From: James (james@towardex.com)
Date: Fri Jul 02 2004 - 18:43:17 GMT-3
0/8 works. its no different than 1/8, 2/8, etc, aka CIDR :)
-J
On Fri, Jul 02, 2004 at 03:26:06PM -0400, Howard C. Berkowitz wrote:
> At 3:14 PM -0400 7/2/04, Scott Morris wrote:
> >He didn't ask which were bogons, but which were valid! :)
>
> Ah, Grasshopper, in the virtual public network that is the Internet,
> is bogonosity real?
>
> Seriously, while I suspect Cisco prevents it being coded, and RFC
> 1812 says nto to use it, I wouldn't be surprised if the router can
> actually forward on 0/8. I don't have a Zebra or BGPsim box handy,
> but if I advertised a route in 0/8, I wouldn't be at all surprised if
> it got into the routing table. Processing in the fast path is such a
> critical resource that I can't see checking for 0/8, and I wouldn't
> be surprised if the routing table installation task doesn't check for
> it.
>
> If one really wants to get historical, 0/8 was once the equivalent
> (RFC 760, before even basic classes in RFC 791) of private address
> space.
>
> >
> >-----Original Message-----
> >From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> >Howard C. Berkowitz
> >Sent: Friday, July 02, 2004 2:07 PM
> >To: ccielab@groupstudy.com
> >Subject: Re: Quiz question of the day 20040702 (this one's for you Jamie!)
> >
> >At 1:58 PM -0400 7/2/04, Kenneth Wygand wrote:
> >>Quiz question for the day:
> >>
> >>How many of the following are possible valid, addressable IPv4 addresses:
> >>
> >>1.1.1.1
> >>0.45.34.23
> >>1.0.0.0
> >>1.255.255.0
> >>1.0.0.255
> >>255.223.234.24
> >>10.255.255.255
> >>
> >>Good luck to all!
> >>Ken
> >
> >Some of these clearly won't work. My question is whether you consider
> >"IANA-reserved", but semantically valid addresses, to be valid with respect
> >to your quiz.
> >
> >_______________________________________________________________________
> >Please help support GroupStudy by purchasing your study materials from:
> >http://shop.groupstudy.com
> >
> >Subscription information may be found at:
> >http://www.groupstudy.com/list/CCIELab.html
>
> _______________________________________________________________________
> Please help support GroupStudy by purchasing your study materials from:
> http://shop.groupstudy.com
>
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html
-- James Jun TowardEX Technologies, Inc. Technical Lead Network Design, Consulting, IT Outsourcing james@towardex.com Boston-based Colocation & Bandwidth Services cell: 1(978)-394-2867 web: http://www.towardex.com , noc: www.twdx.net
This archive was generated by hypermail 2.1.4 : Sun Aug 01 2004 - 10:11:46 GMT-3