Or, connect two PCs to an network Hub or a Bridge for HW connection. Charlie X. Liu Sensoray Company, Inc. (http://www.sensoray.com) 7313 SW Tech Center Dr. Tigard, OR 97223 -----Original Message----- From: linux-net-owner@xxxxxxxxxxxxxxx [mailto:linux-net-owner@xxxxxxxxxxxxxxx]On Behalf Of Guy Sent: Wednesday, September 14, 2005 5:59 AM To: stephanwehner@xxxxxxxxx; linux-net@xxxxxxxxxxxxxxx Subject: RE: Connect two PC's Normally you need a special cable to connect 2 computers directly. The cable is called a cross-over cable. Some NICs don't require cross-over cables. > -----Original Message----- > From: linux-net-owner@xxxxxxxxxxxxxxx [mailto:linux-net- > owner@xxxxxxxxxxxxxxx] On Behalf Of Stephan Wehner > Sent: Wednesday, September 14, 2005 8:13 AM > To: linux-net@xxxxxxxxxxxxxxx > Subject: Connect two PC's > > Hi there, > > I'm trying to connect two PC's with a network cable. A simple ping > doesn't work in either direction. One machine has two network cards. > So I can see that its routing table may need to be adjusted. But the > other machine has only one network card, and the cable goes straight > to the first machine. How can I find out what is wrong? Below is the > output of > > ifconfig -a > route -n > ping <IP-address> > > for both. The machines run livecd's (Knoppix 3.0 -- 2 network cards / > Puppy 1.0.4 -- one network card) > > If I connect any of the three network cards to a router, I can reach > the Internet from both machines. So I don't think it is a hardware or > driver problem. > > Would dmesg output help?? > > Stephan > > > > Machine 1 has one network card, its IP address should be 192.168.2.115 > # ifconfig -a > eth0 Link encap:Ethernet HWaddr 00:01:03:E7:8A:F8 > inet addr:192.168.2.115 Bcast:192.168.2.255 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:1333 errors:0 dropped:0 overruns:0 carrier:1308 > collisions:0 txqueuelen:1000 > RX bytes:0 (0.0 iB) TX bytes:202860 (198.1 kiB) > Interrupt:11 Base address:0xa000 > > 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:1296 errors:0 dropped:0 overruns:0 frame:0 > TX packets:1296 errors:0 dropped:0 overruns:0 carrier:0 > collisions:0 txqueuelen:0 > RX bytes:144848 (141.4 kiB) TX bytes:144848 (141.4 kiB) > > # route -n > Kernel IP routing table > Destination Gateway Genmask Flags Metric Ref Use > Iface > 192.168.2.0 0.0.0.0 255.255.255.0 U 0 0 0 > eth0 > 127.0.0.0 0.0.0.0 255.0.0.0 U 0 0 0 lo > # ping 192.168.2.116 > PING 192.168.2.116 (192.168.2.116): 56 data bytes > > --- 192.168.2.116 ping statistics --- > 3 packets transmitted, 0 packets received, 100% packet loss > > > Machine 2 has two network cards. eth1 connects to the Internet (which > "works") > > # ifconfig -a > eth0 Link encap:Ethernet HWaddr 00:50:BA:48:29:7B > inet addr:192.168.2.116 Bcast:192.168.2.255 Mask:255.255.255.0 > inet6 addr: fe80::250:baff:fe48:297b/64 Scope:Link > UP BROADCAST MULTICAST MTU:1500 Metric:1 > RX packets:0 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:0 (0.0 b) TX bytes:1746 (1.7 KiB) > Interrupt:11 Base address:0xc000 > > eth1 Link encap:Ethernet HWaddr 00:D0:09:BF:5E:6D > inet addr:192.168.2.203 Bcast:192.168.2.255 Mask:255.255.255.0 > inet6 addr: fe80::2d0:9ff:febf:5e6d/64 Scope:Link > UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 > RX packets:448 errors:0 dropped:0 overruns:0 frame:0 > TX packets:31 errors:0 dropped:0 overruns:0 carrier:0 > collisions:0 txqueuelen:1000 > RX bytes:34232 (33.4 KiB) TX bytes:3164 (3.0 KiB) > Interrupt:10 Base address:0xe000 > > 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:12 errors:0 dropped:0 overruns:0 frame:0 > TX packets:12 errors:0 dropped:0 overruns:0 carrier:0 > collisions:0 txqueuelen:0 > RX bytes:724 (724.0 b) TX bytes:724 (724.0 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) > # route -n > Kernel IP routing table > Destination Gateway Genmask Flags Metric Ref Use > Iface > 192.168.2.0 0.0.0.0 255.255.255.0 U 0 0 0 > eth1 > 192.168.2.0 0.0.0.0 255.255.255.0 U 0 0 0 > eth0 > 0.0.0.0 192.168.2.1 0.0.0.0 UG 0 0 0 > eth1 > # ping 192.168.2.115 > PING 192.168.2.115 (192.168.2.115): 56 data bytes > > --- 192.168.2.115 ping statistics --- > 27 packets transmitted, 0 packets received, 100% packet loss > - > : send the line "unsubscribe linux-net" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html - : send the line "unsubscribe linux-net" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html - : send the line "unsubscribe linux-net" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
