I mean we dont use this for any other purpose, so we are wasting this ip number 127.0.0.1,so what is the reason that we use it only to check our system NIC or we use it for any other trouble shoooting.
2006-09-03 00:10:46 · 7 answers · asked by jwkhan 1 in Computers & Internet ➔ Computer Networking
I thought we used the whole 127.0.0.0 - 127.255.255.254 range for loopback and tests, not just 127.0.0.1...
2006-09-03 00:17:20 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Within a host system, the loopback interface is normally assigned the address '127.0.0.1' with subnetwork mask '255.0.0.0'. This makes the routing table of the local system set with a routing entry of '127.0.0.0/8', so that packets destined to any address of this '127.0.0.0/8' would be routed internally within the local system. This address block will not be allocated or assigned to any organization or ISP. Any packet with an address of this address block '127.0.0.0/8' cannot appear outside of a host system.
n RFC 3513, the specification says: "The loopback address must not be used as the source address in IPv6 packets that are sent outside of a single node. An IPv6 packet with a destination address of loopback must never be sent outside of a single node and must never be forwarded by an IPv6 router. A packet received on an interface with destination address of loopback must be dropped."
2006-09-03 07:17:22 · answer #2 · answered by stu 1 · 0⤊ 0⤋
Stu's on the nail
put simply 127.0.0.1 is the default internal IP address that ALWAYS resolves back to the COMPUTER you are on PC's (Windows, Linux, etc). Effectively it acts as an internal network (ie it doesn't show anywhere else), BUT it is only visible to that computer.
its a good way of checking if your networking software is working - if you can PING 127.0.0.1 then you knwo the network software is working.
Its often a good choice for database servers running on that PC.
2006-09-03 07:25:46 · answer #3 · answered by Mark J 7 · 0⤊ 0⤋
There are rules that dictate what IP addresses are used for what purposes. 127.0.0.1 is used as localhost but it is used by all PCs, Macs etc, so it is not a waste at all.
That address will change when IPv6 is used, this version can cater for a lot more IP addresses.
2006-09-03 07:21:26 · answer #4 · answered by Gavin T 7 · 1⤊ 0⤋
I guess 127.0.0.1 is the simplest method of verifying that your NIC is well functioning. So its all about it being the simplest method compared to the other methods. If you studied networks from scratch using old operating systems like windows 95, etc, then you will understand this.
2006-09-03 07:46:34 · answer #5 · answered by worldcomingtoanend 2 · 0⤊ 0⤋
Go ahead, re-write all the programming, test applications, on 14 platforms! Fly in the face of International Standards!
I'm sure that you are a teen and know everything, so start telling us how we should "do it"!
You might start here, with your education: http://yolinuxos.com
You could try this: http://pclinuxos.com
2006-09-03 07:27:10 · answer #6 · answered by Anonymous · 0⤊ 0⤋
because its a local address... leave it... it can only be used by people on that computer or in the LAN!
2006-09-03 07:13:01 · answer #7 · answered by Tidus Reeves 2 · 0⤊ 0⤋