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In article <1667@ucqais.uc.edu> rainwatr@ucqais.uc.edu (Donald J. Rainwater) writes:
>I have an IBM PC RT running AIX 2.2.1 that I would like to connect to our
>Ethernet network.  I've run an Ethernet transceiver drop cable (2 10 meter
>sections) to a port on a DELNI, and the RT TCP/IP configuration files
>have been properly set up (as far as I can tell).  There are VAXen on the
>Ethernet that run SRI Multinet (TCP/IP), and one of them is set up as my
>domain name server.
>
>When the RT is started, it tries to configure the ethernet device (net0).
>After a period of time, I get a console message saying that net0 has timed
>out, and that the device has been removed from the configuration.
>
>Has anyone done what I'm attempting?  Any information would be greatly
>appreciated.  Thanks in advance.
>-- 
>Don Rainwater, University of Cincinnati Computer Center
>rainwatr@ucbeh.san.uc.edu
>rainwatr@ucbeh.bitnet
>rainwatr@ucqais.uc.edu

  - check the switches on you Ethernet card to determine the interrupt level
    and the memory address to which it is configured. The values shown below
    in the 'devices' output are working for me and 'il1 9' is a safe 
    interrupt level (it is not to be used exclusively by any devices as far 
    as I know). You could try these values.
    I cannot remember now where the switch positions are described, it is
    probably in the 'Hardware reference Manual' or in one of the Red books

  - Check that the interrupt level selected dos not conflict with another of
    your adapters that want to uses the same level exclusively.
    Required interrupt level are described somewhere under heading 
    "Conflicting Adapter interrupt level". I am sorry to be so vague, but
    I'm writing this from home and do not have any RT books at hand :-).

  - I got some problems when I tried to set the 'inetlen' and 'r_inetlen'
    to a small value (timed out). I recommend to used the values shown below
    in the '/etc/net' file.

  - In the version 2.2.1 of the 'devices' command, it was not possible to set
    the 'il1' value to '9'. You have to manually edit the '/etc/ddi/enet' file
    to set the interrupt value to 9 and to allow interrupt level 9 (see below).
    Then run the devices to set your 'net0' parameters.

------------------------------------------------------------------------------
This is the description of the adapter 'net0' as shown with the
'devices' command:

					Current		Possible
Name	Description			Choice		Choices

rsa     Bus ROM Start Address		98000		80000 - f8000
rea     Bus ROM End Address		99fff		81fff - f9fff
brsa    Bus RAM Start Address		9a000		82000 - fa000
brea	Bus RAM End Address		9ffff		87fff - fffff
[ ... some text deleted ... ]
noi     Num. of Interupt Levels Used	1		1
il1     Intrpt Level # of 1st Intrpt	9		3,4,5,7,9
si1     1st Interupt Level is Shared  	false		true,false
[ ... some text deleted ... ]
nidl    Net ID Length			2    		1 - 255
nidd	Net ID Displacement		12   		0 - 255
srbt	SLIH Ring Buffer Threshold    	10		0 - 255
[ ... some text deleted ... ]

------------------------------------------------------------------------------

This is the content of the '/etc/ddi/enet' file (used to check arguments given
in the 'devices' command as well as to fix the default values) :


default:
[ ... some text deleted ... ]

        il1 = 9 <------------------------------------<manually patched to 9
* Intrpt Level # of 1st Intrpt  * 3,4,5,7,9 <--------<  "            "

[ ... some text deleted ... ]

denet0:
        rsa = 98000
* Bus ROM Start Address         * 80000 - f8000
        rea = 99fff
* Bus ROM End Address           * 81fff - f9fff
        brsa = 9a000
* Bus RAM Start Address         * 82000 - fa000
        brea = 9ffff
* Bus RAM End Address           * 87fff - fffff
        pn = 0
* I/O Port Number on Adapter    * 0,1,2,3

[ ... some text deleted ... ]

il1:
        syschg = none
        vtype = 1
        map = mil1
        display = true
        required = true

[ ... some text deleted ... ]

mil1:
        m3 = 0
        m4 = 0
        m5 = 0
        m7 = 0
        m9 = 0     <--------------------------<Manually added to allow level 9
[ ... some text deleted ... ]
[ EOF ]
------------------------------------------------------------------------------

The '/dev/net0' file:
crw-rw-rwT   1 root     system    22,  0 05 May 14.21 net0

------------------------------------------------------------------------------

The '/etc/net' file for 'net0' entry:
* /etc/net

net0:
        netaddr = 1.6.0.5           <--- Your address here
        inetlen = 1518
        r_inetlen = 1518
        rip = input                 <--- It is a new keyword in AIX 2.2

------------------------------------------------------------------------------


I hope that all this can help you, anyway, you can email me if you have any
other questions, I will try to help.

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