It's the entire class! When this was done, people didn't thing that Internet
would grow so much and address space was considered to be enormous, so they
just decide to reserve the entire class for loopback..
Ednilson Rosa
----- Original Message -----
From: "Howard C. Berkowitz"
To:
Sent: Sunday, August 26, 2001 10:01 PM
Subject: Re: TCP/IP question [7:17343]
>there was a question regarding 127.0.0.1. I understand that the actual
>TCP/IP "software" actually uses this address for self testing.
>when ping localhost {or computer {netbios} name} the actual ip address of
>127.0.0.1 shows up on the screen.
>
>In doing some research one book explains that 127.0.0.1 is not useable but
>the rest of the addresses in the 127 network can be used.
>I went to my trusty 2500 and try to plug in 127.12.12.25 and the router
>would not allow me config the interface with that address.
>
>Is entire 127 network off limits or just 127.0.0.1. is this a cisco thing.
>any explaination is appreicated..
See RFC 1812. It's only defined to be the one address, but most
implementations block the 127 network.
>
>Thank You..
>
>Rico Ortiz,
>Regional Systems Manager,
>Electronic Support Detachment New York
>United States Coast Guard
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i=17378&t=17343
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