Comments on: How to set a Static IP Address on a Mac

By: Justin

Justin — Sat, 23 Mar 2013 17:22:48 +0000

It didn’t work at first, and I have a linksys router so I went to Network->Advanced->DNS->and added in the left box 192.168.1.1 and it worked.

By: Joe

Joe — Mon, 24 Sep 2012 19:49:04 +0000

you are my savior, ive been swatted every day, and now they dont know my ip

By: Todd

Todd — Thu, 23 Dec 2010 21:42:28 +0000

I bought my MB pro about 2 weeks ago (first MAC) and once I realized I had a problem I began searching for a solution. Amazing how there are literally 100′s if not more posts on numerous websites-including the APPLE SUPPORT forums-yet NOTHING from the braintrust in Cupertino. …..;(

I tried many things-last of which was turning off IPv6-with no success. Earlier today I finally assigned a static IP to my MB pro on my D-Link router via web browser and viola!!! Problem appears to be solved. I’ve been online for several hours without any interruption.

It is an easy solution for an experienced user-but I’m certain this is no comfort to those that bought the Mac because “It’s so simple-ANYONE can use it,regardless of computer experience”……..

Thanks.

By: Dimitri

Dimitri — Fri, 17 Dec 2010 21:05:08 +0000

FWIW, if you have a router most will let you permanently assign an IP to a DHCP client based on the MAC address of the hosts ethernet NIC. And yes. x.x.x.255 for a 0xffffff00 netmask is the broadcast. Your text is right, just the screengrab shows the wrong addr.

By: David

David — Fri, 17 Dec 2010 17:29:13 +0000

Good catch Sebastian & Max, thanks for pointing that out

By: Max

Max — Fri, 17 Dec 2010 12:21:52 +0000

In a /24 network, the .255 address is the broadcast address. It cannot be used by an equipment. Same with .0 which is the network address.

Valid addresses are from 1 to 254

If you have a subnet which is larger than /24 (eg. /23 or /22), then .255 can be used in some cases.

By: Sebastian Kusnier

Sebastian Kusnier — Fri, 17 Dec 2010 10:39:53 +0000

The IP address you have used in the screenshot are not valid in this network configuration. 192.168.0.255 is for broadcasting.

Address: 192.168.0.1 11000000.10101000.00000000 .00000001
Netmask: 255.255.255.0 = 24 11111111.11111111.11111111 .00000000
Wildcard: 0.0.0.255 00000000.00000000.00000000 .11111111
=>
Network: 192.168.0.0/24 11000000.10101000.00000000 .00000000 (Class C)
Broadcast: 192.168.0.255 11000000.10101000.00000000 .11111111
HostMin: 192.168.0.1 11000000.10101000.00000000 .00000001
HostMax: 192.168.0.254 11000000.10101000.00000000 .11111110
Hosts/Net: 254 (Private Internet)

See: http://jodies.de/ipcalc?host=192.168.0.1&mask1=24&mask2=