Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!oakhill!dover!digital!chen
From: chen@digital.sps.mot.com (Jinfu Chen)
Newsgroups: comp.sys.apollo
Subject: Re: Apollo TCP/IP gateways
Message-ID: <48684487.12c9a@digital.sps.mot.com>
Date: 2 Feb 90 18:31:57 GMT
References: <9001311857.AA15864@mwunix.mitre.org> <7122@hacgate.scg.hac.com>
Sender: news@digital.sps.mot.com
Reply-To: chen@digital.sps.MOT.COM (Jinfu Chen)
Organization: Motorola, Inc. Logic IC Div, Mesa, AZ
Lines: 35

In article <7122@hacgate.scg.hac.com> lori@hacgate.hac.com writes:
>
>Yeah, me too.  From one node I get a socket error when I try to talk
>to a printer daemon on another node.  And with rlogin I get
>"network unreachable" to/from anything but the gateway node.
>A little fiddling made that a timeout error instead.

The SR10 TCP/IP manual is quite helpful in terms of debugging/trouble-shooting
problem. With combination of /etc/ping, /usr/ucb/netstat, you can find out if
the router on your gateway behaves properly or not.

From our experience, message "network unreachable" usually means either 
/etc/hosts and /etc/networks don't have the right addresses, or the routed on
the gateway doesn't work. On SR10, the default /etc/rc.local uses -h option
for non-gateway node, which I was told is wrong (from Mentor CSB?). Right now
I use -f -q for non-gateway node, and -f -g for gateway node.

If you are able to get a message about time-out, start playing with netstat
(the /usr/ucb one, not /com/netstat!) options to see if your non-gateway node
can see the network pass-thru the gateway (option -r).

My biggest complaint about Apollo's TCP/IP software is that under SR10.x,
our DSP90 (3mb ram) gateway node can't handle the load as good as under
SR9.7. The tcpd occasionally crashes. Apollo's response is to use an AT-bus
type of machine to be the gateway. However, I still have a hard time to
convince my manager to shell off $1200 for an ethernet card. How can you
answer his question, "if ECMB (ethernet controller on multibus) works under
sr9.7, it should work under sr10, otherwise, ask Apollo for a free upgrade
to an AT-bus card"?

--
Jinfu Chen                  (602)898-5338      |       Disclaimer:
Motorola, Inc.  Logic IC Div., Mesa, AZ        | 
..{somewhere}!uunet!dover!digital!chen        | My employer doesn't pay
chen@digital.sps.mot.com                       | me to express opinions.