Date: Wed, 31 May 1995 17:55:55 +0200 (MET DST) From: Christoph Kukulies <kuku@gilberto.physik.rwth-aachen.de> To: seki@sysrap.cs.fujitsu.co.jp (Masahiro SEKIGUCHI) Cc: freebsd-hackers@freefall.cdrom.com (user alias) Subject: Re: mcast and sd Message-ID: <199505311555.RAA01837@gilberto.physik.rwth-aachen.de> In-Reply-To: <9505311154.AA12666@seki.sysrap.cs.fujitsu.co.jp> from "Masahiro SEKIGUCHI" at May 31, 95 08:54:27 pm
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> > >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
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