JAEN

Windows

ipconfig

SafeShow/refresh IP configuration

ipconfig /all

Shows IP, subnet, gateway, DNS and DHCP state. /flushdns clears the DNS cache; /renew re-acquires a DHCP lease.

Examples

  • ipconfig /allFull detail incl. MAC/DNS/DHCP
  • ipconfig /flushdnsClear the DNS resolver cache

Syntax

ipconfig [/all] [/release] [/renew] [/flushdns]

Before you run it

Read/refresh only.

Used when you see

No network connectivity
2
Confirm IP/DNS are assigned169.254.x means DHCP failed
See the whole flow →
Name resolution problems
2
Flush the DNS cacheRun /flushdns
See the whole flow →
Clients can't get an IP
3
Release/renew on the clientrelease/renew; a 169.254 address proves the server never answered.
See the whole flow →

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