[SOLVED] ADSL Broadband connectivity

Issues related to configuring your network
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mahajan
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[SOLVED] ADSL Broadband connectivity

Post by mahajan » 2011/02/10 06:20:44

Pl can anyone guide me to connect centos 5.5 using ethernet port to ADSL Broadband modem which is configured in PPPoe mode?
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AlanBartlett
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Re: ADSL Broadband connectivity

Post by AlanBartlett » 2011/02/10 17:57:44

Welcome to the [i]CentOS[/i] fora.

The recommended reading for all new members starts with the [url=https://www.centos.org/modules/newbb/viewforum.php?forum=47]FAQ & Readme First[/url].

Assuming that your ADSL Modem is a standard home combined "modem / router / DNS server / AP / WAP / switch" device and you have entered the details provided by your ISP to access your account with them, all you should need to do is invoke, as [i]root[/i], [b]system-config-network[/b]. Select the appropriate hardware device, configure the network to operate in [b]DHCP[/b] mode, save your changes and then exit the utility.

Now, as [i]root[/i], restart the network service --

[code]
[b]/sbin/service network restart [/b]
[/code]
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mahajan
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Re: ADSL Broadband connectivity

Post by mahajan » 2011/02/11 05:46:21

Sir, I tried the commands and i configured eth0 to dhcp mode but the output is as below
Determining IP information for eth0....failed; no link present. check cable ?

I checked the cat5 cable using a laptop ethernet port having os WIN XP for that the cable is working OK, means the broadband get connected and I can surf the internet.

please guide .. Thanks
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pschaff
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Re: ADSL Broadband connectivity

Post by pschaff » 2011/02/11 17:27:06

Sounds like a hardware-level or possibly driver problem to me. Any chance of trying a different NIC on the CentOS system, or checking the current NIC against some different hardware?

If still having problems please read [url=http://www.centos.org/modules/newbb/viewtopic.php?topic_id=25128&forum=47]How to provide information about your system[/url] and using [url=http://en.wikipedia.org/wiki/Sneakernet]sneakernet[/url], provide the output from running [b]./getinfo.sh network[/b].
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foxb
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[SOLVED] ADSL Broadband connectivity

Post by foxb » 2011/02/11 21:32:57

http://www.centos.org/docs/5/html/Deployment_Guide-en-US/s1-network-config-xdsl.html
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mahajan
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Re: ADSL Broadband connectivity

Post by mahajan » 2011/02/14 06:58:27

I Used the eth2 ethernet card instead of eth1. and the error link not present ..check cable?, got solved. but now the new error as below is showing..

Bringing uo interface eth2:
Determing IP Information for eth2....grep: /etc/sysconfig/network-scripts/ifcfg-eth0: Permission denied.
grep: /etc/sysconfig/network-scripts/ifcfg-eth1: Permission denied.
grep: /etc/sysconfig/network-scripts/ifcfg-eth2: Permission denied.
grep: /etc/sysconfig/network-scripts/ifcfg-eth0: Permission denied.
grep: /etc/sysconfig/network-scripts/ifcfg-eth1: Permission denied.
grep: /etc/sysconfig/network-scripts/ifcfg-eth2: Permission denied.

/sbin/dhclient-script: Configuration for eth2 not found. Continuing with defaults.

/etc/sysconfig/network-scripts/network-functions : line 78: eth2: no such file or directory

failed.

Please guide for the solution. Thanks
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Re: ADSL Broadband connectivity

Post by pschaff » 2011/02/14 15:53:10

So, seems we have 3 Ethernet interfaces to contend with. How did you go about configuring the NICs, and what did you do that generated those errors? It would still be good to see the information requested in post #4.
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mahajan
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Re: ADSL Broadband connectivity

Post by mahajan » 2011/02/15 06:12:32

The output of ./getinfo network is as below for your reference please. Thanks for your reply

Information for network problems.
[code]
== BEGIN uname -rmi ==
2.6.18-194.el5 i686 i386
== END uname -rmi ==

