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Packet Loss/Lost MDD Timeout, RCS Partial Service

New Poster

Packet Loss/Lost MDD Timeout, RCS Partial Service

Good evening,

 

I've been have a lot of trouble lately when it comes to packet loss, and huge spikes in my internet. When I run the xfinity speed test, I sometimes don't even break 20mbps when I should be getting 150. I've talked to the company that provides my modem, and they state everything is fine on their end, I've also had a technician come out to my house, they also stated that everything is fine.  I'm currently at a loss, and it seems like no one can fix my connection, and the constant spikes in speed and consistent packet loss is starting to wear on me. My current error logs show a Lost MDD Timeout, and RCS Partial Service message occurring EVERY minute. Does anyone have a solution to this?

 

Thank you.

Expert

Re: Packet Loss/Lost MDD Timeout, RCS Partial Service

Start here;


https://forums.xfinity.com/t5/Your-Home-Network/Connection-Troubleshooting-Tips/m-p/1253575#M94474

 

Post the requested info from here;


https://forums.xfinity.com/t5/Your-Home-Network/Information-Requested-for-Connection-Related-Posts/m...



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New Poster

Re: Packet Loss/Lost MDD Timeout, RCS Partial Service

Upstream/Downstream - https://imgur.com/a/mbjHRi1

 

Event log - https://imgur.com/a/4tdGNMj

 

Make/Model- ARRIS Surfboard SBG7400AC2 

 

I've had a techvisit to which they stated everything was fine, and I've contacted customer support as well.

 

Thank you

Expert

Re: Packet Loss/Lost MDD Timeout, RCS Partial Service

There are some connection quality / impairment problems. The SNR is too low /out of spec on channels #9 and #13. And channels 10,11, and 12 are not locking. The error log entries confirm it.

The upstream power is on the high end as well.



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Expert

Re: Packet Loss/Lost MDD Timeout, RCS Partial Service

See if any of this applies;


In a self troubleshooting effort to try to obtain better connectivity / more wiggle room, check to see if there are there any excess/unneeded coax cable splitters in the line leading to the modem that can be eliminated/re-configured. Any splitters that remain should be high quality and cable rated for 5-1002 MHz, bi-directional, and no gold colored garbage types like GE, RadioShack, RCA, Philips, Leviton, Magnavox, and Rocketfish from big box stores like Home Depot, Lowes, Target, Wal-Mart etc. Splitters should be swapped with known to be good / new ones to test

If there aren't any unneeded splitters that can be eliminated and if your coax wiring setup can't be reconfigured so that there is a single two way splitter connected directly off of the drop from the street/pole with one port feeding the modem and the other port feeding the rest of the house/equipment with additional splits as needed, and you've checked all the wiring and fittings for integrity and tightness and refresh them by taking them apart then check for and clean off any corrosion / oxidation on the center wire and put them back together again, then perhaps it's best to book a tech visit to investigate and correct.



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New Poster

Re: Packet Loss/Lost MDD Timeout, RCS Partial Service

Thank you, I have a technician coming out tomorrow, do you think he'd understand this post if I showed it to him?

Expert

Re: Packet Loss/Lost MDD Timeout, RCS Partial Service

You should try. Show him this thread, especially the post with the links to the signals. Good luck ! Please post back with how things turn out.



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New Poster

Re: Packet Loss/Lost MDD Timeout, RCS Partial Service

Thank you for your help yesterday. The technician found two massively erdoded connection both in my home, as well as outside. He replaced both connectors, and everything appears to be faster and stable now! 

Expert

Re: Packet Loss/Lost MDD Timeout, RCS Partial Service

Good to hear ! For curiosity, would you please post what the stats look like now.



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