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Top Reasons Cable Modems are not Getting Expected Speed and CMTS Monitoring

Post 11 of 178
Get Your Tech On | The Industry's #1 DOCSIS Podcast

Cable Modems not Getting Speed - Top Reasons Cable Modems are not Getting Expected Speed and CMTS Monitoring

Episode 22

Hosted by Brady Volpe of the Volpe Firm and Guest John Downey, CMTS Technical Leader at Cisco Systems.  Today’s show we will cover cable modems not getting speed and monitoring your CMTS for proper Cable Modem State and Service Flow Operation.  At the bottom John has supplied us with his presentation if you would like to listen along with viewing the slides.  There were some technically issues on John's end so apologies for the flickering.

Top Reasons Cable Modems are not Getting Expected Speed and CMTS Monitoring

Layer 1

  • Dropped packets (physical layer issues)
  • Not doing full bonding
  • Registered in DOCSIS 2.0 mode
  • Partial mode
  • Service flow not using proper BG
  • Testing through wireless, VPN, wireline limitations

Layer 2

  • Ethernet frame size
  • DOCSIS Overhead
  • Powerboost

Layer 3

  • V4 vs V6
  • Traffic generator
  • Layer 3 vs Layer 2 reporting
  • Single Cable Modem speed vs multiple modems/flows
  • Trying to get linerate

Layer 4

  • TCP vs UDP
  • UpStream speed limitation

If you are watching this on youtube please hit the subscribe button and let us know what you think. We always appreciate your feedback. You can find the slides at the bottom of the page or slideshare.

For our many podcast listeners - and I know that is a majority of you - we displayed a lot of cool visuals on our show today - so you may want to consider reviewing today’s show on our website at volpefirm.com or on our youtube channel.

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Mia Colabrese

Mia Colabrese has 20 years of Cable TV Broadband experience. Focused in telecommunications product development and marketing. She is a graduate from Penn State University.

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