can ping from the server to any machine in the other subnet but non of the machine on that subnet can ping the server. iptables does not seem to be running
Code:
# service iptables status
iptables: unrecognized service
and its rules are
Code:
# iptables -L
Chain INPUT (policy ACCEPT)
target prot opt source destination
Chain FORWARD (policy ACCEPT)
target prot opt source destination
[code]....
What is preventing my machine from being accessed from the other subnet?
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Mar 15, 2010
Step 1 : In Hyper-v Machine i have created two Virtual Ports.
Step 2 : Now for these two diff ports two ip address with different subnet mask(e.g 192.168.9.19 and 192.16.9.20)have been assigned(and have checked using ifconfig).
Step 3 : In Host machine i have added one subnetmask for one machine next one for another machine,however i m not able to ping both the ports from either of the machines having static ip 192.168.9.13 or having ip 192.16.9.107.
Step 4 : If i add same subnet mask for both machine it is pinging properly between 2 machines.
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Jul 26, 2011
I am using centOS 5.0. After I change from DHCP to static IP address, I cannot ping hosts on the same subnet. The error message says destination host unreachable. Before I made the changes I was able to ping and now even I change it back to DHCP I still cannot ping with the same destination host unreachable message. The centOS is running on VMware on a Windows host.
ifconfig shows
eth0 Link encap:Ethernet HWaddr 00:0C29:A1:9A:10
inet addr: 192.168.0.202 Bcast:192.168.0.255 Mask: 255.255.255.0
inet6 addr ......
After pinging 192.168.0.106 (106 is on and other host can ping it), arp -a shows ? (192.168.0.106) at <incomplete> on eth0 I tried different ways by disabling the firewall and and disabling SE protection. No Luck.
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Feb 17, 2010
I got a VPN Setup, issue is, I cannot ping or talk to any other computer through an external source without typing in the FQDN so for example to ping host: chucknorris
ping chucknorris.work.com.au
rather then just typing:
ping chucknorris
I do know I'm missing an arguments in my pptpd_options file, but does anyone know what?
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Feb 8, 2011
I am basically wanting to use my Ubuntu 10.10 computer as a router. Note: Before you say just get a router please note that I am poor/cheap. I have two ethernet connections and one wireless connection on my netbook. I want to share the internet connection that is going into one of the ethernet cards through the other ethernet card and the wireless card.
DSL-->1sr Eth --> 2nd Eth (currently works)
DSL-->1sr Eth --> Wireless Card (Adhoc) <--(connects with limited connectivity AKA no internet)
The 2nd Ethernet card already has working internet, but when I connect to the Wireless card (through an Adhoc network), it cannot get an IP (I believe).
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Jun 25, 2010
I have to ubuntu machine (9.10 and 10.4) with a openvpn tunnel between them.This is the situation:
Code:
NetworkA 192.168.0.0/24
|
UbuntuA br0:192.168.0.3 (openvpn bridge between eth0 and tap0)[code].....
UbuntuA has one only interface etho and there are two openvpn instance: one bridge istance with br0 and another instance with tun0.
UbuntuA is not the gateway for networkA. UbuntuB is the gateway for NetworkB.I need to comunicate between pc on networkB e those on networkA.This is the "ping situation" (no pc tested has an active firewall):
ubuntuA vs ubuntuB: OK
ubuntuB vs ubuntuA: OK
pc on NetworkA vs ubuntuA and ubuntuB: OK[code].....
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Feb 22, 2011
I have installed fedora core 8 on my system. But i am unable to use LAN connection. here are the results of some of the commands which give error messages
[root@localhost ~]# lspci | grep -i ether
00:19.0 Ethernet controller: Intel Corporation Unknown device 10f5 (rev 03)
[root@localhost ~]# uname -a
[code]....
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Jun 22, 2010
In my red hat Linux machine there was a Lan card using eth0. IP is asign to that network card and it is functioning properly. I add another ethernet card in my linux machineit was detacted and when i use the commandQuote:[root@localhost root] # ifconfig -ait show me both eth0 and eth1 lan cards.I can see Ip address in my eth1 ethernet card but When I enter into
Code:
[root@localhost root] # cd /etc/sysconfig/network-scripts
and i use ls command it only show me the file ifcfg-eth1 and with
[code]...
