[amazonify]0596528353:right[/amazonify]Single ethernet address can be assigned with multiple IP. In unix/linux word this feature called ip alias. I don’t know this feature name in windows. I post this because my friend work in a company who has multi lan connection and ask me if how he can get multiple address for his ethernet card laptop 🙂

My work place also use multi lan. A few gateway and a few subnet.

Here’s the steps to assign multiple ip in single NIC in Windows XP :

1. Open Control Center and double click on Network Connections.

2.Click on Properties

3. Scroll down, find Internet Protocol and double click

4. Click Advanced

5. Add the address by click Add button. Make sure entering right subnet mask. If not sure, ask technician or network guy 🙂

6. You can use multiple dns too, for example using OpenDNS.

7. Click on DNS tab to enter those IP followed by click OK button.

8. Testing time, ping is common way to test connection for each LAN.

Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.

C:\Documents and Settings\Administrator>ping 192.168.1.1

Pinging 192.168.1.1 with 32 bytes of data:

Reply from 192.168.1.1: bytes=32 time<1ms TTL=64
Reply from 192.168.1.1: bytes=32 time<1ms TTL=64
Reply from 192.168.1.1: bytes=32 time<1ms TTL=64
Reply from 192.168.1.1: bytes=32 time<1ms TTL=64

Ping statistics for 192.168.1.1:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 0ms, Average = 0ms

C:\Documents and Settings\Administrator>ping 172.88.1.2

Pinging 172.88.1.2 with 32 bytes of data:

Reply from 172.88.1.2: bytes=32 time<1ms TTL=64
Reply from 172.88.1.2: bytes=32 time<1ms TTL=64
Reply from 172.88.1.2: bytes=32 time<1ms TTL=64
Reply from 172.88.1.2: bytes=32 time<1ms TTL=64

Ping statistics for 172.88.1.2:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 0ms, Average = 0ms

C:\Documents and Settings\Administrator>ping 10.10.12.10

Pinging 10.10.12.10 with 32 bytes of data:

Reply from 10.10.12.10: bytes=32 time<1ms TTL=64
Reply from 10.10.12.10: bytes=32 time<1ms TTL=64
Reply from 10.10.12.10: bytes=32 time<1ms TTL=64
Reply from 10.10.12.10: bytes=32 time<1ms TTL=64

Ping statistics for 10.10.12.10:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 0ms, Average = 0ms

C:\Documents and Settings\Administrator>

Done, setting multiple IP and multple DNS accomplished 😉