Re: slink network problem
Excerpt from rfc188.txt shows that it is a perfectly legal broadcast and
subnetmask.
-------------------
Table 1-2 represents traditional subnetting of a Class C network
address (which is identical to extended Class B subnets).
Subnet Mask # of nets Net. Addr. Host Addr Range Brodcast Addr.
Bits of Subnet hosts/subnet
255.255.255.128 2 nets N.N.N.0 N.N.N.1-126 N.N.N.127
1 bit Class C 126 N.N.N.128 N.N.N.129-254 N.N.N.255
9 bit Class B
255.255.255.192 4 nets N.N.N.0 N.N.N.1-62 N.N.N.63
2 bit Class C 62 N.N.N.64 N.N.N.65-126 N.N.N.127
10 bit Class B N.N.N.128 N.N.N.129-190 N.N.N.191
N.N.N.192 N.N.N.193-254 N.N.N.255
-------------------
One bad thing of using the first subnet is that some old tcp/ip
implementations can refuse to talk to you.
E.g. I had such a net with Linux and win3.11/TCP32b clients, it worked ok.
But when I installed a Cisco router it refused to set up the same subnet
and I was forced to renumber the whole net.
Cheers,
/Karl
-------------------------------------------------------------------------------
Karl Hammar Aspö Data karl@kalle.csb.ki.se
Lilla Aspö 2340 0173 140 57
S-742 94 Östhammar 070 511 97 84 Professionella Linuxlösningar
Sweden
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On Thu, 4 Mar 1999, Michael Schmitz wrote:
> Mikael Aaltonen wrote:
> > I«m not 100% sure about the network interface, but Debian finds it in booting
> > with the name: Sonic ethernet, and it«s located in eth0 ; it doesn«t give any
> > error messages in any situation.
>
> Sonic sounds OK to me for a Quadra 610.
>
> > ifconfig eth0 looks like this:
> >
> > a23:~#ifconfig eth0
> > eth0 Link encap:Ethernet HWaddr 08:00:07:46:E0:D2
> > inet addr:195.197.60.23 Bcast:195.197.60.63 Mask: 255.255.255.192
> > UP BROADCAS RUNNING MULTICAST MTU:1500 Metric:1
> > RX packets:0 errors:0 dropped:42 overruns:0 frame:0
> > TX packets:0 errors:0 dropped: overruns:0 carrier:0
> > collision:0
> > Interrupt:9 Base address:0xa000
>
> Both your broadcast and netmask settings look pretty hosed to me
> (unless you use weird subnetting).
>
> Make sure you have the 'don't disable VBL interrupts' option in the booter
> _un_checked.
>
> Michael
>
>
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