From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Ranch Subject: Re: Netrom: Quality issue Date: Sun, 07 Jul 2013 20:40:25 -0700 Message-ID: <51DA34A9.5070108@trinnet.net> References: <51D79AE6.5030208@junglevision.com> <51D7A082.1000500@junglevision.com> <51D7AC41.6060606@junglevision.com> <51D7AE2B.3070408@junglevision.com> <51D852B6.3060401@trinnet.net> <20130706202807.GB18314@x-berg.in-berlin.de> <51D905C2.1000301@junglevision.com> <51D99E83.9000604@trinnet.net> <51D9B74E.7030603@junglevision.com> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <51D9B74E.7030603@junglevision.com> Sender: linux-hams-owner@vger.kernel.org List-ID: Content-Type: text/plain; charset="us-ascii"; format="flowed" To: Cathryn Mataga Cc: Thomas Osterried , linux-hams Maybe a way to fix this is with a new parameter, say: # ax25_name min_obs def_qual worst_heard_qual verbose worst_calced_qual 1 5 120 120 0 120 --David On 07/07/2013 11:45 AM, Cathryn Mataga wrote: > On 7/7/2013 9:59 AM, David Ranch wrote: >> >> I agree with Cathryn that this is a "as designed" issue though I'd >> argue we should CHANGE it. Specifically, the Linux netromd man page >> says "RECEIVED from a routing broadcast" where as >> > > My concern about changing this is that for a configuration like the one > here, basically nodes will only get added if they come in as quality > 255. That is the (254*120 + 128)/256 = 119. > > # ax25_name min_obs def_qual worst_qual verbose > # > > 1 5 120 120 0 > > >> Kantronics KPC3+ - >> http://www.kantronics.com/documents/kpc-3plus_manual_RevD.pdf >> " >> Page 137 >> . . . >> When K-Net hears neighbor node (A) transmit a node broadcast, it >> computes the quality to distant nodes (B, C, D, etc.) contained in >> that broadcast >> by using the quality that is assigned to neighbor node (A). If the >> ***resultant >> computation*** is less than MINQUAL, the distant nodes (B, C, D, etc.) >> are not >> added to the nodes table (see QUALITY command). >> -- >> >> >> I also looked around for finding the default for the X1J TNC but >> couldn't find a clear citable URL but I believe the default there is 140. >> >> --David >> >> >> >> >>> Err, I don't think it's really a bug. He's probably got a node coming >>> in at quality 120 and then it does (120 * 120 +128)/256 Maybe update >>> the man page to explain what's going on. >>> >>> worstqual this is the worst quality node received >>> from a routing broadcast that will be added >>> to our routing table. >>> >>> -- >>> To unsubscribe from this list: send the line "unsubscribe linux-hams" in >>> the body of a message to majordomo@vger.kernel.org >>> More majordomo info at http://vger.kernel.org/majordomo-info.html