Another wird problem. When i connect my cisco 877W to the internet (12 Mb down, 1 Mb up) i get different download results.
When i do a test (speedtest on the internet) connected to the cisco 877 LAN i get these results: max 650 kbps down and 101 kbps up.
When i am connected to the Wlan of the cisco 877 i get these results: max 375 bps down and 101 bps down.
And when i connect my Zyxel adsl2+ router i get : 1100 bps down and 101 bps up.
What's wrong with the Cisco ? Througput problem ?
Any suggestions ?
The router should able to support up to 30Mbps at 1400 byte.
What is your current IOS ver. ? Can you upgrade to 12.4(4)T ? It supports ADSL2/2+.
Check below for info.
I have adsl2+ and the current ios is 12.4.9T.
I also installed the 12.4.9.T1, but this ios image has given me problems with the WLAN.
Any suggestions ?
Can you try to download an older ver. (i.e. 12.4(6)T3 * 12.4(4)T4) to test again. If the problem still exists, I recommend to open a TAC case w/ Cisco for further investigation.
However, can you provide the config. for reference ?
Did you turn on any security, VPN service ?
Will you please try to set the MTU size on the ethernet interface. Use the below command:
tcp-adjust mss 1350
Also, if you are using PPOE you have to set the MTU to 1492.
I guess the above should work and it is not an IOS problem. I had similar problem and it was due to MTU problem.
Please let me know how it goes,
Mohamand, thanks for the info. you wake me up for this reason. Let'w wait for the testing result. :)
John, more info. for you.
Hope this helps.
Okay, i will try this later on.
So i will set tcp-adjust mss 1350 on the ethernet interface.
I don't use pppoe so i will leave this to the default.
But what shall i put in the wlan ? Also tcp-adjust mss 1350 ?
According to the uage guidelines form second link. I could recommend below setting.
ip tcp adjust-mss 1452
ip mtu 1492
Please advise the result after the test.