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jobleep 08-07-2008 09:59 AM
ethernet adapter configured to use dhcp, but no connectivity
 
I am a complete Linux novice and use slackware. I ran netconfig, selecting dhcp. When I use ipconfig -a, it shows me the hw address, ip address, subnet mask etc. But there are always some errors, under errors. When I boot, there are like 2 or 3 errors, and from there it keeps increasing (i kept using ipconfig -a periodically). In like 5 mins, there are 500 errors. The net worked this morning, for a few hours, and then went off again.

I have a dual booting system with vista, and the net runs fine on the vista partition.

onebuck 08-07-2008 11:37 AM
Hi,

For Linux it would be 'ifconfig -a'.

What errors are you getting? post a sample.

Post the output for 'ifconfig -a', 'route -n' and '/etc/rc.d/rc.inet1.conf'. This should allow us to help diagnose your problem.

You should read the next two links;

jobleep 08-07-2008 12:33 PM
# /etc/rc.d/rc.inet1.conf
#
# This file contains the configuration settings for network interfaces.
# If USE_DHCP[interface] is set to "yes", this overrides any other settings.
# If you don't have an interface, leave the settings null ("").

# You can configure network interfaces other than eth0,eth1... by setting
# IFNAME[interface] to the interface's name. If IFNAME[interface] is unset
# or empty, it is assumed you're configuring eth<interface>.

# Several other parameters are available, the end of this file contains a
# comprehensive set of examples.

# =============================================================================

# Config information for eth0:
IPADDR[0]=""
NETMASK[0]=""
USE_DHCP[0]="yes"
DHCP_HOSTNAME[0]=""

# Config information for eth1:
IPADDR[1]=""
NETMASK[1]=""
USE_DHCP[1]=""
DHCP_HOSTNAME[1]=""

# Config information for eth2:
IPADDR[2]=""
NETMASK[2]=""
USE_DHCP[2]=""
DHCP_HOSTNAME[2]=""

# Config information for eth3:
IPADDR[3]=""
NETMASK[3]=""
USE_DHCP[3]=""
DHCP_HOSTNAME[3]=""

# Default gateway IP address:
GATEWAY=""

# Change this to "yes" for debugging output to stdout. Unfortunately,
# /sbin/hotplug seems to disable stdout so you'll only see debugging output
# when rc.inet1 is called directly.
DEBUG_ETH_UP="no"

## Example config information for wlan0. Uncomment the lines you need and fill
## in your info. (You may not need all of these for your wireless network)
#IFNAME[4]="wlan0"
#IPADDR[4]=""
#NETMASK[4]=""
#USE_DHCP[4]="yes"
#DHCP_HOSTNAME[4]="icculus-wireless"
#DHCP_KEEPRESOLV[4]="yes"
#DHCP_KEEPNTP[4]="yes"
#DHCP_KEEPGW[4]="yes"
#DHCP_IPADDR[4]=""
#WLAN_ESSID[4]=BARRIER05
#WLAN_MODE[4]=Managed
##WLAN_RATE[4]="54M auto"
##WLAN_CHANNEL[4]="auto"
##WLAN_KEY[4]="D5AD1F04ACF048EC2D0B1C80C7"
##WLAN_IWPRIV[4]="set AuthMode=WPAPSK | set EncrypType=TKIP | set WPAPSK=96389dc66eaf7e6efd5b5523ae43c7925ff4df2f8b7099495192d44a774fda16"
#WLAN_WPA[4]="wpa_supplicant"
#WLAN_WPADRIVER[4]="ndiswrapper"

## Some examples of additional network parameters that you can use.
## Config information for wlan0:
#IFNAME[4]="wlan0" # Use a different interface name nstead of
# the default 'eth4'
#HWADDR[4]="00:01:23:45:67:89" # Overrule the card's hardware MAC address
#MTU[4]="" # The default MTU is 1500, but you might need
# 1360 when you use NAT'ed IPSec traffic.
#DHCP_KEEPRESOLV[4]="yes" # If you dont want /etc/resolv.conf overwritten
#DHCP_KEEPNTP[4]="yes" # If you don't want ntp.conf overwritten
#DHCP_KEEPGW[4]="yes" # If you don't want the DHCP server to change
# your default gateway
#DHCP_IPADDR[4]="" # Request a specific IP address from the DHCP
# server
#WLAN_ESSID[4]=DARKSTAR # Here, you can override _any_ parameter
# defined in rc.wireless.conf, by prepending
# 'WLAN_' to the parameter's name. Useful for
# those with multiple wireless interfaces.
#WLAN_IWPRIV[4]="set AuthMode=WPAPSK | set EncrypType=TKIP | set WPAPSK=thekey"
# Some drivers require a private ioctl to be
# set through the iwpriv command. If more than
# one is required, you can place them in the
# IWPRIV parameter (separated with the pipe (|)
# character, see the example).


ifconfig -a





eth0 Link encap:Ethernet HWaddr 00:1f:c6:67:a6:59
inet addr:172.16.19.35 Bcast:172.16.19.255 Mask:255.255.255.0
inet6 addr: fe80::21f:c6ff:fe67:a659/64 Scope:Link
UP BROADCAST NOTRAILERS RUNNING MULTICAST MTU:1500 Metric:1
RX packets:3382 errors:238 dropped:0 overruns:0 frame:238
TX packets:226 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:265170 (258.9 KiB) TX bytes:36749 (35.8 KiB)
Interrupt:20 Base address:0xdead

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: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
172.16.19.0 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
0.0.0.0 172.16.19.254 0.0.0.0 UG 0 0 0 eth0

jobleep 08-07-2008 12:36 PM
By errors, I meant that ifconfig showed some number of errors, under 'error: '. But like I said before, I'm on vista right now, I just rebooted into slackware (to get the stuff I poseted above )and tried the net, but it didn't work, and it's always been fine on vista.

onebuck 08-07-2008 09:53 PM
Hi,

In the future please place any data within vbcode tags, either quote or code. The tags are at the top of the reply window.

The gateway IP address of '172.16.19.254', is that correct?

You have static assigned IP(s) for your routers/modem?

symatic 08-08-2008 12:59 AM
The errors are connection errors (crappy dsl or something). I was reading this the other day it may be of help http://humanreadable.nfshost.com/sdeg/dhcpcd.htm

My friend has this same problem with his dsl company. One of the ISP that you don't sign into, I find this strange...hmm Not saying this is the case for you but info helps.

jobleep 08-08-2008 02:56 AM
Yes, 172.16.19.254 is the gateway IP.

No, static IP's aren't assigned.

Thanks for the link @ symatic.

The thing is that I'm a sophomore in college (in India), apparently no one here has tried using slackware. I'm using the college LAN. All the guys who know something of worth apparently use OPENSUSE or Fedora. But I wanted to start with slackware because I really want to learn linux.

C-Sniper 08-08-2008 11:57 AM
try running 'dhcpcd eth0' Sometimes i noticed that you have to init the dhcp daemon for the interface in order for it to pick up if you plug in after the boot-up


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