^C <Enter>
Regards,Anderson
Em quarta-feira, 7 de outubro de 2020 13:53:53 BRT, Alan Altmark
<[email protected]> escreveu:
On Tuesday, 10/06/2020 at 08:30 GMT, David Boyes <[email protected]>
wrote:
> Or make sure you set a unique MAC address for each network adapter in
the CP
> directory and use DHCP to assign a static address to each MAC address.
Ding ding ding ding ding! I recommend the use of persistent DHCP to all
my clients, even though it means you have to manage static MAC
assignments. (I use a DIRMAINT exit to assign MAC addresses to each
interface.) I have talked up DHCP's ability to use a user ID instead of a
MAC address, as Ray describes, but it makes very little impact since
"that's not how we do things here".
> It's long overdue for the mainframe network stacks to permit this method
of
> address management. DHCP/DHCP6 is reliable, highly scalable and handles
static
> address assignments with ease. It handles both IPv4 and IPv6 easily and
is one
> less unique thing about mainframes -- it's what the distributed folks
use for
> their environments at massive scale. Why be pointlessly
difficult/different?
> The VM, VSE and TPF stacks are all layer 2 capable, and could easily be
> convinced to act as DHCP clients.
IMO, the ease of making VM TCP/IP come up with a different configuration
file based on external criteria eliminates the need for a DHCP client. I
wouldn't mind it, but there are bigger fish to fry.
I'm also beginning to detect a pattern in DR environments: The z/VM
systems themselves aren't replicated. There is as often as not a
cold/warm/hot z/VM system already in the DR site with a site-specific
configuration. Linux data is replicated, plus any "utility" data used by
the sysprogs.
Alan Altmark
Senior Managing z/VM and Linux Consultant
IBM Systems Lab Services
IBM Z Delivery Practice
ibm.com/systems/services/labservices
office: 607.429.3323
mobile; 607.321.7556
[email protected]
IBM Endicott
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