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magnetra
Joined: 21 Apr 2005
Posts: 260
Helped: 3
Location: 27.45N, 85.20E KTM, NP
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 15 Jan 2007 10:50 Need explanation on IP address result |
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When I ran "ipconfig" command on my workstation, the result I obtained is as shown in the picture (ipconfigResult.jpg). The result shows two different IP addresses i> 100.100.100.218 and ii>192.168.51.1. Can a single computer have two IP addresses. My workstation is connected to a LAN network. Could anyone please explain where I'm confused.....!
Regards
M
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dallas-lv
Joined: 15 Jan 2007
Posts: 2
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| 15 Jan 2007 11:25 Re: Need explanation on IP address result |
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| Yes, it's possible to have several ip addresses - One is main and others are aliases.
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gdaporta
Joined: 04 Apr 2006
Posts: 109
Helped: 12
Location: Argentina
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| 15 Jan 2007 13:30 Re: Need explanation on IP address result |
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Hello,
As Dallas-Iv said, it's possible. I think whe can help you if you post what is your operating system and the result of "ipconfig /all".
The /all parameter said to the ipconfig program to show all the information about your active nic's and configuration.
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GuillerMo (AR)
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magnetra
Joined: 21 Apr 2005
Posts: 260
Helped: 3
Location: 27.45N, 85.20E KTM, NP
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| 18 Jan 2007 7:54 Re: Need explanation on IP address result |
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gdaporta, i'm using Windows XP SP2 and the result of ipconfig/all is shown in the figure. Please let me know what you find out from the result.
M
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gdaporta
Joined: 04 Apr 2006
Posts: 109
Helped: 12
Location: Argentina
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| 18 Jan 2007 14:32 Re: Need explanation on IP address result |
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Hello,
You have assigned two IP Address to your network interface card. You must remove one of them if you are not using it.
For remove one of the two IP address follow the netx steps:
1- Got to: Start -> Configuration -> Network Connections
2- Identify your network connection and open the properties windows (right mouse click and select "Properties" from the list of actions).
3- Select the TCP/IP protocol and then click on the "Properties" button.
4- In the bottom of the TCP/IP properties tab you must have a button of "Advanced Properties", click on it.
5- In the first block you must have two ip addesses, like I show you in the attachment image (My windows XP is in spanish, but is the same):
Select the undesired IP address and then click on the remove button. Then click OK to all the windows and maybe you need to restart your computer.
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GuillerMo (AR)
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magnetra
Joined: 21 Apr 2005
Posts: 260
Helped: 3
Location: 27.45N, 85.20E KTM, NP
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| 19 Jan 2007 17:00 Need explanation on IP address result |
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Thanks for the reply. I have another query. Why do workstations in LAN have their ip address start with 192.168.X.X?
Regards
M
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ahmad_abdulghany
Joined: 12 Apr 2005
Posts: 1321
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Location: Cairo, Egypt
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| 19 Jan 2007 17:23 Re: Need explanation on IP address result |
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| Go to network connection settings, and remove one of them if u don't want it..
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gdaporta
Joined: 04 Apr 2006
Posts: 109
Helped: 12
Location: Argentina
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| 19 Jan 2007 19:44 Re: Need explanation on IP address result |
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| magnetra wrote: |
Thanks for the reply. I have another query. Why do workstations in LAN have their ip address start with 192.168.X.X?
Regards
M |
The IP Addressing have clasess, and on each class there is a reserved blocks of the IP address space for private networks.
In IP terminology the 192.168.0.x is a private network. A private network is an internal (non-Internet) network and not directly with the Internet. This internal network maybe connected to the internet trugh a proxy or a router.
If a device on a private network needs to communicate with other networks, like the internet, needs an equipment to allow the communication. in most cases this equipment is a router and is called gateway.
192.168.0.x is a class C private network. There is another private network available in IP v4:
CLASS A
IP address range: 10.0.0.0 – 10.255.255.255
number of IPs: 16,777,216
Subnet Mask: 0.255.255.255 or /24
CLASS B
IP address range: 172.16.0.0 – 172.31.255.255
number of IPs: 1,048,576
Subnet Mask: 0.0.255.255 or /16
CLASS C
IP address range: 192.168.0.0 – 192.168.255.255
number of IPs: 65,536
Subnet Mask: 0.0.0.255 or /8
The private networks, described in RFC1918 (Request for Comments #1918), has reserved the 192.168.x.x for private networks.
You could obtain RFC1918 at:
http://tools.ietf.org/html/rfc1918
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GuillerMo (AR)
Last edited by gdaporta on 21 Jan 2007 19:06; edited 1 time in total |
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magnetra
Joined: 21 Apr 2005
Posts: 260
Helped: 3
Location: 27.45N, 85.20E KTM, NP
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| 21 Jan 2007 5:59 Re: Need explanation on IP address result |
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| Quote: |
CLASS C
IP address range: 192.168.0.0>/b> – 192.168.255.255
number of IPs: 65,536
Subnet Mask: 0.0.0.255 or /8
When you asked, you said 192.168.x.x,and it's a mistake. |
Gdaporta
You've said that class C private network IP ranges from 192.168.0.0>/b> – 192.168.255.255. But in class C only the last octet should vary for the hosts in the network isn't it?
M
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gdaporta
Joined: 04 Apr 2006
Posts: 109
Helped: 12
Location: Argentina
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| 21 Jan 2007 19:17 Re: Need explanation on IP address result |
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| magnetra wrote: |
| Quote: |
CLASS C
IP address range: 192.168.0.0>/b> – 192.168.255.255
number of IPs: 65,536
Subnet Mask: 0.0.0.255 or /8
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Gdaporta
You've said that class C private network IP ranges from 192.168.0.0>/b> – 192.168.255.255. But in class C only the last octet should vary for the hosts in the network isn't it?
M |
I make a mistake when I said that 192.168.x.x wasn't a private network and I fix it.
CLASS C private networks description is OK. When I said "192.168.0.0 – 192.168.255.255" I was talking about a range or a block, and it range includes hosts and networks.
If take a look at the complete description you could find that the address mask is 0.0.0.255 or /8, so only the last eight bits were used to define the host address, and the other 24 bits were used to define the network address.
When I wrote "192.168.0.0 – 192.168.255.255" I try to said:
192.168.0.x /8 First Class C Private network
192.168.1.x /8 Second Class C Private network
...
...
...
192.168.255.x /8 Last Class C Private network
Do you understand what I am talking about ???
If not, you could take a look at the RFC1918 at h**p://tools.ietf.org/html/rfc1918.
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GuillerMo (AR)
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magnetra
Joined: 21 Apr 2005
Posts: 260
Helped: 3
Location: 27.45N, 85.20E KTM, NP
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| 23 Jan 2007 15:13 Need explanation on IP address result |
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I got it. Thanks gdaporta.
M
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