Ethernet Questions
Quoted 3 lines
===== Original Message From Ray Olszewski <[email protected]> ===== I added the list back in to this exchange, and I left your message to me intact below for that reason.
Thank you. I didn't realize until after I had sent the message that I had selected to only reply to you, and not to you plus the list.
Quoted 11 lines
The results of "ifconfig -a" indicate that the interface exists but is not configured (that is, does not have an IP address). Assuming you are right in your guess that your system uses DHCP (that is certainly something we can't tell you), then you need to run some DHCP client on the Mandrake system.
In my prior message, I listed the three common ones (see my item #3 from before); you need to check if any of them is on your system and if the system is set to use it. See if there is an entry for eth0 in
/etc/network/interfacesthat specifies use of DHCP. (I'm not actually sure that Mandrake uses this file, but it is the common way these days to set up interfaces, so it probably does.)
I don't have a network folder in /etc.
Quoted 4 lines
If DHCP is running and failing for some reason, there should be output from it, either in the dmesg ring buffer (access this with the command "dmesg") or in your log files (usually in
/var/log, though logging details vary a lot between distros).
I got some interesting information from doing this. dmesg gave me only one mention of eth0, which went:
eth0: Digital DC21040 Tulip rev 35 at 0x1080, 00:00:C0:1C:0D:C7, IRQ 9
I assume this meant the interface was up, since this is just the information I received from ifconfig -a. However, when I checked var/log, I found this, repeated in three different places, all during an attempt to startup something called inet:
localhost: can't find a dhcpcd client, sbin/pump or sbin/dhcpcd localhost network: bringing up device eth0 failed
I then went to /sbin, and there was nothing about pump or dhcpcd there. I searched around, and can't find them anywhere. I looked to see if during my install I didn't install the package(s) they were contained within, but I didn't find anything about them there, either.
Quoted 1 line
Once you have a lease, everything else will probably work.
I hope so! If this ever works I think I should become your vassal or the like in gratitude!
Quoted 10 lines
Quoted 9 lines · sadunn
Quoted 6 lines
===== Original Message From Ray Olszewski <[email protected]> ===== You are correct; it does not seem to have received a DHCP lease. I was misled by your comments in your prior message that "but my "real" IP returned a -1 result". In context, I understood this to mean that you'd received a DHCP lease; otherwise, what did your reference to "my "real" IP" mean?
Before I begin, I just want to state that I got so frustrated that I reinstalled Mandrake on my system before I began what was asked of me in
these
Quoted 4 lines
Quoted 4 lines
prior e-mails. Anyways...
By my "real" IP, I was referencing the IP that I received from the winipcfg tool available in Win98. It gave me an IP, host name, 3 DNS addresses, a
node
Quoted 1 line
Quoted 1 line
type, and a DHCP server. I assumed that they would carry over to Linux, but
I
Quoted 7 lines
Quoted 7 lines
pinged the DNS addresses, and got nothing.
Quoted 5 lines
New comments:
1. It is unlikely that your system lacks the command "ifconfig". Were you root when you ran the command? If not, please try again as root. (Even though you are clearly not getting an IP address, this test (by using the
-a
Quoted 4 lines
Quoted 4 lines
Quoted 2 lines
flag) will tell us if the interface itself exists. If not, you have a problem at some earlier level we have not yet addressed.
I ran the command from root, and it returned eth0 and lo. The eth0 said
this:
Quoted 11 lines
Quoted 11 lines
Link encap: Ethernet
HWaddr 00:00:C0:0D:C7
Broadcast Multicast
MTN: 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
Interrupt: 9
base address:0x1080
Quoted 1 line
Quoted 1 line
Quoted 1 line
If you were root, and ifconfig is *really* not on your system, then you
need
Quoted 8 lines
Quoted 8 lines
Quoted 8 lines
to find out what low-level tool Mandrake provides for accessing interfaces. The only other one I can think of is "ip", and I believe it does not have a command to display information about unconfigured interfaces.
