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TCP/IP setting changes
Steve,
Thanks for the reply. Well, all of the machines have static addresses in 192.168.1.x. Presumably one does not need a DHCP server with static addresses - two different things. So, if just *one* of the machines switches all by itself to APIPA with a 169 address, it isn't on the same "network" and doesn't see the other 192.168.1.x machines and vice versa. It now appears that the only machines that switched like this were XP machines. Fred "Steve Winograd [MVP]" wrote in message ... In article , "Fred Marshall" wrote: I've seen two computers on the same network - one with 98SE and one with XP - that switched from static IP addressing to automatic. This is on a peer-to-peer network with no DHCP server. So, the IP addresses become the 169... automatically assigned default numbers. What might cause this to happen? It's most unexpected and, of course, stops network access entirely to the computer on which it occurs. Thanks, Fred That's how it's supposed to work on a network with no DHCP server. The computers assign themselves compatible APIPA (Automatic Private IP Address) addresses in the 169.254.x.x. range that's reserved for exactly that use. Why do you say that it stops network access? The computers should be able to see each other, share files and printers, etc, using APIPA. -- Best Wishes, Steve Winograd, MS-MVP (Windows Networking) Please post any reply as a follow-up message in the news group for everyone to see. I'm sorry, but I don't answer questions addressed directly to me in E-mail or news groups. Microsoft Most Valuable Professional - Windows Networking http://mvp.support.microsoft.com Steve Winograd's Networking FAQ http://www.bcmaven.com/networking/faq.htm |
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TCP/IP setting changes
In article , "Fred Marshall"
wrote: I've seen two computers on the same network - one with 98SE and one with XP - that switched from static IP addressing to automatic. This is on a peer-to-peer network with no DHCP server. So, the IP addresses become the 169... automatically assigned default numbers. What might cause this to happen? It's most unexpected and, of course, stops network access entirely to the computer on which it occurs. Thanks, Fred That's how it's supposed to work on a network with no DHCP server. The computers assign themselves compatible APIPA (Automatic Private IP Address) addresses in the 169.254.x.x. range that's reserved for exactly that use. Why do you say that it stops network access? The computers should be able to see each other, share files and printers, etc, using APIPA. Steve, Thanks for the reply. Well, all of the machines have static addresses in 192.168.1.x. Presumably one does not need a DHCP server with static addresses - two different things. So, if just *one* of the machines switches all by itself to APIPA with a 169 address, it isn't on the same "network" and doesn't see the other 192.168.1.x machines and vice versa. It now appears that the only machines that switched like this were XP machines. Fred Fred, I'm sorry, but I must have missed where you said that the computers switched themselves from static addresses to APIPA. That shouldn't happen, and I don't know what could cause it. -- Best Wishes, Steve Winograd, MS-MVP (Windows Networking) Please post any reply as a follow-up message in the news group for everyone to see. I'm sorry, but I don't answer questions addressed directly to me in E-mail or news groups. Microsoft Most Valuable Professional - Windows Networking http://mvp.support.microsoft.com Steve Winograd's Networking FAQ http://www.bcmaven.com/networking/faq.htm |
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