Chuck,
by default
4D uses 1 IP address but at least 3 ports
- 4D (client/server default) 19813
- SQL 19812
- web service 80, and 443 for HTTPS
- PHP 127.0.0.1: 8002
it may be that you have (or there are) multiple 4D servers running (on the same
machine)
which would require changing the default ports for at least one of them, and
the clients would need to specify the port to connect.
4D server A is on default ports
4D server B could be on any other port number and +1 for SQL
as for IP addresses
each NIC (Network Interface Card) can have an IP address.
most modern computers have multiple ways of connecting to a network.
Ethernet and WiFi are 2 most popular.
on a Mac thoughtcrimes you can also have Thunderbolt, Firewire, Bluetooth,
possibly NFS (Near field), and other options are possible as external add ons.
Each of these network connection options (if they are available and ON) can get
an IP address.
Since you said this is a Mac, and the server is in an enterprise environment
the likely cause of IP address confusion is:
<drum roll please> :)
WiFI AND Ethernet both being on and connected.
If there is an ethernet connection (most likely) and wifi is on then the
computer will have 2 IP addresses.
It is possible that power testing causes one or the other network connection to
drop.
- Ethernet
- the switch/router for the floor/subnet/room/building (as appropriate)
goes down with the power (i.e. the battery back up for it has failed (or was
never setup). This is an Enterprise IT issue
- WIfi
- the wifi router, or one or more extenders goes down with the power
outage, again, this is an Enterprise IT issue.
The simple solution (if this is the problem)
-- if the server is supposed to connect via Ethernet -- turn OFF WiFi. System
Preference : Network : select WiFi from the list, click the button labels 'Turn
WiFi Off'.
-- if the server is supposed to connect via Wifi (?!?!?!), disconnect the
ethernet cable.
Chip
> 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
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>> On Jun 4, 2020, at 7:20 AM, Chuck Miller via 4D_Tech
>> <4d_tech@lists.4d.com> 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 <4d_o...@pghrepository.org
>>> <mailto:4d_o...@pghrepository.org>> 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
>>>> ------------------------------------------------------------------------------------------------
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>>>> prohibited. Delivery of this message to any person other than the
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>>>> communication.
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