Cmd_maxbackup

8BitCowboy

I have been playing for about a year, and i jsut recently moved. After the move, I have started getting this error. I can play just fine usually, but randomly get kicked saying Reason: CMD_MAXBACKUP hit. I don't know what this error means or how to fix it.

BlueNovember

CMD_MAXBACKUP hit:
When an update is sent to the server, it includes some extra movements that you've made so the server can keep predicting what you are doing even if there is packetloss.

The error is generated because the server did not get an update in time and exhausted all the regular commands and all the backup commands (or most of the packets it's getting are bad).

Here is a detailed description of this:
If you are moving faster than 30 frames per second (cl_cmdrate), then multiple commands will be put into some packets. <i>(You can change the rate of sending command packets to the server by setting the cl_cmdrate CVAR.)</i>
With each command, steam re-sends the last few previous movement commands (in case there is packet loss) so that it can keep moving smoothly in the face of minor network problems.
The default number of "backup" commands that we send is 2, but you can change this number by setting cl_cmdbackup to another number.
You can send more than 8 backup commands, but you should note that sending backup commands will increase your outgoing bandwidth usage (and thereby add to loss).

Basically this error is caused by poor communication from you to the server. You get kicked because the server is unable to predict where you are and what you are doing.

Recommendations:
Set the following:<ul><li>
</li><li>cl_updaterate 30
</li><li>cl_cmdrate 30
</li><li>cl_cmdbackup 2
</li><li> rate 7500</li></ul>and these:<ul><li>Kill any P2P programs you have running</li><li>scan your computers for spyware and virus</li><li>disable QoS (uninstall it entirely from your connections)</li><li>do not use proxy ISP services</li></ul>

8BitCowboy

OK, I have tried the following:
cl_cmdrate 30
cl_updaterate 30
cl_cmdbackup 1,2,3,4,5,6,7,8
rate 7500
update my firmware

I still get the same error. It happens pretty randomly and even when I am in spectate mode.

BlueNovember

Done these?<ul><li>Kill any P2P programs you have running</li><li>scan your computers for spyware and virus</li><li>disable QoS (uninstall it entirely from your connections)</li><li>do not use proxy ISP services</li></ul>

8BitCowboy

comp is clean, and I don't use P2P stuff, I am not on a proxy, didn't change anything there cause they didn't apply to me. What is QoS?

BlueNovember

<!--QuoteBegin-8BitCowboy+Jul 12 2005, 04:32 PM--></div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td><b>QUOTE</b> (8BitCowboy @ Jul 12 2005, 04:32 PM)</td></tr><tr><td id='QUOTE'><!--QuoteEBegin--> comp is clean, and I don't use P2P stuff, I am not on a proxy, didn't change anything there cause they didn't apply to me. What is QoS? <!--QuoteEnd--> </td></tr></table><div class='postcolor'> <!--QuoteEEnd-->
There's a vague chance it's responsible. It's a network service MS thinks is in some way useful. It breaks far more than it fixes.

QoS = "Quality of Service" manager.

Images are 1000 words.

<img src='http://img.photobucket.com/albums/v457/BlueNovember/Networkconnetions.png' border='0' alt='user posted image' />
(Image will differ slightly. Your theme will be less chunky and you won't have a bridge)

<img src='http://img.photobucket.com/albums/v457/BlueNovember/Remove_QoS.png' border='0' alt='user posted image' />

8BitCowboy

I think that fixed it. Thanks for your help, you have been very knowlegable and informative.