Forum Discussion

mkautzm's avatar
mkautzm
New Contributor II
6 years ago

Service Oversold in Irvine, CA. CMTS response time fluctuates wildly

It appears that Cox does not have the infrastructure to support usage at peak hours near my location.  This results in highly degraded service in the afternoon until later at night.  Some investigati...
KevinM2's avatar
KevinM2
Former Moderator
6 years ago
Hello, the second hop (10.75.135.1) is more than likely your modem, as it is a private IP Address. Additionally, the first hop appears to be a wireless router because the numbers begin with 192. Your modem shows it's been online for 67 days. When power-cycling the equipment, I recommend unplugging the modem itself for at least 60 seconds. Can you please perform another traceroute on a hard-wired connection?

Also, issues are you experiencing with our internet service specifically? -Kevin M. Cox Support Forum Moderator
mkautzm's avatar
mkautzm
New Contributor II
6 years ago

It is not uncommon for a CMTS to show up as a local address.  If you'd like another view of this, these results are FROM a service provider, TO my house:

02/12/2019 04:13:22 UTC
--------------------

MTR:
Start: Mon Dec 2 04:13:26 2019 Blizzard 1.|-- Blizzard 0.0% 10 0.3 0.3 0.2 0.5 0.0
2.|-- 24.105.18.3 0.0% 10 0.7 5.4 0.5 47.9 14.9
3.|-- 137.221.105.16 0.0% 10 0.7 1.0 0.6 1.2 0.0
4.|-- 137.221.66.18 0.0% 10 1.3 9.0 1.0 60.6 18.8
5.|-- 137.221.83.66 0.0% 10 5.7 5.9 5.7 6.2 0.0
6.|-- 137.221.65.68 0.0% 10 5.8 14.2 5.7 53.1 17.7
7.|-- 137.221.68.32 0.0% 10 5.8 9.5 5.8 35.3 9.1
8.|-- langbbrj02-ae1.301.r2.la.cox.net 0.0% 10 5.4 7.9 5.4 29.7 7.6
9.|-- 68.1.1.170 0.0% 10 7.5 10.1 7.5 31.1 7.3
10.|-- ??? 100.0 10 0.0 0.0 0.0 0.0 0.0
11.|-- ip70-181-109-239.oc.oc.cox.net 0.0% 10 122.2 78.3 16.7 297.4 85.6

Looking at the last result, you can clearly see there is a great deal of variance, indicating an overloaded (or misconfigured) node in the route.  I had a post with a lot of other examples showing similar results.

  • KevinM2's avatar
    KevinM2
    Former Moderator
    6 years ago
    @mkautzm, I am having difficulty viewing this MTR. Can you please manually power-cycle your modem, and then perform another traceroute? Please bypass your wireless router and provide the traceroute on a hard-wired connection to the modem. -Kevin M. Cox Support Forum Moderator
    • mkautzm's avatar
      mkautzm
      New Contributor II
      6 years ago

      Modem has been restarted.  I'm trying to get another traceroute that shows the issue.  It's intermittent and inconsistent and I'm not always home at peak hours.  I'll update this again when I have some relevant results to share.