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Sep 1, 2010
I have a computer that I use for practically everything. In the same room I have a second computer that I use purely for trialing Linux distributions, It currently has Debian, gNewSense and Kubuntu on it with Grub to choose between. This computer has no keyboard / mouse / monitor, but it has directly wired ethernet to the home network. Is there any way I can set it to be remotely controlled from before / during grub so I can choose from the other computer which to run? I realise I can just crawl behind the desk and unplug the keyboard / mouse / monitor, but I don't particularly want to every time I reboot into a different distro. I also realise that remote access during boot is a security risk so is there a way of allowing only one MAC address to do the controlling?
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Jun 21, 2010
I install RHEL 5.1 on my system. But my Ethernet card is not detected. I found my Ethernet card is of "ATTANSIC Technology corp L1 Gigabit Ethernet Adapter(rev b0). I already downloaded the driver. Someone tell me step by step process, how to install this driver over RHEL 5.1.
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Jun 23, 2010
I want to know that in my Linux box under "Network Configuration....>Devices" i can see Device eth1 and Nickname eth0.
The ambiguity in my mind is when we want to down network interface we should call it by device name or nick name
Example
Or
Code:
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Jul 22, 2011
I have TWO L3 + router switch (say switch1 and switch2). I created VLAN100 with VLAN ID 100 in both the switches. I created router 192.168.1.1/24 in Switch1. I created router 192.168.2.1/24 in Switch2. Switch1 is connected with 1.x/24 PCs. PCs are configured with 1.1 gateway. Switch2 is connected with 2.x/24 PCs. PCs are configured with 2.1 gateway. Both Switch1 and switch2 are connected by a trunk to carry VLAN100 data.
1)I have few PCs of 1.x connected to say Switch1 Is it possible for PC with IP 192.168.1.100(x) to ping PC with IP 192.168.2.100(y)?What are the configuration required in both switches to make them communicate ? All the device in both the subnets should ping/communicate with each other.
2)Move PC (192.168.1.100) to switch2. Move PC (192.168.2.100)to switch1.What will happen when PC(1.100) ping (2.100) and vice versa?What will happen when PC(say 1.80 in switch1) pings PC (say 1.100 in switch2) and vice versa? What will happen when PC(say 1.80 in switch1) pings PC (say 2.100 in switch1) and vice versa?
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Mar 24, 2010
My Eth0 has 3 virtual Ethernet (eth0:1, eth0:2, eth0:3)
Eth0 -> 202.1.1.1
Eth0:1 -> 202.1.1.2
Eth0:2 -> 202.1.1.3
Eth0:3 -> 202.1.1.4
I am unable to ping them (202.1.1.2 - 202.1.1.4) from Client's PC.
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Jun 8, 2010
I use an nVidia nforce MCP73 ethernet card on Red Hat Enterprise Linux. It is not getting detected and hence I'm unable to configure my network.
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Jun 15, 2011
While installing my redhat distro in VMware 6, its giving an error message that ethernet will be disconnected.
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Jul 19, 2011
I am unable to connect to the internet at work through the ethernet, previously working. I am not sure of the origin of this problem -- the result of an update or something that I did to the network settings.
In the NetworkManager applet is says Auto Ethernet is connected but I can't ping anything by name or ip address.
The wireless still works without any problem.
I have tried following some of the other threads on similar issues but the fixes proposed on them have not helped to date. And I may have mangled some of the settings files somewhat.
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Dec 4, 2010
Just installed Fedora 14 from the Live CD i686 on my Dell Inspiron 1521. I can't connect to the SpeedTouch 585 on either wireless broadcom card or the wired Ethernet card.
I can connect to it from the same Laptop on the Vista which is on dual boot on the same laptop.
Further confusing is that I ran Fedora 14 and connected to another SpeedTouch today.
