Interesting Question

  • Thread starter Thread starter Bharani
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Bharani

Dear Reader

Does any one have any idea abt the mathematical concept behind the
127.X.X.X for being Loop Back address

Thanks in Advance
Bani
 
Bharani wrote in
Dear Reader

Does any one have any idea abt the mathematical concept behind the
127.X.X.X for being Loop Back address
Click to expand...

It's nearly always specifically 127.0.0.1
and I don't know what "mathmetatical" has to do with it. It is simply
a convention or rule.
 
Valid question, Bharani, but I haven't a clue. But like everything else
IP, things tend to make more sense when you look at the binary. The
only loopback address I know of is 127.0.0.1, which in binary, is:

11111111000000000000000000000001

It's at least a nice round binary number. There probably was some
mathematical reason for choosing this as the loopback address, but I
don't know what it is.
 
Mark V wrote in
Bharani wrote in
Dear Reader

Does any one have any idea abt the mathematical concept behind
the
127.X.X.X for being Loop Back address
Click to expand...
[ ]
It is simply a convention or rule.
Click to expand...

RFC 3330
"
127.0.0.0/8 - This block is assigned for use as the Internet host
loopback address. A datagram sent by a higher level protocol to
an address anywhere within this block should loop back inside the
host. This is ordinarily implemented using only 127.0.0.1/32 for
loopback, but no addresses within this block should ever appear
on any network anywhere [RFC1700, page 5].
"

RFC 1700
"
(g) {127, <any>}
Internal host loopback address. Should never appear outside a host.
"
 
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