Network is unreachable

confidential007 · 06-16-2004, 08:17 PM

I am running FC2 on a desktop and Knoppix 3.4 (Live CD, not harddrive) on a laptop and am trying to network the two with a crossover cable. I want to image my harddrive on my laptop before I use QTParted to make room for Linux. I have the /etc/exports set up. I currently reads

Code:

/home/confidential/image

I start up the nfs service on the desktop using /etc/rc.d/init.d/nfs start. In the Network applet, I have the IP of the NIC in my desktop set up as 192.168.0.1 and the name as main.home. I have my user account on both computers in the users group with a GroupID of 100. When I type

Code:

mount -t nfs 192.168.0.1:/home/confidential/image /home/Knoppix/image

I get the error

Code:

mount: RPC: Remote system error - Network is unreachable

How can I get my two computers to communicate? I figured that this would be easier than getting two XP Home computers to communicate since Linux was made for a network.

MS3FGX · 06-16-2004, 08:50 PM

Quote:

How can I get my two computers to communicate? I figured that this would be easier than getting two XP Home computers to communicate since Linux was made for a network.

So was the Windows NT kernel, but Windows misconceptions aside...

Are you sure it is a crossover cable, and not a patch cable? If it is a crossover cable, did you set both machines up with IP addresses in the same subnet and range?

Can you ping one machine from the other?

confidential007 · 06-17-2004, 02:49 PM

I am sure that it is a crossover cable because I split it open and redid the wiring myself.

I've never setup my own network before, so I am not sure what you mean when you talk about the IP addresses being in the same subnet and range.

I have been successful in pinging the machines using Windows, but I don't know how to ping machines in Linux.

confidential007 · 06-17-2004, 03:41 PM

After playing with some settings, the mount command now produces the error

Code:

mount: RPC: Remote system error - No route to host

This appears to be a step in the right direction since the network must now be reachable.

Here is a rundown of all of my settings:

In Knoppix 3.4, I ran the Network Card Configuration utility (netcardconfig). I answered no to use DHCP broadcast since I dont have a DHCP server on my "network".
IP Address: 192.168.0.2
Network Mask: 255.255.255.0
Broadcast Address: 192.168.0.255
Default Gateway: 192.168.0.254
Nameserver(s): 192.168.0.254

netcardconfig produces the following output:

Code:

ifconfig eth0 192.168.0.2 netmask 255.255.255.0 broadcast 192.168.0.255 up
route add default gw 192.168.0.254
SIOCADDRT: File exists
auto 1o eth0
Setting Nameserver in /etc/resolv.conf to 192.168.0.254
Done.

In FC2:
----In the Network Configuration applet:
--------DNS tab:
------------Hostname: main.home
------------Primary DNS: 209.151.160.51 (my ISP's DNS server)
------------Secondary DNS:
------------Tertiary DNS:
------------DNS Search Path:
--------Hosts tab:
------------IP: 192.168.0.1
------------Name: MAIN
------------Aliases:
--------General tab for eth0:
------------IPv6 enabled
------------Manual IP Address Settings:
----------------Address: 192.168.0.1
----------------Subnet mask: 255.255.255.0
----------------Default gateway address: 192.168.0.254
Sorry for the formatting, but spaces don't work, I can't use TABs, and I don't want to format it as code

mermxx · 06-17-2004, 05:11 PM

u can use the ping command in a terminal window and use ctrl - c to close.
a good list of ping commands can be found at http://www.computerhope.com/unix/uping.htm
but it would seem that the network ip addresses and isp addresses need a bit more attention.....if nobody get backs to u with more today will offer more help tomorrow as just browsing through quickly :-)

confidential007 · 06-18-2004, 12:33 PM

I tryed the ping command. last night. I was able to have each computer ping its own IP address, meaning that the ethernet interfaces had been brought up properly. However, when I tryed to ping the other computer, all of the packets were lost. I guess that there must be something wrong with some of my network parameters. Can someone help me sort them out and fix the problem?

Oxyacetylene · 06-18-2004, 12:44 PM

What is the IP address, subnet mask, and default gateway of the 2 machines? use the ifconfig and route -F commands to get the info...

confidential007 · 06-18-2004, 07:45 PM

Here is the information from my FC2 desktop:

Code:

[root@main sbin]# ./ifconfig
eth0      Link encap:Ethernet  HWaddr 00:07:95:EB:48:4C
          inet addr:192.168.0.1  Bcast:192.168.0.255  Mask:255.255.255.0
          inet6 addr: fe80::207:95ff:feeb:484c/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:6 errors:0 dropped:0 overruns:0 frame:0
          TX packets:9 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:360 (360.0 b)  TX bytes:546 (546.0 b)
          Interrupt:11 Base address:0xd800

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:1592 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1592 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:1986584 (1.8 Mb)  TX bytes:1986584 (1.8 Mb)

[root@main sbin]# ./route -F
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
192.168.0.0     *               255.255.255.0   U     0      0        0 eth0
169.254.0.0     *               255.255.0.0     U     0      0        0 eth0
127.0.0.0       *               255.0.0.0       U     0      0        0 lo
default         192.168.0.254   0.0.0.0         UG    0      0        0 eth0

and here is the information from my Knoppix 3.4 laptop after running netcardconfig with no DHCP and the defaults:

Code:

root@ttyp0[knoppix]# ifconfig
eth0      Link encap:Ethernet  HWaddr 00:03:25:10:89:1D
          inet addr:192.168.0.2 Bcast:192.168.0.255 Mask:255.255.255.0
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)
          Interrupt:9 Base address:0x1c00

lo        Link encap:Local Loopback
          inet addr:127.0.0.1 Mask:255.0.0.0
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:6 errors:0 dropped:0 overruns:0 frame:0
          TX packets:6 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:300 (300.0 b)  TX bytes:300 (300.0 b)

root@ttyp0[knoppix]# route -F
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
192.168.0.0     *               255.255.255.0   U     0      0        0 eth0
default         192.168.0.254   0.0.0.0         UG    0      0        0 eth0

Oxyacetylene · 06-18-2004, 08:08 PM

Do you have any sort of firewall rules that could be blocking the traffic? You have both machines in the same subnet so that part is fine.

confidential007 · 06-18-2004, 09:05 PM

I have disabled the firewall on my FC2 machine. I do not know if a firewall is operating on the Knoppix machine. If it is, I don't know how to turn it off.

Oxyacetylene · 06-19-2004, 03:06 PM

you could try adding a route to each machine to the specific IP address of the other and using its own NIC as the gateway for that IP. If that doesn't work then I would try using two regular patch cables plugged into a hub or switch. I'm not doubting your cable, but it would be worth trying a different one, or hooking them up to a hub or switch instead.