On Tuesday, 10/06/2020 at 08:30 GMT, David Boyes <dboye...@gmail.com> 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 alan_altm...@us.ibm.com IBM Endicott ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
