cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
2169
Views
0
Helpful
1
Replies

Cisco DPC3939B Firmware Issue

netalert
Level 1
Level 1

We recently received an upgrade to our Cisco DPC3939B Modem that we have through Comcast. After the upgrade we are experiencing flapping and latency with our circuit (see image).

 

DOCSIS Software Version: dpc3939b-v303r20421911-181127a-CMCST

Software Image Name: dpc3939b-v303r20421911-181127a-CMCST.p7b
 
We have contacted Comcast although their engineer stated that they are not in control of the software updates and we need to reach out to Cisco to report the issue.
 
Does anyone know which division at Cisco would be able to handle this issue? TAC informed me on the phone to contact Comcast. (Seems like a typical finger pointing game to me)
 
1 Reply 1

netalert
Level 1
Level 1

It seems on 1/31/19 that our gateway was rebooted (not by Comcast) and our software was updated to the following which corrected the issue.

 

DOCSIS Software Version: dpc3939b-v303r20421762-180419a-CMCST

Software Image Name: dpc3939b-v303r20421762-180419a-CMCST.p7b
 
We are no longer receiving latency or flapping on the circuit.
 
If someone at Cisco pushed this, thank you for fixing the issue.