== BEGIN rpm -qa \*-release\* ==
centos-release-notes-5.5-0
centos-release-5-5.el5.centos
== END rpm -qa \*-release\* ==

== BEGIN cat /etc/redhat-release ==
CentOS release 5.5 (Final)
== END cat /etc/redhat-release ==

== BEGIN getenforce ==
Enforcing
== END getenforce ==

== BEGIN lspci ==
00:00.0 Host bridge: Broadcom CMIC-LE Host Bridge (GC-LE chipset) (rev 33)
00:00.1 Host bridge: Broadcom CMIC-LE Host Bridge (GC-LE chipset)
00:00.2 Host bridge: Broadcom CMIC-LE Host Bridge (GC-LE chipset)
00:04.0 Class ff00: Dell Embedded Remote Access or ERA/O
00:04.1 Class ff00: Dell Remote Access Card III
00:04.2 Class ff00: Dell Embedded Remote Access: BMC/SMIC device
00:0e.0 VGA compatible controller: ATI Technologies Inc Rage XL (rev 27)
00:0f.0 Host bridge: Broadcom CSB5 South Bridge (rev 93)
00:0f.1 IDE interface: Broadcom CSB5 IDE Controller (rev 93)
00:0f.2 USB Controller: Broadcom OSB4/CSB5 OHCI USB Controller (rev 05)
00:0f.3 ISA bridge: Broadcom CSB5 LPC bridge
00:10.0 Host bridge: Broadcom CIOB-X2 PCI-X I/O Bridge (rev 05)
00:10.2 Host bridge: Broadcom CIOB-X2 PCI-X I/O Bridge (rev 05)
00:11.0 Host bridge: Broadcom CIOB-X2 PCI-X I/O Bridge (rev 05)
00:11.2 Host bridge: Broadcom CIOB-X2 PCI-X I/O Bridge (rev 05)
01:06.0 Ethernet controller: Intel Corporation 82557/8/9/0/1 Ethernet Pro 100 (rev 0d)
01:08.0 Ethernet controller: Intel Corporation 82557/8/9/0/1 Ethernet Pro 100 (rev 0d)
03:08.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5703X Gigabit Ethernet (rev 02)
04:08.0 PCI bridge: Intel Corporation 80303 I/O Processor PCI-to-PCI Bridge (rev 01)
04:08.1 RAID bus controller: Dell PowerEdge Expandable RAID Controller 3/Di (rev 01)
== END lspci ==

== BEGIN lspci -n ==
00:00.0 0600: 1166:0014 (rev 33)
00:00.1 0600: 1166:0014
00:00.2 0600: 1166:0014
00:04.0 ff00: 1028:000c
00:04.1 ff00: 1028:0008
00:04.2 ff00: 1028:000d
00:0e.0 0300: 1002:4752 (rev 27)
00:0f.0 0600: 1166:0201 (rev 93)
00:0f.1 0101: 1166:0212 (rev 93)
00:0f.2 0c03: 1166:0220 (rev 05)
00:0f.3 0601: 1166:0225
00:10.0 0600: 1166:0101 (rev 05)
00:10.2 0600: 1166:0101 (rev 05)
00:11.0 0600: 1166:0101 (rev 05)
00:11.2 0600: 1166:0101 (rev 05)
01:06.0 0200: 8086:1229 (rev 0d)
01:08.0 0200: 8086:1229 (rev 0d)
03:08.0 0200: 14e4:16a7 (rev 02)
04:08.0 0604: 8086:0309 (rev 01)
04:08.1 0104: 1028:000a (rev 01)
== END lspci -n ==

== BEGIN ifconfig -a ==
__tmp603595036 Link encap:Ethernet HWaddr 00:0E:0C:5D:95:33
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)

eth1 Link encap:Ethernet HWaddr 00:0E:0C:5D:96:52
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)

eth2 Link encap:Ethernet HWaddr 00:11:43:30:EF:9E
inet6 addr: fe80::211:43ff:fe30:ef9e/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:34712 dropped:0 overruns:0 frame:471370
TX packets:424 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 b) TX bytes:145541 (142.1 KiB)
Interrupt:193 Memory:fcd00000-fcd10000

