Hi All, This can't be multihoming as I only have one address
On Thu, Jun 4, 2020 at 1:49 PM Douglas von Roeder via 4D_Tech <[email protected]> wrote: > > Chuck: > > Good question. How is multi-homing handled? > > The web server can listen on multiple IP addresses but I've never seen > anything that discusses how the application/data server handles that. > > -- > Douglas von Roeder > 949-910-4084 > > > On Thu, Jun 4, 2020 at 7:47 AM Chuck Miller via 4D_Tech < > [email protected]> wrote: > > > OK I guess some more info may help. It seems that if I have a server that > > I run at client with their IP address scheme and then run same structure on > > server in my office it shows as broadcasting on more than one IP address. > > So the question now is where does 4D get IP address to show on the server > > admin window? I think this might be part of the problem. I am going to post > > this on the new forum as well with some screen shots > > > > Regards > > > > Chuck > > > > ------------------------------------------------------------------------------------------------ > > Chuck Miller Voice: (617) 739-0306 > > Informed Solutions, Inc. Fax: (617) 232-1064 > > mailto:cjmiller<AT SIGN>informed-solutions.com > > Brookline, MA 02446 USA Registered 4D Developer > > Providers of 4D and Sybase connectivity > > http://www.informed-solutions.com > > > > ------------------------------------------------------------------------------------------------ > > This message and any attached documents contain information which may be > > confidential, subject to privilege or exempt from disclosure under > > applicable law. These materials are intended only for the use of the > > intended recipient. If you are not the intended recipient of this > > transmission, you are hereby notified that any distribution, disclosure, > > printing, copying, storage, modification or the taking of any action in > > reliance upon this transmission is strictly prohibited. Delivery of this > > message to any person other than the intended recipient shall not > > compromise or waive such confidentiality, privilege or exemption from > > disclosure as to this communication. > > > > > On Jun 4, 2020, at 7:20 AM, Chuck Miller via 4D_Tech < > > [email protected]> wrote: > > > > > > Thanks for input. I will address each below your response > > > > > > Sent from my iPhone > > > > > >> On Jun 4, 2020, at 1:44 AM, Chip Scheide <[email protected] > > <mailto:[email protected]>> wrote: > > >> > > >> Chuck, > > >> There are 2 ways to resolve this, and using both is probably best. > > >> (following assumes DHCP) > > >> > > >> 1 - put a battery on the computer (server) so that when power goes down > > during tests the computer does not turn off. > > >> 1a - if this is already the case (it should be if it is a server) and > > IP addresses are being changed on the server then there is a switch in the > > network who's battery has failed - and Enterprise IT should track it and > > fix it ( might need to enter a ticket) > > >> > > > There is a UPS. Indeed the machine and server never went down > > > > > > > > >> 2 - talk with the IT/network people, give them the server's MAC ID > > (network card ID) and request a fixed IP address server through DHCP > > >> Notes on #2 : the network admin can assign a specified IP address to a > > specific MAC address, which is assigned via DHCP, then regardless of power > > outage, server reboot, etc and generally the time off the network, the IP > > address of the computer does not change. > > > This is the setup. Indeed the IP is manual. > > >> > > >> and BTW > > >> - MAC is a network card term and refers to the network card's ID > > >> - Mac(intosh) is an Apple Computer Co. computer. > > >> > > >> DHCP with manual address usually means that the IP address has been > > assigned by specific computer Admin, rather than network admin. The IP > > address assigned this way can (and appears to) conflict with the DHCP > > server assigning addresses. > > >> This is because, as I understand it, the DHCP server does not 'know' > > about the manual address. > > > The address is permanent and was assigne by network folks > > > > > > > > > > > > > > >> > > >> Quickly: > > >> DHCP hands out IP addresses in a specified range xxx.xxx.xxx.1 - 255. > > the range can be restricted, say xxx.xxx.xxx.100 - 200. > > >> and/or the DHCP server can hand out specific IP addresses to specified > > MAC address, and random to all others. > > >> Where I was working, IT did all of this. > > >> Servers, and other devices which required that IP address NOT change > > over time, (requested to be fixed), were assigned in the range 1- 30, 31 - > > 220 were for network attached devices (computers, tablets etc), and 220 - > > 254 were for reserved for printers. > > >> However, ALL addresses were assigned via DHCP - assigning a manual > > address was not allowed because: > > >> the DHC server did not know about it, and could/would hand out the > > manual IP address to another device - creating a conflict. > > >> > > >> > > > Just a note. DHCP with manual address must used a fixed up S far as I > > know or you will get conflicts with other machines > > >> Hope this helps > > >> > > >> Chip > > >> > > >> > > >>> Hi All, > > >>> > > >>> We have a built Client server v 16.x running on a MAC > > >>> > > >>> Network set up is > > >>> DHCP with manual address > > >>> > > >>> This has been working till about 6n months ago. > > >>> > > >>> The hospital seems to test power outages on fairly regular basis. > > >>> When they do change over to emergency power > > >>> > > >>> The network pane in system preferences loses all except the IP > > >>> address and her we go > > >>> > > >>> The 4D server running starts listening on a different IP address. Has > > >>> anyone ever seen this before. Tech support is telling me to switch to > > >>> manual address. > > >>> > > >>> I have run and used this setup at many other customers > > >>> > > >>> Thanks and regards > > >>> > > >>> Chuck > > >>> > > ------------------------------------------------------------------------------------------------ > > >>> Chuck Miller Voice: (617) 739-0306 > > >>> Informed Solutions, Inc. Fax: (617) 232-1064 > > >>> mailto:cjmiller<AT SIGN>informed-solutions.com > > >>> Brookline, MA 02446 USA Registered 4D Developer > > >>> Providers of 4D and Sybase connectivity > > >>> http://www.informed-solutions.com > > >>> > > ------------------------------------------------------------------------------------------------ > > >>> This message and any attached documents contain information which may > > >>> be confidential, subject to privilege or exempt from disclosure under > > >>> applicable law. These materials are intended only for the use of the > > >>> intended recipient. If you are not the intended recipient of this > > >>> transmission, you are hereby notified that any distribution, > > >>> disclosure, printing, copying, storage, modification or the taking of > > >>> any action in reliance upon this transmission is strictly > > >>> prohibited. 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