Already checked the Channel on the wireless nic and it's on the same one as the SpeedTouch.
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Sep 23, 2010
I have a Linux box being used as a firewall with Fedora 10 and shorewall 4.2.10. Secondary IPs are loaded on the WAN (eth1)card through Shorewall NAT and Rules file. The problem is that if there is a network hickup or if the circuit bounces, the primary IP comes back but I have to reload Shorewall to get the secondary ips back. Is there a way so that they can automatically reload or just not go away if the connection bounces?
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Jun 27, 2011
please anybody tell me how to check the availability of ethernet card in redhat 5.2 without using screw driver.
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Oct 14, 2009
So I keep reading that bonding ethernet devices is supposed to be easy. I have followed several tutorials and tried a few things on my own, and I can't seem to get it right. I currently have a setup that allows me to ping internally on my network, but when I try to ping externally I get the error:
connect: Network is unreachable
Before I bonded the interface my connection worked fine. Here are my config files. I am running centos 5.3 on a virtual machine.
/etc/sysconfig/network-scripts/ifcfg-bond0
Code:
DEVICE=bond0
BOOTPROTO=none
ONBOOT=yes
NETWORK=192.168.1.0
NETMASK=255.255.255.0
IPADDR=192.168.1.211
USERCTL=no
/etc/sysconfig/network-scripts/ifcfg-eth1
Code:
# Advanced Micro Devices [AMD] 79c970 [PCnet32 LANCE]
DEVICE=eth1
BOOTPROTO=none
ONBOOT=yes
HWADDR=00:0c:29:88:59:47
MASTER=bond0
SLAVE=yes
USERCTL=no
/etc/sysconfig/network-scripts/ifcfg-eth0
Code:
# Advanced Micro Devices [AMD] 79c970 [PCnet32 LANCE]
DEVICE=eth0
MASTER=bond0
SLAVE=yes
BOOTPROTO=none
HWADDR=00:0c:29:88:59:3d
ONBOOT=yes
/etc/modprobe.conf
Code:
alias eth0 pcnet32
alias scsi_hostadapter mptbase
alias scsi_hostadapter1 mptspi
alias scsi_hostadapter2 ata_piix
alias eth1 pcnet32
alias bond0 bonding
options bond0 mode=0 miimon=100
output of cat /proc/
Code:
Bonding Mode: load balancing (round-robin)
MII Status: up
MII Polling Interval (ms): 100
Up Delay (ms): 0
Down Delay (ms): 0
Slave Interface: eth0
MII Status: up
Link Failure Count: 0
Permanent HW addr: 00:0c:29:88:59:3d
Slave Interface: eth1
MII Status: up
Link Failure Count: 0
Permanent HW addr: 00:0c:29:88:59:47
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Jul 15, 2011
I am using an virtual machine. where I need to ping from one machine to another. earlier I was able to ping. But after going to google.com once, I cannot ping back to this machine.
But if I gave ping -I eth1 <IP> then I can ping.
I cannot install any package, so tell me solution which includes not installing any package.
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Nov 9, 2009
I am using FC9 and internet is working fine on it.
Well, I ping to google, it is resolving but if I ping by hostname to other LAN computers. it gives error : unknown host.
But if i ping with IP address it is pinging.
NOTE :
1) My firewall is acting as a dns server and other windows systems are resolving it.
2) FC9 firewall is disabled.
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May 13, 2011
Even ping google's ip address doesn't work. unknown host error using backtrack4 able to browse net with these settings.
My network settings:
What's the problem with these settings...
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Feb 23, 2011
i have a doubt about NS3, can use the actual network card of my computer in the simulator NS3, that is, if my network card can behave as programmed into the simulator.
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Apr 30, 2010
I installed Fedora 12 on my laptop. I have a wireless connection to the internet that works fine, I attached an Ethernet cable from this laptop to a windows machine. There is a green light.
I can ping my localhost. I can ping the windows machine using it internal IP address via the router. However, the eth0 IP address does not work when I ping to it from the windows nachine. Also, I cannot ping to the windows machine using the IP address associated with the Ethernet connection.
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