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April 2008

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Subject:
From:
William Shu <[log in to unmask]>
Reply To:
William Shu <[log in to unmask]>
Date:
Thu, 3 Apr 2008 04:05:38 -0700
Content-Type:
text/plain
Parts/Attachments:
text/plain (456 lines)
--- William Shu <[log in to unmask]> wrote:

> --- Marek Mahut <[log in to unmask]> wrote:
> 
> > Hello William,
> > 
> > William Shu wrote:
> > > Hi,
> > > 
> > > I have secured a network cable (rj45 heads) to link a
> laptop
> > > directly to a desktop machine which has *no* access to a
> > > network. The desktop has TWO network cards and an rj11
> > socket
> > > (for telephone). The heads of the network cable have been
> > > rewired so that a switch or hub is *not* used. The
> > technician
> > > tested the cable by pinging between 2 Windows XP machines,
> > but
> > > knows nothing of linux and unix-based machines.
> > Unfortunately,
> > > when I do a ping from laptop to desktop or vice-versa, I
> get
> > the
> > > message "Destination Host Unreachable" (See sample output
> > > below).
> > > 
> > > (I know next to nothing about networks and so I hope the
> > > questions below still make sense!)
> > > 
> > > QUESTION 1: How should I go about having the desired
> > > peer-to-peer connection, without trying to use an Internet
> > > Service Provider, or start managing a local area network.
> I
> > > understand linux is a "network operating system" and so
> > nothing
> > > special needs to be done. That is, the desired service
> (ftp,
> > > ssh, etc) is requested and used, if it is set up on both
> > > machines.
> > 
> > If you are connected with a crossover-cable (or have a
> network
> > card that 
> > support crossover simulation), you have to only setup IP
> > addresses of 
> > the same local vlan. For example 192.168.0.1 for your
> desktop
> > interface 
> > and 192.168.0.2 for your laptop. You should be able to ping
> > each other 
> > without having a route.
> 
> Yes, this is what I think I did. Later, I will verify the
> connection.

I have now got the details of:
	route -v
and:
	/sbin/ifconfig -a

on both machines. I notice there is a destination, 169.254.0.0,
(under route -v) that I do not remember ever using!


======== [ Details on machine tiny: ] ===========


Statically set IP addresses on [desktop] tiny (found under the
General tab of system-config-network):
Address:                 192.168.0.1
Subnet mask:             255.255.255.0
Default Gateway address: 192.168.0.1



[root@tinysl50 wss]#  /sbin/route -v
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref
   Use Iface
[root@tinysl50 wss]#  /sbin/route -v
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
default         doit            0.0.0.0         UG    0      0  
     0 eth0
[root@tinysl50 wss]# /sbin/ifconfig -a
eth0      Link encap:Ethernet  HWaddr 00:50:DA:5D:77:A6  
          inet addr:192.168.0.1  Bcast:192.168.0.255 
Mask:255.255.255.0
          inet6 addr: fe80::250:daff:fe5d:77a6/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:34 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:0 (0.0 b)  TX bytes:8155 (7.9 KiB)

eth1      Link encap:Ethernet  HWaddr 00:0E:2E:2F:C8:B7  
          BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:35 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 b)  TX bytes:8165 (7.9 KiB)
          Interrupt:9 Base address:0xaf00 

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:2761 errors:0 dropped:0 overruns:0 frame:0
          TX packets:2761 errors:0 dropped:0 overruns:0
carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:4050484 (3.8 MiB)  TX bytes:4050484 (3.8 MiB)

peth0     Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF  
          UP BROADCAST NOARP  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
          collisi[root@tinysl50 wss]# ping 192.198.0.3
PING 192.198.0.3 (192.198.0.3) 56(84) bytes of data.
From 192.168.0.1 icmp_seq=2 Destination Host Unreachable
From 192.168.0.1 icmp_seq=3 Destination Host Unreachable
From ons:0 txqueuelen:1000 
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)
          Interrupt:5 Base address:0x6e80 

sit0      Link encap:IPv6-in-IPv4  
          NOARP  MTU:1480  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:0 
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

veth1     Link encap:Ethernet  HWaddr 00:00:00:00:00:00  
          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:0 
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

