[Info-vax] SOLVED: Re: tcpip gateway question

[Ken Fairfield]

On Oct 10, 12:16 pm, urbancamo <m... at wickensonline.co.uk> wrote:
> I have a NetBSD box on the network that is the DHCP server for all
> boxes on subnet 192.168.1.255. For boxes without a fixed IP address,
> the DHCP server will serve requests. For example, when I start up my
> laptop with networking I get the following messages from the DHCP
> server:
>
> Oct  4 09:39:23 dell7500 dhcpd: DHCPDISCOVER from 00:1d:0d:bb:d2:69
> via ex0
> Oct  4 09:39:24 dell7500 dhcpd: DHCPOFFER on 192.168.1.67 to 00:1d:
> 0d:bb:d2:69 via ex0
> Oct  4 09:39:24 dell7500 dhcpd: DHCPREQUEST for 192.168.1.67
> (192.168.1.252) from 00:1d:0d:bb:d2:69 via ex0
> Oct  4 09:39:24 dell7500 dhcpd: DHCPACK on 192.168.1.67 to 00:1d:
> 0d:bb:d2:69 via ex0
>
> This works great - the DHCP server has the following configuration:
>
> # Set parameters for the 192.168.1.0/24 subnet.
> subnet 192.168.1.0 netmask 255.255.255.0 {
>         range 192.168.1.21 192.168.1.70;
>         default-lease-time 604800;
>         option subnet-mask 255.255.255.0;
>         option domain-name-servers 158.152.1.58, 158.152.1.43;
>         option domain-name "appsoftint.co.uk";
>         option routers 192.168.1.20;
>
> So it will automatically assign IP addresses between 192.168.1.21 and
> 192.168.1.70.
> If I want a static IP address for a box (such as the ZX6000 or the
> DS10L) then previously adding the following entries in the dhcpd.conf
> file did the trick:
>
>        host zx6000 {
>                hardware ethernet 00:30:6e:f3:2c:a5;
>                fixed-address 192.168.1.230;
>        }
>
> However, with decnet enabled this no longer works. I updated the
> configuration to contain the decnet MAC address assigned to the
> interface:
>
>        host zx6000 {
>                hardware ethernet aa:00:04:00:fb:04;
>                fixed-address 192.168.1.230;
>        }
>
> The request is granted, but the configuration is incorrect - I can
> ping the DHCP server but not the gateway (in my case my ADSL router)
> which is very strange as they are both on the same subnet.

Since you want a fixed address for the zx6000, is there a
reason you insist on having the DHCP server do that?  For
my PWS 600au (VMS 8.3), I just configured TCPIP Services
with the requisite info and never query the DHCP server (a
Verizon FIOS router).  I admit, I did try to get DHCP working,
but had no success, and I don't even have DECnet configured.

There's no conflict between DHCP servering one range of
addresses, and individual systems (statically) configured
to addresses outside that range.  It's a lot easier in the
end...

    -Ken