Netmap File

[Rhonda Barlow]

I have been assigned a project that involves using QNX. I am very new
to this OS and am setting up a training mock network in my office. I
have 4 nodes with arcnet cards connected to a hub. I have tried two
different netmap files one being a one line saying one-to-one the other
with a list of all the nodes like this

1 2 t1
2 2 t2
3 2 t3
4 2 t4

Neither netmap file allowed me to 'see' the other nodes on the network.
Is there another netmap file I could try to get these nodes talking to
each other? What am I doing wrong? Thanks

Rhonda
Western Resources
Research and Developement

[Bruce Edge]

This is not a direct answer to your question, but it is a solution.
Delete the automap files, all of them. Then, use Mario Charest's automap:

http://www.zinformatic.com/Automap.htm

(You're welcome Mario :-)

We've been using it for years, and it makes QNX networking totally seamless.
In my opinion, netmap files are a PITA. If you have to change a failed NIC,
you have to edit every netmap file on you LAN.

-Bruce.

--
Bruce Edge be...@sattel.com
Sattel Global Networks 818.709.6201 x122

[Ian Basham]

Some quick thoughts;

- each node must have an identical netmap file
- the netmap program must be run on each node (usually 'netmap -f' in
sysinit file or 'netstart' in sysinit file)
- could also be a licensing problem. If you type in 'licinfo -a' on
each machine, you should see a line that reads something like 'qnx
0/4', meaning 4 qnx licenses.
- if you just type in 'netmap' on each node, do you see all the
entries in your netmap file?
- the second column in the netmap file should probably be 1, meaning
logical network 1

>>>>>>>>>>>>>>>>>> Original Message <<<<<<<<<<<<<<<<<<

On 10/25/99, 11:01:29 AM, Rhonda Barlow <infi...@idir.net> wrote
regarding Netmap File:

[Mitchell Schoenbrun]

A quick question. Did you start Net.arcnet
with the -l 2 parameter? If not, Net.arcnet is
running lan 1, rather than the lan 2 you list
in the map file.

Mitchell Schoenbrun --------- masc...@pobox.com

[Rhonda Barlow]

Thank you all for your help. I did get the system up and running late
yesterday. The default Net.arcnet did use the -l2 parameter and the
ethernet driver was using -l1. I changed those in the sysinit file,
corrected a problem with the BIOS/ISA legacy device/IRQ and it started
up fine! My netmap file was right on...apparently there were other
problems not allowing this to work.

Thanks again to everyone,

Rhonda

[Nicolae P. Costescu]

Rhonda
Here's what I've done to avoid updating netmaps on every machine on the
network (and this solution is free:) I have set up node 1 as the "server"
in that it has the only netmap file with all entries for all machines.
All other nodes just get a netmap file with one entry, the entry for node
1.

Then when the PC boots, it executes

Net&

# The driver creates an entry in this node's in memory netmap
Net.tulip (or your driver here)&

# This gets this node talking to node 1 (the local netmap file in
/etc/config/netmap on
# this node has only 1 entry, the entry for node 1. So now the in memory
netmap
# on this node has entries for node 1 and for itself.
netmap -f

# This builds the nodemap on this node from the file on node 1. This way I
only
# have to add/delete entries on node 1's /etc/config/netmap.
netmap -F //1/etc/config/netmap

# Kick nameloc on node 1 so don't run it locally
nameloc -k 1

If you set things up like this, you only need to change nodemap entries on
1 PC (the server). Obviously, if you change the server's network card,
you'll have to update the netmap entries on all other pcs :) but typically
you just add or remove nodes from the network without messing with the
server.

Hope this is helpful,
Nick

Rhonda Barlow wrote:

> I have been assigned a project that involves using QNX. I am very new
> to this OS and am setting up a training mock network in my office. I
> have 4 nodes with arcnet cards connected to a hub. I have tried two
> different netmap files one being a one line saying one-to-one the other
> with a list of all the nodes like this
>
> 1 2 t1
> 2 2 t2
> 3 2 t3
> 4 2 t4
>
> Neither netmap file allowed me to 'see' the other nodes on the network.
> Is there another netmap file I could try to get these nodes talking to
> each other? What am I doing wrong? Thanks
>
> Rhonda
> Western Resources
> Research and Developement

--

****************************************************
Quality Real-Time Systems
Tel: 864 656 7708 / Fax: 864 624 9155
http://www.qrts.com

[Mitchell Schoenbrun]

This is a good solution if you can live with its one flaw.
Node one becomes a single point of failure. Some systems
are designed with a critical node, in which case this adds
no additional problem.