Tim Wilkinson wrote:
> OK please be gentle, it must be 15 years since I last touched a vax./vms
>
> So VMS 7.3 installed and working on a subnetted network. (tcp on a vax. new
> to me, it was all decnet and lat in my day).
>
>
> So. my company use the RFC1918 scheme globally the UK has 10.32.0.0/12
> assigned to it. When we get to my home I have a wonderfully generous /28
> subnet mask applied.
>
> so whilst my dhcp router dishes out address with a netmask of
> 255.255.255.240 which is picked up by my PC/linux boxes etc. I issue the
> command on my vms system
>
>
> TCPIP> ifconfig -a
> LO0: flags=100c89
> inet 127.0.0.1 netmask ff000000 ipmtu 4096
>
> QE0: flags=c63
> inet 10.34.220.88 netmask ff000000 broadcast 10.255.255.255 ipmtu 1500
>
> QE1: flags=c43
> inet 192.168.17.125 netmask ffffff00 broadcast 192.168.17.255 ipmtu
> 1500
>
> TN0: flags=80
>
> so interface QE0 which is assigned using dhcp is picking up the correct ip
> address, but ignores the subnet mask and assigns the wrong mask of
> ff000000, and incorrect broadcast address.
>
> my pc etc on the same network gives me
> Ethernet adapter Local Area Connection:
>
> Connection-specific DNS Suffix . : netgear.com
> IP Address. . . . . . . . . . . . : 10.34.220.89
> Subnet Mask . . . . . . . . . . . : 255.255.255.240
> Default Gateway . . . . . . . . . : 10.34.220.81
> So I know my router/dhcp configs are right.
>
> I had seen similar in old systems years ago, where ip stacks did not
> properly support subnet masking. But I would have thought DEC would have got
> this right.
>
> Advice please guys how do I fix this
>
>

Which TCP/IP stack are you using? There is one available from HP which
is known as "The Ultrix Connection" or "UCX". There are also a few
third party TCP/IP stacks available; "Multinet" from TGV, Inc is one such.

FWIW I configured my VMS systems without the benefit of DHCP. My router
assigns addresses from "100" up. My HP printer and all the VMS,
Solaris, and Linux systems have static addresses (1-99) configured using
the tools in SYS$MANAGER:TCPIP*. This allows my PC to KNOW where to
find my Alphas, my VAXen (if I ever power them up again) and my Sun
Ultra 10 workstations.

--
draco vulgaris