From: istong@stong.org
Date: Wed Oct 20 2004 - 13:53:38 GMT-3
I would hope that Cisco does not ask such a vague question
on the test :) The 127.0.0.0/8 network is reserved (where
127.0.0.1 is typically the loopback address) and is often
filtered on routers if they are using the bogon lists. The
169.254.0.0/16 is assigned by windows xp for example when
you don't have a static assigned or when you have dhcp
enabled but no response is returned. I would say the 169
network is more Microsoft specific than the 127 network if I
had to pick :)
Ian
http://www.ccie4u.com
CCIE Lab Rack Rentals and Lab Scenarios
> So just to make things sure, the "microsoft loopback
> address range" is 127.0.0.0/8 not 169.254.0.0/16??
>
> Cheers,
> JP
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]
> On Behalf Of marc van hoof
> Sent: 27 September 2004 23:42
> To: 'Church, Chuck'; 'marc van hoof'; 'Howard C.
> Berkowitz'; ccielab@groupstudy.com
> Subject: RE: microsoft 1918 address
>
> How much can I talk about this without breaking the NDA ??
> ;)
>
>
> > -----Original Message-----
> > From: Church, Chuck [mailto:cchurch@netcogov.com]
> > Sent: Monday, 27 September 2004 11:00 PM
> > To: marc van hoof; Howard C. Berkowitz;
> > ccielab@groupstudy.com Subject: RE: microsoft 1918
> > address
> > I hope they've never ask a question that ambiguous! It
> > implies that this vendor has their own loopback address,
> > other than 127.0.0.0/8. Conversely, the 169.254.0.0/16
> wouldn't ever be considered loopback, as
> > it doesn't loop anything back. It is considered a bogon
> > (http://www.cymru.com/Documents/bogon-list.html ) and
> should be filtered
> > like any others.
> >
> > P.S. 127.0.0.0/8 is a great block to use for Windows
> > machines. I've yet to be infected once since using it
> > ;)
> >
> > Chuck Church
> > Lead Design Engineer
> > CCIE #8776, MCNE, MCSE
> > Netco Government Services - Design & Implementation
> > 1210 N. Parker Rd.
> > Greenville, SC 29609
> > Home office: 864-335-9473
> > Cell: 703-819-3495
> > cchurch@netcogov.com <-note new address!
> > PGP key:
>
http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x4371A48D
> >
> >
> > -----Original Message-----
> > From: nobody@groupstudy.com
> [mailto:nobody@groupstudy.com] On Behalf Of
> > marc van hoof
> > Sent: Monday, September 27, 2004 2:26 AM
> > To: 'Howard C. Berkowitz'; ccielab@groupstudy.com
> > Subject: RE: microsoft 1918 address
> >
> > While i can't say too much due to NDA's in place...
> > <clears throat>
> > $10* says that if they're asking you to block a
> > "microsoft loopback address" they mean 127.0.0.1 and
> just haven't mentioned that it's also a
> > non-microsoft loopback address...
> >
> > regards,
> > -marc.
> >
> > *Please note, $10 is in Australian currency and
> > therefore useless.
> > -----Original Message-----
> > From: nobody@groupstudy.com
> [mailto:nobody@groupstudy.com] On Behalf Of
> > Scott Morris
> > Sent: Sunday, September 26, 2004 12:39 PM
> > To: 'Howard C. Berkowitz'; ccielab@groupstudy.com
> > Subject: RE: microsoft 1918 address
> >
> >
> > Ahh... I stand corrected! (or sit as the case may be!)
> >
> > Scott
> >
> > -----Original Message-----
> > From: nobody@groupstudy.com
> [mailto:nobody@groupstudy.com] On Behalf Of
> > Howard C. Berkowitz
> > Sent: Saturday, September 25, 2004 10:11 PM
> > To: ccielab@groupstudy.com
> > Subject: RE: microsoft 1918 address
> >
> > At 9:56 PM -0400 9/25/04, Scott Morris wrote:
> > >While that's true, I believe RFC 3330 (if memory
> > serves) came AFTER >Microsoft decided to start handing
> > out these addresses. >
> > >One o' them things. :)
> >
> > No, Microsoft decided to use it after MIT was using it
> > on their networks,
> > according to a conversation I had with Jeff Schiller,
> > MIT network manager
> > and former Security Area Director of the IETF.
> >
> > >
> > >
> > >Scott Morris, CCIE4 (R&S/ISP-Dial/Security/Service
> > Provider) #4713, CISSP,
> > >JNCIP, et al.
> > >IPExpert CCIE Program Manager
> > >IPExpert Sr. Technical Instructor
> > >swm@emanon.com/smorris@ipexpert.net
> > >http://www.ipexpert.net
> > >
> > >
> > >
> > >-----Original Message-----
> > >From: nobody@groupstudy.com
> [mailto:nobody@groupstudy.com] On Behalf Of
> > >James
> > >Sent: Saturday, September 25, 2004 8:05 PM
> > >To: joshua lauer
> > >Cc: John Matus; lab
> > >Subject: Re: microsoft 1918 address
> > >
> > >On Sat, Sep 25, 2004 at 07:47:14PM -0400, joshua lauer
> > wrote: >> I know when you dont have ip assigned ala'
> dhcp or static XP assigns
> > >> you some itself, this is to facilitate "plug and
> > play networking" for
> > >> home user. Those are in the private range, as far as
> > them being >> allocated to MS, I'm not sure..
> > >
> > >It's not a Microsoft thing. It's an industry approved
> > standard addr space
> > >for link local... It's kind of like IPv6's built-in
> link local, except
> > that
> > >it behaves differently in v4.. :)
> > >
> > >hth,
> > >-J
> > >
> > >
> > >> >MCSE, CCNP
> > >> >Office: 818-782-2061
> > >> >Cell: 818-430-8372
> > >> >jmatus@pacbell.net
> > >> >
> > >>
> >
> >_________________________________________________________
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> > >--
> > >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
> > >
> >
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