From owner-freebsd-hackers Wed May 31 08:50:30 1995 Return-Path: hackers-owner Received: (from majordom@localhost) by freefall.cdrom.com (8.6.10/8.6.6) id IAA17869 for hackers-outgoing; Wed, 31 May 1995 08:50:30 -0700 Received: from campino.informatik.rwth-aachen.de (campino.Informatik.RWTH-Aachen.DE [137.226.225.2]) by freefall.cdrom.com (8.6.10/8.6.6) with SMTP id IAA17283 for ; Wed, 31 May 1995 08:43:48 -0700 Received: from gilberto.physik.rwth-aachen.de by campino.informatik.rwth-aachen.de (4.1/campino-7) id AA13030; Wed, 31 May 95 17:43:08 +0200 Received: (from kuku@localhost) by gilberto.physik.rwth-aachen.de (8.6.8/8.6.9) id RAA01837; Wed, 31 May 1995 17:55:55 +0200 Message-Id: <199505311555.RAA01837@gilberto.physik.rwth-aachen.de> Subject: Re: mcast and sd To: seki@sysrap.cs.fujitsu.co.jp (Masahiro SEKIGUCHI) Date: Wed, 31 May 1995 17:55:55 +0200 (MET DST) Cc: freebsd-hackers@freefall.cdrom.com (user alias) In-Reply-To: <9505311154.AA12666@seki.sysrap.cs.fujitsu.co.jp> from "Masahiro SEKIGUCHI" at May 31, 95 08:54:27 pm From: Christoph Kukulies Reply-To: Christoph Kukulies X-Mailer: ELM [version 2.4 PL23] Content-Type: text Content-Length: 1544 Sender: hackers-owner@FreeBSD.ORG Precedence: bulk > > >MOZART > >opens sd > >opens a new session > > > >BLUES (runs mrouted connected to MBONE) > >opens sd (mozarts' session does not show up) > >opens a new session > >MOZART immediately after that sees the session on blues > > If this is the exact order you did, there is nothing strange at all. > > Try creating another session on MOZART when sd is running on BLUES. > It will immediately shown on sd on BLUES. In fact, it does not appear on BLUES. I don't see any session at all on BLUES (the machine running mrouted to the MBONE). I just got an interesting hint from Mark Tinguely and I'm trying to track it. > > Or, if you just wait 5 minutes or more, the "missing" session will be > shown on BLUES. It did not show in half an hour. > > It is a normal behaviour of sd. > > If an sd creates a new session, it sends packets to notify a session > is alive. The packet is sent either (1) immediately after the session > is created, or (2) every 5 minutes. So, when you start sd, you have to > wait max. 5 minutes before the sd shows all pre-existing sessions. > > It may be hard to recognize this behaviour, since sd plays a trick > with the file ~/.sd_cache to reduce the delay. > > Please verify the above scenario. I believe presence of mrouted is > irrelevant. > --Chris Christoph P. U. Kukulies kuku@gil.physik.rwth-aachen.de FreeBSD blues.physik.rwth-aachen.de 2.0-BUILT-19950531 FreeBSD 2.0-BUILT-1995 0531 #0: Wed May 31 06:16:35 MET DST 1995 root@blues.physik.rwth-aachen.d e:/usr/src/sys/compile/BLUESGUS i386