veth2     Link encap:Ethernet  HWaddr 00:00:00:00:00:00  
          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:0 
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

veth3     Link encap:Ethernet  HWaddr 00:00:00:00:00:00  
          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:0 
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

vif0.0    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF  
          inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link
          UP BROADCAST RUNNING NOARP  MTU:1500  Metric:1
          RX packets:63 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:15839 (15.4 KiB)  TX bytes:0 (0.0 b)

vif0.1    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF  
          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:0 
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)
[root@tinysl50 wss]# ping 192.198.0.3
PING 192.198.0.3 (192.198.0.3) 56(84) bytes of data.
From 192.168.0.1 icmp_seq=2 Destination Host Unreachable
From 192.168.0.1 icmp_seq=3 Destination Host Unreachable
From 
vif0.2    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF  
          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:0 
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

vif0.3    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF  
          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:0 
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

xenbr0    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF  
          UP BROADCAST RUNNING NOARP  MTU:1500  Metric:1
          RX packets:63 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:14957 (14.6 KiB)  TX bytes:0 (0.0 b)
[root@tinysl50 wss]# ping 192.168.0.3
PING 192.168.0.3 (192.168.0.3) 56(84) bytes of data.
From 192.168.0.1 icmp_seq=1 Destination Host Unreachable
From 192.168.0.1 icmp_seq=2 Destination Host Unreachable
From 192.168.0.1 icmp_seq=3 Destination Host Unreachable

--- 192.168.0.3 ping statistics ---
5 packets transmitted, 0 received, +3 errors, 100% packet loss,
time 4012ms
, pipe 3
[root@tinysl50 wss]# ping 192.168.0.1
PING 192.168.0.1 (192.168.0.1) 56(84) bytes of data.
64 bytes from 192.168.0.1: icmp_seq=1 ttl=64 time=0.239 ms
64 bytes from 192.168.0.1: icmp_seq=2 ttl=64 time=0.215 ms
64 bytes from 192.168.0.1: icmp_seq=3 ttl=64 time=0.219 ms

--- 192.168.0.1 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 1998ms
rtt min/avg/max/mdev = 0.215/0.224/0.239/0.016 ms
[root@tinysl50 wss]# 




======== details on hp laptop ========



Statically set IP addresses on hp laptop (found under the
General tab of system-config-network):
Address:                 192.168.0.3
Subnet mask:             255.255.255.0
Default Gateway address: 192.168.0.1



[root@hpsl50 wss]# /sbin/route -v
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
default         doit            0.0.0.0         UG    0      0  
     0 eth0
[root@hpsl50 wss]# /sbin/ifconfig -a
eth0      Link encap:Ethernet  HWaddr 00:16:D4:3A:20:40  
          inet addr:192.168.0.3  Bcast:192.168.0.255 
Mask:255.255.255.0
          inet6 addr: fe80::216:d4ff:fe3a:2040/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:35 errors:0 dropped:0 overruns:0 frame:0
          TX packets:77 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:8165 (7.9 KiB)  TX bytes:9946 (9.7 KiB)

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:1854 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1854 errors:0 dropped:0 overruns:0
carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:2868320 (2.7 MiB)  TX bytes:2868320 (2.7 MiB)

peth0     Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF  
          inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link
          UP BROADCAST RUNNING NOARP  MTU:1500  Metric:1
          RX packets:35 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:8165 (7.9 KiB)  TX bytes:0 (0.0 b)

sit0      Link encap:IPv6-in-IPv4  
          NOARP  MTU:1480  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:0 
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

veth1     Link encap:Ethernet  HWaddr 00:00:00:00:00:00  
          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:0 
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

veth2     Link encap:Ethernet  HWaddr 00:00:00:00:00:00  
          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:0 
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

veth3     Link encap:Ethernet  HWaddr 00:00:00:00:00:00  
          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:0 
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

vif0.0    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF  
          inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link
          UP BROADCAST RUNNING NOARP  MTU:1500  Metric:1
          RX packets:77 errors:0 dropped:0 overruns:0 frame:0
          TX packets:35 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:9946 (9.7 KiB)  TX bytes:8165 (7.9 KiB)

vif0.1    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF  
          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:0 
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

vif0.2    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF  
          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:0 
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

vif0.3    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF  
          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:0 
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

xenbr0    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF  
          UP BROADCAST RUNNING NOARP  MTU:1500  Metric:1
          RX packets:112 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:16543 (16.1 KiB)  TX bytes:0 (0.0 b)

