Path: utzoo!attcan!uunet!steinmetz!vdsvax!barnett@vdsvax.steinmetz.ge.com
From: barnett@vdsvax.steinmetz.ge.com (Bruce G. Barnett)
Newsgroups: comp.protocols.tcp-ip
Subject: Broadcast RPC question
Keywords: SunOS 4.0, broadcast RPC, Boot
Message-ID: <5763@vdsvax.steinmetz.ge.com>
Date: 12 Oct 88 16:51:06 GMT
Sender: barnett@vdsvax.steinmetz.ge.com
Reply-To: barnett@steinmetz.ge.com (Bruce G. Barnett)
Organization: GE Corp. R & D, Schenectady, NY
Lines: 53

We have a problem on our network with diskless Suns running SunOS 4.0.
At times they are unable to boot, due to some condition on our
network.

I have been working with Sun on this for several months and still do not have
a solution OR workaround.

Our environment:
	Company wide network:	3.0.0.0	(ge-net)
	Local Subnet:		3.1.4.0	(ge-crd-net)
		Netmask:	255.255.252.0
		Broadcast:	3.1.4.0
	About 800 hosts in the local subnet
	Type of systems on our network: You name it. We got it.

When a 4.0 diskless client boots up, it does a broadcast RPC, using UDP,
to the 3.0.0.0 network.

Since Sun hasn't fixed the problem yet, I am trying (in the meantime) to get
the other vendors to fix their software. (Desperate times indeed!)

However, one DEC representitive has told me that Sun is doing the
Wrong Thing, and it's not DEC's problem.

Here are the packets that *I Think* are causing the problem:

	Bruce G. Barnett

======================DATA FOLLOWS=====================

Example packet send from diskless client (via etherfind)

UDP from grymoire.1023 to ge-net.sunrpc  108 bytes
 ff ff ff ff ff ff 08 00 20 01 9c 27 08 00 45 00
 00 80 00 00 00 00 ff 11 b0 49 03 01 05 23 03 00
 00 00 03 ff 00 6f 00 6c 00 00 1f 73 91 f3 00 00
 00 00 00 00 00 02 00 01 86 a0 00 00 00 02 00 00
 00 05 00 00 00 01 00 00 00 18 1f 74 bb f0 00 00
 00 00 00 00 00 00 00 00 00 01 00 00 00 01 00 00
 00 01 00 00 00 00 00 00 00 00 00 01 86 ba 00 00
 00 01 00 00 00 01 00 00 00 14 00 00 00 01 00 00
 00 03 00 00 00 01 00 00 00 05 00 00 00 23

Typical response from several machines:

ICMP from ge-net to grymoire dst unreachable bad port
  bad packet was: UDP from grymoire.1023 to ge-net.sunrpc  108 bytes
 08 00 20 01 9c 27 aa 00 04 00 60 10 08 00 45 00
 00 38 02 dc 00 00 ff 01 ad c5 03 00 00 00 03 01
 05 23 03 03 a8 6c 00 00 00 00 45 00 00 80 00 00
 00 00 ff 11 00 00 03 01 05 23 03 00 00 00 03 ff
 00 6f 00 6c 00 00
--