Intermittent High Latency [ Edited ]

[sorter]

So for the past 2 months or so I have been getting Intermittent High Latency, which also interrupted my OnDemand. A couple weeks back we had a technician come out and he replaced my gateway and one of my DVRs. However the problem persisted. So I began to investigate online and found the UV Realtime tool.

Here are the screenshots from the tool while there is normal latency:

 

Here are the screenshots from the tool while there is high latency:

 

Here is a screenshot of the Interfaces when I had normal latency while downloading at my maximum bandwidth:

Here is a screenshot that I took from a Network Latency monitoring tool that I ran for about 13 hours at a 60 second interval:

The only thing I can tell is that under high latency the Interface tab shows a considerable change. I called AT&T a second time and the technician rechecked all my terminations and connections. Then he ran their network tool. Then he went and connected me to a better port at the first hop router.

Unfortunately this still hasn't fixed my problem as it continues to persist. So before I call AT&T a thrid time I was wondering if anyone can tell me what it could be. I have check all my PC's on my network for viruses etc. I am not using any Peer to Peer software, etc. As I said this also interferes with my TV.

I had been using AT&T uverse for many months with no issues. Also there has been no changes made to my network since before or after the issue began.

Thanks for any help.

Sorter.

[removed images containing IP and MAC addresses]

[SomeJoe7777 ACE - Geek]

OK. The 2Wire routers have a known issue with latency if the outbound bandwidth is saturated. Your screenshots show that your outbound bandwidth is saturated (outbound data transfer rate ~ 1 Mbps) at the times you're having high latency.

You need to look at the computers on your network and determine what computer and what application is transferring data outbound during these periods. Look for Bittorrent, Mozy/Carbonite online backups, etc.

If you find this computer/application, see if you can configure the program to transfer this data at a limited rate. In Bittorrent, you can specifiy to allow only a certain amount of bandwidth. It is recommended that you configure it to use no more than 2/3rds of your outbound bandwidth. Since you have 1 Mbps outbound, configure Bittorrent (or what ever application you have) for a maximum of about 650 kbps.

[sorter]

I shut down everything. No Torrenting, no streaming, no backup software. The issue persists. I have full control of my network. And have been monitoring it extensively.

[SomeJoe7777 ACE - Geek]

Well, the upload bandwidth is coming from somewhere. The meter doesn't lie.