[root@hpsl50 wss]# 



> 
> > 
> > > QUESTTION 2: How can I install a wireless router on the
> > above
> > > desktop,  which has a modem card, but must not be linked
> to
> > > either the telephone or the internet!. The router (a
> > TRENDnet
> > > TEW432BRP) has a windowsXP and requires:
> > >     * A Web browser: Internet Explorer (5.0 or above) or
> > > netscape Navigator (4.7 or aove),
> > >     * Computer With network adapter installed
> > >     * Broadband internet
> > >     * Installed cble or DSL modem (Statitc/Dynamic/PPPoE
> > > connection)
> > 
> > What should be the purpose of this wireless router? To
> connect
> > the 
> > laptop using wifi to your desktop?
> 
> Yes, that is the idea. Different laptops in range should be
> able
> to connect without hassle.
> 
> > 
> > As Connie said, please provide us with the output of
> following
> > commands:
> > 
> > # /sbin/route -va
> > # /sbin/ifconfig -a
> > #
> 
> I will supply the information Connie and others requested
> after
> I must have tried out the suggestions of Paul.
> 
> > 
> > And also, drawing a schema of your idea of the network would
> > be useful. 
> 
> How you mean schema? a diagrammatic representation? a
> description?
> 
> > If you're new to linux world, I recommend you good
> > documentation at 
> > http://tldp.org/ -- it helped me a lot when I've started
> with
> > linux.
> > 
> > > Thanks in advance,
> > > 
> > > William.
> > > 
> > > -----------------[ Sample output ]--------------------
> > > [wss@hpsl50 ~]$ ping tinysl50.doit
> > > PING tinysl50.doit (192.168.0.1) 56(84) bytes of data.
> > > From hpsl50.doit (192.168.0.3) icmp_seq=1 Destination Host
> > > Unreachable
> > > From hpsl50.doit (192.168.0.3) icmp_seq=2 Destination Host
> > > Unreachable
> > > From hpsl50.doit (192.168.0.3) icmp_seq=3 Destination Host
> > > Unreachable
> > > From hpsl50.doit (192.168.0.3) icmp_seq=4 Destination Host
> > > Unreachable
> > > From hpsl50.doit (192.168.0.3) icmp_seq=5 Destination Host
> > > Unreachable
> > > From hpsl50.doit (192.168.0.3) icmp_seq=6 Destination Host
> > > Unreachable
> > > 
> > > --- tinysl50.doit ping statistics ---
> > > 8 packets transmitted, 0 received, +6 errors, 100% packet
> > loss,
> > > time 7025ms
> > > , pipe 3
> > > 
> > > 
> > > [wss@hpsl50 ~]$ cat /etc/hosts
> > > # Do not remove the following line, or various programs
> > > # that require network functionality will fail.
> > > 127.0.0.1       localhost.localdomain   localhost      
> > hpsl50
> > > ::1     localhost6.localdomain6 localhost6
> > > 192.168.0.3     hpsl50.doit     hpsl50
> > > 192.168.0.1     doit    doit
> > > 192.168.0.1     tinysl50.doit   tinysl50.doit
> > > [wss@hpsl50 ~]$ 
> > 
> > Regards,
> > 
> > -- 
> > Marek Mahut              
> > https://fedoraproject.org/wiki/SIGs/Astronomy/
> > Fedora Project                                  
> > http://www.jamendo.com/
> > 
> > 
> 
> 
> 
>      
>
____________________________________________________________________________________
> You rock. That's why Blockbuster's offering you one month of
> Blockbuster Total Access, No Cost.  
> http://tc.deals.yahoo.com/tc/blockbuster/text5.com
> 



      ____________________________________________________________________________________
You rock. That's why Blockbuster's offering you one month of Blockbuster Total Access, No Cost.  
http://tc.deals.yahoo.com/tc/blockbuster/text5.com

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