2. Since you are not getting an IP address via DHCP, we need to consider whether you have a working Ethernet interface at all. If (proprely run) "ifconfig -a" does NOT show an eth0 device, then please tell us what Ethernet card you are using, what kernel module(s) you are running to
access
Quoted 6 lines
Quoted 6 lines
Quoted 6 lines
it, and what the kernel reports during boot/init about it. This last part will be in the kernel's boot messages, visible via the command "dmesg" and possibly in a logfile somewhere (try grep'ing for it in
/var/log).3. If you DO have an eth0 interface, then we need to wonder why it is not being configured during boot/init. Are you sure your setup uses DHCP (how
do
Quoted 9 lines
Quoted 9 lines
Quoted 3 lines
you know)? What does the Linux DHCP client -- I don't know which one Mandrake uses, but the common ones are pump, dhcpcd, and dhclient -- report during the boot/init sequence (look in the logs)?
I'm not sure if my setup uses DHCP, but my windows system used it, and I was unaware what to do in Linux.
Quoted 2 lines
I should clarify one thing: while Linux is at its core a unified OS across all its distributions, these days distros try to differentiate themselves
at
Quoted 76 lines
Quoted 50 lines
Quoted 16 lines
the User Interface level. As a Debian user, I'm not familiar with the UI utilities Lothar and DrakConfig, the ones you mention using to set up your interface. Also, the unspecified "quick network setup wizard" you learned about in unnamed documentation may not be there because it is specific to some other distro. Here, I am staying with the low-level setup tools that I believe still to be standard across all full-size Linux distros.
Quoted 6 lines · sadunn
===== Original Message From Ray Olszewski <[email protected]> ===== OK. Networking 101. Your system needs a valid IP address, a routing table that includes a route to a working gateway to the Internet, and access to DNS servers that can resolve names for you. (It may need other things too, but this is the base.) To let us help you figure out what it wrong, report the following (from your machine, AFTER it has received its DHCP lease):
Quoted 2 lines
I don't think it has received its DHCP lease, since the netstat -nr command returned a destination to 127.0.0.0, and none of the other data seems to
make
Quoted 18 lines
any sense whatsoever.
Quoted 2 lines
1. The complete, exact output of "ifconfig -a"
bash: ifconfig: command not found
Quoted 1 line
2. The complete, exact output of "netstat -nr"
Kernel IP routing table
Destination Gateway Genmask Flags Mss Window irtt Iface 127.0.0.0 0.0.0.0 255.0.0.0 u 0 0 0 loQuoted 4 lines
3. Try to ping the IP address reported in step 1. Tell us either that the ping works or EXACTLY how it fails ("-1" isn't enough; we need to see the text that precedes the -1).
Quoted 6 lines
I didn't get an address to ping because the command failed.
Quoted 2 lines
4. Try to ping the gateway address reported in step 2 -- the routing table (assuming there is one).
I didn't think 0.0.0.0 was a vaild address to ping, so I didn't. Perhaps I
am
Quoted 6 lines
mistaken?
Quoted 1 line
5. The contents of the file
/etc/resolv.conf.search localdomain
Quoted 25 lines
Quoted 6 lines
Quoted 2 lines
6. The results of pinging the first address listed in
/etc/resolv.conf.I had no address to ping
Quoted 1 line
You may also have a hardware problem. I don't want to take the time to
write
Quoted 15 lines
Quoted 4 lines
out those tests right now; if the results of this first set suggest a hardware problem, I'll return to it. Oh, one more thing ...
7. The output of "uname -a"
Linux localhost 2.2.14-15mdk #1 Tue Jan 4 22:24:20 CET 2000 i686 unknown
[old stuff deleted]
--
------------------------------------"Never tell me the odds!"---
Ray Olszewski -- Han Solo
Palo Alto, CA [email protected]
----------------------------------------------------------------
Quoted 5 lines
--
------------------------------------"Never tell me the odds!"---
Ray Olszewski -- Han Solo
Palo Alto, CA [email protected]
----------------------------------------------------------------
-
To unsubscribe from this list: send the line "unsubscribe linux-newbie" in the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.linux-learn.org/faqs