Computer after the replacement of the network environment, not the right to obtain an IP address, has been in the school, a home once in a while, found that after the WiFi connection home, unable to access the Internet, after trying, found in the CMD ipconfig/release; Ipconfig/renew, can connect the Internet properly, and found that after each change or shutdown the network environment need to use ipconfig/release in the CMD again; Ipconfig/renew to reconnect to the Internet, then try to connect cable, found the Ethernet has been unable to get the right IP even in the same way in CMD, WLAN can even on the Internet, Ethernet can't,
DHCP automatically, ipv4 and ipv6 are automatically get
Ipconfig/release

Ipconfig/renew
Above test for connection IPhone hotspot, respectively for the WiFi connection with USB connection, WiFi can connect Internet, USB can't (3.0 support shutdown charging interface; Previously available USB connect Internet)
Computer for ThinkPad P50

CodePudding user response:

Again after tests found that does not change the IP address automatically, when I change for the school Intranet WiFi with ipconfig view are still 172.20.10.4 ipv4, after the release/renew IP into normal, so as to get the right IP, but can't get automatically

CodePudding user response:

Your laptop can't obtain IP address automatically

CodePudding user response:

refer to the second floor garry7 response:

your laptop can't obtain IP address automatically

I can be automatically obtained before ah,,, what is the hardware Settings or what's the problem that the computer can't automatically obtain an IP address???????

CodePudding user response:

May be your DHCP service program is closed, you go to management there

CodePudding user response:

reference 4 floor lingren2784 response:

may be your DHCP service program is closed, you go to there to see management

Confirm the open,,, DHCP

CodePudding user response:

Renew actually trigger a process of DHCP,

Why can't trigger a process called DHCP automatically, suggest you use wireshark caught look, use the bootp filter,

Look at four of the DHCP message whether complete, also can learn the DHCP protocol, by the way, very simple,,

CodePudding user response:

Try with administrator privileges

CodePudding user response:

Network card drivers unload reshipment,

CodePudding user response:

Download a drive life, update the driver

CodePudding user response:

To blow up the DHCP software and discovery is not sent, reset the DHCP bai

CodePudding user response:

Speculation is a problem of DHCP, online to find relevant information to set the DHCP

CodePudding user response:

DHCP is closed
Lead to can't distribute IP
Check the DHCP server

CodePudding user response:

This kind of question do system again

CodePudding user response:

Zhang eat suggest what big things

CodePudding user response:

Configure routers 1 2 checked

CodePudding user response:

Under the condition of an IP address conflict, automatically assign a 169.254.0.0 segment address

CodePudding user response:

Simple and crude, try reinstall nic driver, this should not be a hardware problem,
Install wiresharik caught look, is it your computer didn't discover request, or what problem, release/renew is triggered release and retrieve instructions, whether the computer can not trigger the DHCP request,

CodePudding user response:

Back in the 2018-06-12 11:47:27 # 16 points: 0
Under the condition of an IP address conflict, automatically assign a 169.254.0.0 segment address

CodePudding user response:

Can make 360 automatically obtain IP,

CodePudding user response:

Do not manually enter ipconfig/dhcprenew directly through wireshark caught check card sends a DHCP request message, a closer look at CARDS and DHCP server interaction message, filter fields for the bootp