Belkin and wireless modem
in [Linux Networking]
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From: sb5309 on 10 Apr 2008 03:55 My company's Linux server has the following interfaces: eth0, eth1, eth3, lo (I don't know why eth2 is missing). Their settings: eth1: DEVICE=eth1 BROADCAST=218.111.104.107 IPADDR=218.111.104.106 NETMASK=255.255.255.255 NETWORK=218.111.104.104 ONBOOT=yes TYPE=Ethernet GATEWAY=218.111.104.105 eth0: DEVICE=eth0 ONBOOT=yes BOOTPROTO=static IPADDR=192.168.42.1 NETMASK=255.255.255.0 GATEWAY=218.111.104.106 eth3: DEVICE=eth3 ONBOOT=yes IPADDR=192.168.43.1 NETMASK=255.255.255.0 GATEWAY=218.111.104.106 There are 2 network segments; one segment with IPs type 192.168.42.*, default gateway 192.168.42.1; the other of IP type 192.168.43.*, default gateway 192.168.43.1. I guess that eth0 and eth3 route thier internet traffic to eth1, which I believe (not sure) is connected to an external ADSL modem (Lucent CellPipe). When I unplug the network cable from the modem, the server shows "eth1 NIC down". When I plug in a Belkin G Wireless Router, the server shows "eth1 NIC UP 100Mbps". To the Belkin router (with 4 ports and a WAN port) I then connect a wireless broadband modem via its WAN port (supposedly up to 1Mbps) for internet access (wireless internet access, not wireless LAN). The Belkin is configured with the user name and password. I cannot access the internet via LAN. I am told the Belkin has a fixed IP 192.168.1.1, which I fail to ping from the server. A laptop connected directly to the Belkin port shows the router to have IP 192.168.1.1, and it has no problem accessing the internet. I am think of changing the gateway of eth1 to 192.168.1.1. But I suppose it is pointless if I can't ping the router. Could somebody help ? Thanks.
From: Bill Marcum on 10 Apr 2008 11:15 On 2008-04-10, sb5309(a)yahoo.com <sb5309(a)yahoo.com> wrote: > When I unplug the network cable from the modem, the server shows "eth1 > NIC down". > > When I plug in a Belkin G Wireless Router, the server shows "eth1 NIC > UP 100Mbps". > > To the Belkin router (with 4 ports and a WAN port) I then connect a > wireless broadband modem via its WAN port (supposedly up to 1Mbps) for > internet access (wireless internet access, not wireless LAN). The > Belkin is configured with the user name and password. > > I cannot access the internet via LAN. I am told the Belkin has a fixed > IP 192.168.1.1, which I fail to ping from the server. A laptop > connected directly to the Belkin port shows the router to have IP > 192.168.1.1, and it has no problem accessing the internet. > > I am think of changing the gateway of eth1 to 192.168.1.1. But I > suppose it is pointless if I can't ping the router. > > Could somebody help ? Thanks. Is the address of eth1 set statically or by DHCP? Look in /etc/sysconfig or /etc/network/interfaces, depending on the distro.
From: Unruh on 10 Apr 2008 13:05 sb5309(a)yahoo.com writes: >My company's Linux server has the following interfaces: >eth0, eth1, eth3, lo (I don't know why eth2 is missing). >Their settings: >eth1: >DEVICE=eth1 >BROADCAST=218.111.104.107 >IPADDR=218.111.104.106 >NETMASK=255.255.255.255 >NETWORK=218.111.104.104 >ONBOOT=yes >TYPE=Ethernet >GATEWAY=218.111.104.105 >eth0: >DEVICE=eth0 >ONBOOT=yes >BOOTPROTO=static >IPADDR=192.168.42.1 >NETMASK=255.255.255.0 >GATEWAY=218.111.104.106 >eth3: >DEVICE=eth3 >ONBOOT=yes >IPADDR=192.168.43.1 >NETMASK=255.255.255.0 >GATEWAY=218.111.104.106 >There are 2 network segments; one segment with IPs type 192.168.42.*, >default gateway 192.168.42.1; the other of IP type 192.168.43.*, >default gateway 192.168.43.1. >I guess that eth0 and eth3 route thier internet traffic to eth1, which >I believe (not sure) is connected to an external ADSL modem (Lucent >CellPipe). >When I unplug the network cable from the modem, the server shows "eth1 >NIC down". >When I plug in a Belkin G Wireless Router, the server shows "eth1 NIC >UP 100Mbps". >To the Belkin router (with 4 ports and a WAN port) I then connect a >wireless broadband modem via its WAN port (supposedly up to 1Mbps) for >internet access (wireless internet access, not wireless LAN). The >Belkin is configured with the user name and password. >I cannot access the internet via LAN. I am told the Belkin has a fixed >IP 192.168.1.1, which I fail to ping from the server. A laptop >connected directly to the Belkin port shows the router to have IP >192.168.1.1, and it has no problem accessing the internet. >I am think of changing the gateway of eth1 to 192.168.1.1. But I >suppose it is pointless if I can't ping the router. >Could somebody help ? Thanks. While you give lots of info, which is great, the key bit of info is missing, what is the output of route -n That tells you where packets are sent to. I have no idea why your are unplugging eth1 and plugging in a new router and wireless boadband. Ie, you descibe things you do, but not why.
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