Config on /etc/network/interfaces

satimis · 08-20-2007, 10:45 AM

Hi folks,

Ubuntu 7.04 lamp server amd64
only one NIC

Connection
Server --> Router --> DSL Modem --> ISP

The router is supplied by ISP and password-locked by ISP. I suppose 192.168.0.1 is the gateway. How can I check it?

Fixed IP
220.232.213.178

IP address reserved for server on Router
192.168.0.10

DNS
202.14.67.4/14

$ cat /etc/network/interfaces

Code:

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
auto eth0
iface eth0 inet dhcp

Now I'll change the second part after "auto eth0" as:

Code:

auto eth0
iface eth0 init static
	address 192.168.0.10
	netmask 255.255.255.255
	network ???
	broadcast ???
	gateway ???
	# dns -* options are implemented by the resolvconf package, if installed
	dns-nemserver 202.14.67.4 204.14.67.14

Please advise what shall I enter for
network ???
broadcast ???
gateway ???

Shall I put the fix IP (202.232.213.178) here? It is for external only.

TIA

B.R.
satimis

TigerOC · 08-20-2007, 11:37 AM

Ping the router starting with 192.168.0.1 until you get a response, or ask your isp.
You don't really need to worry about the network or broadcast but they are 192.168.0.0 and 192.168.0.255 respectively. The gateway would be the router address which you will have to find out as above.

satimis · 08-20-2007, 09:56 PM

Quote:

Originally Posted by TigerOC

Ping the router starting with 192.168.0.1 until you get a response, or ask your isp.
You don't really need to worry about the network or broadcast but they are 192.168.0.0 and 192.168.0.255 respectively. The gateway would be the router address which you will have to find out as above.

Hi TigerOC,

Tks for your advice.

$ ping -c3 192.168.0.1

Code:

PING 192.168.0.1 (192.168.0.1) 56(84) bytes of data.
64 bytes from 192.168.0.1: icmp_seq=1 ttl=150 time=0.651 ms
64 bytes from 192.168.0.1: icmp_seq=2 ttl=150 time=0.707 ms
64 bytes from 192.168.0.1: icmp_seq=3 ttl=150 time=0.709 ms

--- 192.168.0.1 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2005ms
rtt min/avg/max/mdev = 0.651/0.689/0.709/0.026 ms

$ ping -c3 192.168.0.11

Code:

PING 192.168.0.11 (192.168.0.11) 56(84) bytes of data.
64 bytes from 192.168.0.11: icmp_seq=1 ttl=64 time=0.031 ms
64 bytes from 192.168.0.11: icmp_seq=2 ttl=64 time=0.021 ms
64 bytes from 192.168.0.11: icmp_seq=3 ttl=64 time=0.021 ms

--- 192.168.0.11 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2000ms
rtt min/avg/max/mdev = 0.021/0.024/0.031/0.006 ms

I suppose this is the IP add assigned to this PC.

$ ifconfig -a

Code:

eth0      Link encap:Ethernet  HWaddr 00:0E:A6:F9:A3:5B  
          inet addr:192.168.0.11  Bcast:192.168.0.255  Mask:255.255.255.0
          inet6 addr: fe80::20e:a6ff:fef9:a35b/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:5722 errors:0 dropped:0 overruns:0 frame:0
          TX packets:5195 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:4892417 (4.6 MiB)  TX bytes:999181 (975.7 KiB)
          Interrupt:20 Base address:0x6000 

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:18 errors:0 dropped:0 overruns:0 frame:0
          TX packets:18 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:1848 (1.8 KiB)  TX bytes:1848 (1.8 KiB)

Yes, confirmed.

$ ping -c3 192.168.0.10

Code:

PING 192.168.0.10 (192.168.0.10) 56(84) bytes of data.
From 192.168.0.11 icmp_seq=1 Destination Host Unreachable
From 192.168.0.11 icmp_seq=2 Destination Host Unreachable
From 192.168.0.11 icmp_seq=3 Destination Host Unreachable

--- 192.168.0.10 ping statistics ---
3 packets transmitted, 0 received, +3 errors, 100% packet loss, time 2001ms
, pipe 3

$ ping -c3 192.168.0.12
$ ping -c3 192.168.0.9
both

Code:

--- 192.168.0.9 ping statistics ---
3 packets transmitted, 0 received, +3 errors, 100% packet loss, time 2010ms

B.R.
satimis