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:1632 errors:0 dropped:0 overruns:0 frame:0
TX packets:1632 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:146311 (142.8 KiB) TX bytes:146311 (142.8 KiB)

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)

virbr0 Link encap:Ethernet HWaddr 00:00:00:00:00:00
inet addr:192.168.122.1 Bcast:192.168.122.255 Mask:255.255.255.0
inet6 addr: fe80::200:ff:fe00:0/64 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:7722 (7.5 KiB)

== END ifconfig -a ==

== BEGIN route -n ==
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.122.0 0.0.0.0 255.255.255.0 U 0 0 0 virbr0
== END route -n ==

== BEGIN cat /etc/resolv.conf ==
== END cat /etc/resolv.conf ==

== BEGIN grep net /etc/nsswitch.conf ==
#networks: nisplus [NOTFOUND=return] files
#netmasks: nisplus [NOTFOUND=return] files
netmasks: files
networks: files
netgroup: nisplus
== END grep net /etc/nsswitch.conf ==

== BEGIN chkconfig --list | grep -Ei 'network|wpa' ==
NetworkManager 0:off 1:off 2:off 3:off 4:off 5:on 6:off
network 0:off 1:off 2:on 3:on 4:on 5:on 6:off
wpa_supplicant 0:off 1:off 2:off 3:off 4:off 5:off 6:off
== END chkconfig --list | grep -Ei 'network|wpa' ==

[/code]
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pschaff
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Re: ADSL Broadband connectivity

Post by pschaff » 2011/02/17 01:56:12

The first thing to do is to turn off either NetworkManager or the network service as they tend to interfere with each other. It is generally best to use NetworkManager on a laptop or other portable system, and the network service for "fixed" systems.[code]
chkconfig NetworkManager off
service NetworkManager stop
[/code]
Then use system-config-network to configure the connection. You may need to remove that strange __tmp603595036 device first.
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mahajan
Posts: 10
Joined: 2011/02/08 11:18:06

Re: ADSL Broadband connectivity

Post by mahajan » 2011/02/17 05:55:46

Sir, I have stopped the NetworkManager service and also removed _tmp603595036 the device. But the error posted in #6 is still appearing. The fresh output of ./getinfo network as below for your reference. Thanks

Information for network problems.
[code]
== BEGIN uname -rmi ==
2.6.18-194.el5 i686 i386
== END uname -rmi ==

== BEGIN rpm -qa \*-release\* ==
centos-release-notes-5.5-0
centos-release-5-5.el5.centos
== END rpm -qa \*-release\* ==

== BEGIN cat /etc/redhat-release ==
CentOS release 5.5 (Final)
== END cat /etc/redhat-release ==

== BEGIN getenforce ==
Enforcing
== END getenforce ==

== BEGIN lspci ==
00:00.0 Host bridge: Broadcom CMIC-LE Host Bridge (GC-LE chipset) (rev 33)
00:00.1 Host bridge: Broadcom CMIC-LE Host Bridge (GC-LE chipset)
00:00.2 Host bridge: Broadcom CMIC-LE Host Bridge (GC-LE chipset)
00:04.0 Class ff00: Dell Embedded Remote Access or ERA/O
00:04.1 Class ff00: Dell Remote Access Card III
00:04.2 Class ff00: Dell Embedded Remote Access: BMC/SMIC device
00:0e.0 VGA compatible controller: ATI Technologies Inc Rage XL (rev 27)
00:0f.0 Host bridge: Broadcom CSB5 South Bridge (rev 93)
00:0f.1 IDE interface: Broadcom CSB5 IDE Controller (rev 93)
00:0f.2 USB Controller: Broadcom OSB4/CSB5 OHCI USB Controller (rev 05)
00:0f.3 ISA bridge: Broadcom CSB5 LPC bridge
00:10.0 Host bridge: Broadcom CIOB-X2 PCI-X I/O Bridge (rev 05)
00:10.2 Host bridge: Broadcom CIOB-X2 PCI-X I/O Bridge (rev 05)
00:11.0 Host bridge: Broadcom CIOB-X2 PCI-X I/O Bridge (rev 05)
00:11.2 Host bridge: Broadcom CIOB-X2 PCI-X I/O Bridge (rev 05)
01:06.0 Ethernet controller: Intel Corporation 82557/8/9/0/1 Ethernet Pro 100 (rev 0d)
01:08.0 Ethernet controller: Intel Corporation 82557/8/9/0/1 Ethernet Pro 100 (rev 0d)
03:08.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5703X Gigabit Ethernet (rev 02)
04:08.0 PCI bridge: Intel Corporation 80303 I/O Processor PCI-to-PCI Bridge (rev 01)
04:08.1 RAID bus controller: Dell PowerEdge Expandable RAID Controller 3/Di (rev 01)
== END lspci ==

