Can you tell us more about your setup.
1. Your model of Mac?
2. What version of OSX you're using?
3. What type of WiFi router you're using?
4. What network encryption you are using on the WiFi network WEP, WPA etc?
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Question
Why my internet works randomly fast?
Hi,
I hope you will help me. My internet works in very weird way. Sometimes I can download with 1Mb/s sometimes I need to wait 1 minute to open web page. Because I use wireless I also check how internet works on another computer and it is fine. If you want to know more details, please ask. I need to sort it out somehow.
My computer is iMac.
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Answers
hi,
Hardware Overview:
Model Name: iMac
Model Identifier: iMac5,1
Processor Name: Intel Core 2 Duo
Processor Speed: 2.16 GHz
Number Of Processors: 1
Total Number Of Cores: 2
L2 Cache: 4 MB
Memory: 1 GB
Bus Speed: 667 MHz
Boot ROM Version: IM51.0090.B09
SMC Version: 1.9f4
Serial Number: W86457DYVUV
Mac OS X v. 10.5.6
Router: Belkin
Version Info
Firmware Version
F6D4230-4_WW_1.00.03
Boot Version
1.01
Hardware
F6D4230-4 v1000
Serial No.
20908423009798
LAN Settings
LAN/WLAN MAC
00:22:75:46:22:6c
IP address
192.168.2.1
Subnet mask
255.255.255.0
DHCP Server
Enabled
Internet Settings
WAN MAC address
00:22:75:46:22:6d
Connection Type
Dynamic
Subnet mask
255.255.252.0
Wan IP
82.21.103.219
Default gateway
82.21.100.1
DNS Address
194.168.4.100
194.168.8.100
Features
Firewall Settings
Enabled
SSID
Belkin_46226c
Security
Enabled
WPS
Enabled
Remote Management
Disabled
UPNP
Enabled
Security Mode WPA/WPA2 -Personal(PSK)
Authentication WPA-PSK +WPA2-PSK
Encryption Technique TKIP+AES
PS. And as a said b4, i am constantly connected to internet, problem is with opening web sites. Any other computers at home work fine.
Thanks for the Information on your setup.
If other home computers work fine, are they connecting over WiFi or ethernet cable?
Have you tested the iMac when connected over Ethernet so that you can focus the problem down to the WiFi connection?
If the problem disappears when connected via ethernet you can be sure it is the WiFi.
Apple Airport WiFi is unfortunately a little prone to communication issues with certain makes and models of WiFi router. The problem is more pronounced with Laptops but it is always worth trying a few things to see can you improve performance.
If your ethernet works fine and you're sure it is the WiFi connection. Temporarily disable WPA security and see if issues improve (it often does).
I am not a MAC person, but with a Windows machine, one step we can take is to uninstall the wireless NIC, restart and re-install the wireless NIC with either a newer driver or the same driver. Also look at seeing if new firmware is available for the router.
In your router, check if MTU is default at 1500. Adjusting this to 1492 sometimes helps.
... Thinkpads_User
If someone can tell me how to uninstall the wireless NIC on Mac i'll be happy. Don't know how to do it :( Firmware on router is updated. I do not know should I change a router settings if every other comp in house works ok?!
Maybe there is some program which i can instal on my mac, and can scan my network settings?
It is not very easy to UNINSTALL drivers on OSX and to be honest I would NOT recommend it.
OSX is NOT like Windows with milions of 3rd party devices and components and often issues with driver versions etc. On Apple PCs all the hardware is provided by Apple so it is rare for there to be any driver issues.
There is a free utility called iStumbler http://www.istumbler.net which will scan all your wireless networks and you can see the strength and channel of the signal.
It may be possible that there are other wireless networks in the area interfering or other electronic devices. It is worth trying a few different channels for the WiFi to find one with less interference.
I am going to go in another direction fromthe other experts and ask you to consider DNS as your issue. You mention that it can be slow at times to load the web pages after typing in something such as www.hotmail.com.
It looks like you are using your ISP's dns servers for name resolution. In many cases, these servers are slower than running molasses.
Try setting router's dhcp to apply the dns servers as 4.2.2.1 and 4.2.2.2. These are free public DNS server that are FAST with name resolutions.
Let see how this works for you.....
If DNS is truly the issue, you can use alternate DNS services such as OpenDNS (http://www.opendns.com/) which is free, and gives you a bit more control over your DNS settings/usage. Especially since internet providers do not always flush their cache and can be slow to resolve a name.
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by: thinkpads_userPosted on 2009-03-28 at 14:53:16ID: 24010401
One possibility is that power management is shutting down the wireless adapter. Power management should be set to maximum performance. One way to test whether the wireless card is a problem is to temporary disable or turn off the wireless and connect with a wired connection and see how that works. ... Thinkpads_User