Provided you only use /31 on p-p links and with a
classless routing protocol, there should be no problem.
Many large ISPs use /31s without incident. Cisco, Juniper
et al all support /31s.
The question was not whether /31s are possible - this is
a non-issue. What I wanted to know is whether or not
the Nokia IP130 supported them.
Cameron
-----Original Message-----
From: vtlists@wyae.de [mailto:vtlists@wyae.de]
Sent: Wednesday, 23 February 2005 4:07 PM
To: firewalls@securityfocus.com
Subject: Re: Nokia IP130 support for 31 bit mask
Good morning!
On Tue, 22 Feb 2005 14:45:40 -0300
Ramoni <ramoni@databras.com.br> wrote:
Sorry, but with a /31 you'll only have the network and broadcast
addresses. I think its impossible ( by the concept) to do it, and if
it would be possible, would be useless. On Tuesday 22 February 2005
03:26, Cameron.Dry@didata.com.au wrote:
Does anyone know if this box supports /31 interface addresses ?
Well, it is not impossible. You can use a /31 mask with 2 systems - one
using the network base as its IP address, one using the broadcast one.
It is not nice and can lead to problems - but can be done. Hell, I've
even seen a firewall with an IP address 10.0.0.0, connected to several
10.* addresses in the various interfaces (including one 10.0.0.0/24 of
course). Routing (or analysis thereof) was hell of a headache but it
worked...
Bye
Volker
--
Volker Tanger http://www.wyae.de/volker.tanger/
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