"Lange, Eric" wrote:
>
> It's wasn't supported until 12.2(4)T.
>
> Check it out. This is from a 1750 running 12.2(4)T:
>
> > interface Loopback9
> > ip address 111.11.1.1 255.255.255.254
>
> It works!
For a loopback, so does a /32 :-)
Jeff
Message Posted at:
http://www.groupstudy.com/f
I would like to amplify Howard's comments below and doubly
stress two words in his one line explanation,
namely "controlled" and "violation".
In terms of **Internet Gateways** (read routers) this is an
acceptable practice for what the RFC describes in its
title, "Using 31-Bit Prefixes on IP
>I read the RFC, so I guess it can be used. My bad.
>
>AM I correct in saying that one interface will be assigned the all zero
>subnet as it's IP and the other will be assigned the broadcast IP address
>for that subnet?
>
>Steve
Yes. It's a controlled violation of that addressing rule.
>
>
>
>
t: Friday, November 30, 2001 8:34 AM
> To: [EMAIL PROTECTED]
> Subject: Re: /31 subnet (now with info link) [7:27802]
>
>
> Just tried it and the router dosen't even allow an interface to use a /31
> mask, even with ip subnet-zero enabled.
>
>
> ""VoIP Guy&qu
34 AM
To: [EMAIL PROTECTED]
Subject: Re: /31 subnet (now with info link) [7:27802]
Just tried it and the router dosen't even allow an interface to use a /31
mask, even with ip subnet-zero enabled.
""VoIP Guy"" wrote in message
[EMAIL PROTECTED]">news:[EMAIL PRO
Just tried it and the router dosen't even allow an interface to use a /31
mask, even with ip subnet-zero enabled.
""VoIP Guy"" wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> I read the RFC, so I guess it can be used. My bad.
>
> AM I correct in saying that one interface will b
I read the RFC, so I guess it can be used. My bad.
AM I correct in saying that one interface will be assigned the all zero
subnet as it's IP and the other will be assigned the broadcast IP address
for that subnet?
Steve
""VoIP Guy"" wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]
I know that, but the network and broadcast addresses are unusable. Thus the
two good addresses for hosts.
""Craig Columbus"" wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> With a /30 you use 4 IP addresses (network, 2 node, 1 broadcast). You
save
> addresses with a /31.
> Here'
With a /30 you use 4 IP addresses (network, 2 node, 1 broadcast). You save
addresses with a /31.
Here's a link with more info:
http://www.ietf.org/rfc/rfc3021.txt?number=3021
Thanks,
Craig
At 08:32 AM 11/30/2001 -0500, you wrote:
>Maybe I'm missing something, but there are only 2 useable addr
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