== BEGIN lspci -n ==
00:00.0 0600: 1166:0014 (rev 33)
00:00.1 0600: 1166:0014
00:00.2 0600: 1166:0014
00:04.0 ff00: 1028:000c
00:04.1 ff00: 1028:0008
00:04.2 ff00: 1028:000d
00:0e.0 0300: 1002:4752 (rev 27)
00:0f.0 0600: 1166:0201 (rev 93)
00:0f.1 0101: 1166:0212 (rev 93)
00:0f.2 0c03: 1166:0220 (rev 05)
00:0f.3 0601: 1166:0225
00:10.0 0600: 1166:0101 (rev 05)
00:10.2 0600: 1166:0101 (rev 05)
00:11.0 0600: 1166:0101 (rev 05)
00:11.2 0600: 1166:0101 (rev 05)
01:06.0 0200: 8086:1229 (rev 0d)
01:08.0 0200: 8086:1229 (rev 0d)
03:08.0 0200: 14e4:16a7 (rev 02)
04:08.0 0604: 8086:0309 (rev 01)
04:08.1 0104: 1028:000a (rev 01)
== END lspci -n ==

== BEGIN ifconfig -a ==
eth0 Link encap:Ethernet HWaddr 00:0E:0C:5D:95:33
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)

eth1 Link encap:Ethernet HWaddr 00:0E:0C:5D:96:52
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)

eth2 Link encap:Ethernet HWaddr 00:11:43:30:EF:9E
inet6 addr: fe80::211:43ff:fe30:ef9e/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:36 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 b) TX bytes:7468 (7.2 KiB)
Interrupt:209 Memory:fcd00000-fcd10000

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:64 errors:0 dropped:0 overruns:0 frame:0
TX packets:64 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:4616 (4.5 KiB) TX bytes:4616 (4.5 KiB)

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)

virbr0 Link encap:Ethernet HWaddr 00:00:00:00:00:00
inet addr:192.168.122.1 Bcast:192.168.122.255 Mask:255.255.255.0
inet6 addr: fe80::200:ff:fe00:0/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:45 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 b) TX bytes:7300 (7.1 KiB)

== END ifconfig -a ==

== BEGIN route -n ==
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.122.0 0.0.0.0 255.255.255.0 U 0 0 0 virbr0
== END route -n ==

== BEGIN cat /etc/resolv.conf ==
== END cat /etc/resolv.conf ==

== BEGIN grep net /etc/nsswitch.conf ==
#networks: nisplus [NOTFOUND=return] files
#netmasks: nisplus [NOTFOUND=return] files
netmasks: files
networks: files
netgroup: nisplus
== END grep net /etc/nsswitch.conf ==

== BEGIN chkconfig --list | grep -Ei 'network|wpa' ==
NetworkManager 0:off 1:off 2:off 3:off 4:off 5:off 6:off
network 0:off 1:off 2:on 3:on 4:on 5:on 6:off
wpa_supplicant 0:off 1:off 2:off 3:off 4:off 5:off 6:off
== END chkconfig --list | grep -Ei 'network|wpa' ==

[/code]
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