From: "Lewis G Rosenthal" Received: from [192.168.100.201] (account lgrosenthal HELO [192.168.100.22]) by 2rosenthals.com (CommuniGate Pro SMTP 5.1.3) with ESMTPSA id 1872467 for os2-wireless_users@2rosenthals.com; Wed, 23 Apr 2008 14:54:46 -0400 Message-ID: <480F85F6.3010301@2rosenthals.com> Date: Wed, 23 Apr 2008 14:54:46 -0400 Organization: Rosenthal & Rosenthal, LLC User-Agent: Mozilla/5.0 (OS/2; U; Warp 4.5; en-US; rv:1.8.1.13) Gecko/20080326 MultiZilla/1.8.3.4e SeaMonkey/1.1.9 MIME-Version: 1.0 To: OS/2 Wireless Users Mailing List Subject: Re: [OS2Wireless] Link-Local Addresses (LLA) - Does anyone actually use them? References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Hi, Ed! On 04/23/08 03:01 am, Ed Durrant thus wrote : > Lewis G Rosenthal wrote: >> Prompted by a recent discussion on the T60/T61 eCS list and via PM, I >> am wondering if anyone has any real experience using bogus >> addresses...er...Zeroconf...er...Automatic Private IP Addresses (in >> Micro$oft-speak)? >> >> A couple Wikipedia links of interest, and the real meat and potatoes: >> >> http://en.wikipedia.org/wiki/Link-local_address >> http://en.wikipedia.org/wiki/Automatic_Private_IP_Addressing >> http://tools.ietf.org/html/rfc3927 >> >> Personally, I stay away from these things, but I do know some Mac >> users who participate in wireless peer networks and who do use them >> successfully. Naturally, the IPv6 implementation doesn't have much >> use for us at this point in time (as OS/2 does not ahve an IPv6-aware >> IP stack!), but XWLAN does have the ability to use them and eCS 2.0 >> RC4 seems to have an interesting entry in SETUP.CMD called "llaecs" >> (see http://ewiki.ecomstation.nl/ecomstation20rc4whatsnew ). >> >> TIA >> > I believe another name for this is APIPA. > > This kicks in when there is no DHCP server available on a network and > you have not configured a static IP address. It defaults to using a > class B (i.e. 255.255.0.0) range starting with 169.254.0.1 and going > up to 169.254.255.254 it is a random selection. > My understanding is that the clients (peers) decide among themselves which address(es) in the pool is/are available, to avoid conflicts. > As far as I know this is mainly of use on private networks as without > static data or DHCP systems don't know where to find the gateway to > get out to other networks such as the internet. > Right. > I'm not sure if OS/2 has support for this or not - it may have as it > is an approved standard - not just an M$ thing. > At least to some extent, given that new llaecs utility now added to \MPTN\BIN\SETUP.CMD and with XWLAN's profile options (Ad Hoc, etc.). I see a number of newer HP printers with the ability to use these funny addresses. -- Lewis ------------------------------------------------------------ Lewis G Rosenthal, CNA, CLP, CLE Rosenthal & Rosenthal, LLC Accountants / Network Consultants New York / Northern Virginia www.2rosenthals.com eComStation Consultants www.ecomstation.com Novell Users Int'l www.novell.com/openenterpriseserver Need a managed Wi-Fi hotspot? www.hautspot.com ------------------------------------------------------------