[Info-vax] DNS issues with OpenVMS

[Hans Bachner]

Stephen Hoffman schrieb am 18.04.2023 um 17:43:
> On 2023-04-18 13:11:52 +0000, Single Stage to Orbit said:
> 
>> I have installed and configured OpenVMS x86.
>> DHCP working well. Picks up IP address quite happily, configures
>> gateway to the router happily.
>> One thing I can't figure out is how to get it to hand off DNS lookups
>> to my router which I need to resolve machine names on my network.
>> I can use either serial over TCP/IP or SSH into the machine using IP
>> addresses quite easily.
>> Any ideas?
> 
> Go static. Or, well, let us know what you find.
> 
> I've never gotten OpenVMS working reliably with DHCP. Yeah, it 
> sorta-kinda works, probably works well enough to be used as a 
> workstation, but I always end up chasing something gone weird or gone 
> wrong when deploying OpenVMS as a server with DHCP addressing.
> 
> Accordingly, I always set OpenVMS with a static IP address, [...]

Well, I've been running most of my VMS nodes in the lab (at least with 
V7 and newer) as DHCP clients in my lab for almost two decades.

They receive almost everything they need, like default gateway and dns 
servers. The only thing I could not get working (but didn't try much) 
was to get the NTP server list via DHCP as well.

The more permanent nodes are configured with fixed addresses on the DHCP 
server and are bound to either MAC address or hostname. Using DHCP saved 
me modifying the subnet mask on all my (VMS, Linux, Windows) boxes when 
expanding / reconfiguring the lab network. All nodes received the new 
mask via DHCP.

> I'm not aware of any DCL-level tooling that allows easy access to the lease information, either. 

$ SHOWDHC SYS$SYSDEVICE:[TCPIP$DHCP]WE0.dhc

shows what the IP stack received via DHCP.

Hans.