llinfeng's profile

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8 Messages

Wed, Feb 10, 2021 2:00 PM

xFi no internet access: Harvester code and inconsistent access to 10.0.0.1 under bridge mode

Does anyone know what exactly those "[Harvester][3xxx]" code mean? The follwing are logged as "troubleshooting logs" on the Xfinity modem in my apartment, and the timetag matches exactly when I lose internet access. I use the xFi modem in bridge mode and I download the logs through a local ip: 10.0.0.1. I searched around and did not find a definite answer, nor a proper documetnation.

 

[Harvester][3794]: Harvester StartRadioTrafficHarvesting Starting Thread to start RadioTraffic Data Harvesting
2021/2/10 15:48:49 Notice

[Harvester][3794]: Harvester StartAssociatedDeviceHarvesting : Started Thread to start DeviceData Harvesting
2021/2/10 15:48:49 Notice

 

There are other code enclosed in the second bracket, like [3827], [3880] and [3796] from the log downloaded from the current modem. From a previous modem, I was logging identical "Harvester" events with a different set of code: [3650], [3648], [3649], [3650] ......

 

Two things bugged me given the current pandemic situation: 1. that the technical support person refused to interprate those error messages, and 2. the tech support person insist that there is nothing wrong with the current modem. I was told someone shall come on-site to troubleshoot. Personally, I doubt if it shall worth the risk and wonder if anyone can help interprate those error logs.

 

And, a bit more evidence on the current (maybe faulty) modem:

I replaced the modem on Jan 16 at a local Xfinity store. According to the logs, the first internet outage should have taken place the next day. To add to the frastraction, the xFi modem is not always accessible at 10.0.0.1: when the outage happens, I cannot reach the local IP of the modem. Minutes after the outage, I was able to log in as "admin" with passwords I changed back on Jan 16. Moments later, I can no longer log in as "admin" with the same password. The page shall complain about "wrong password" 🙂 Using the default "password" as the password also does not log me into the xFi modem. I personally take these as a sign of a faulty modem.

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llinfeng

Frequent Visitor

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8 Messages

10 d ago

I did not notice any reset/restart of the XB7 modem after removing my TP-link router (Archer AX6000) from the network. So, the solution in short is to use the Xfinity modem all by itself and call it a day.

llinfeng

Frequent Visitor

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8 Messages

1 m ago

I moved within the same block in May, and the problem game back again at a higher frequency lately (up to 4 times in a day, during daytime). Including this post, there are another two potsts where folks were having the same problem with the XB7 modem.

The troubleshooting steps include:

1. Put the modem in bridge mode and monitor the downstream/upstream signal strength (Under Gateway/Connection/XFINITY Network)

2. (Advised by on-site support) Keep only one device with the modem and see if the problem repeats

3. (Advised by on-site support) Insteal a "test modem" that seats side-by-side with the XB7 modem (need local office to provide such equipment, and requires an on-site visit again).

Here are two possible "reasons" for the event logs stating "[Harvester][####]: Harvester StartRadioTrafficHarvesting ..."

  1. Certain parts of the xFi service may trigger such event and initiate a "soft reset" on the XB7 modem. (I am not using xFi. The modem is on Bridge mode at all times.)
  2. Certain incoming/outgoing **packet** may trigger such event. This shall bring up a "soft reset" on the XB7 modem.

I don't quite understand the underlying mechanism. Yet, if I understand what was mentioned in #2, it does not feel safe to know that one who knows my IP may send over a paket to restart my modem?? Or, that I can "soft reset" the modem by sending over a "packet" from devices at home to the modem? This may well be an interesting feature to learn more about, then.

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