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My connection is also dropping anywhere from every 30-60 minutes,

SystemSystem Posts: 37 ADMIN
in Connectivity Sep 08, 2020
This discussion was created from comments split from: Internet cuts out every 30 - 40 minutes.

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  • SancSanc Posts: 1
    edited September 7 Sep 07, 2020

    My connection is also dropping anywhere from every 30-60 minutes, and at times up to every 3-4 minutes. It's driving me insane, and support at Spectrum can't tell me any more than "we have to send a technician" - ok, fine - but their next appointment is a week and a half out!

    So I read here that the modem upstream should be no more than 49 - mine is a little higher:

      Upstream Power Level:

    Channel 1: 51.0 dBmV

    Channel 2: 51.0 dBmV

    Channel 3: 51.0 dBmV

    Channel 4: 0.0 dBmV

    Would this cause the internet droppage?

    Downstream Power Level:

    Power Level: Signal to Noise Ratio:

    Channel 1: -3.8 dBmV 39.3 dB

    Channel 2: -3.8 dBmV 39.4 dB

    Channel 3: -3.7 dBmV 39.3 dB

    Channel 4: -3.7 dBmV 39.3 dB

    Channel 5: -3.8 dBmV 38.7 dB

    Channel 6: -4.0 dBmV 38.6 dB

    Channel 7: -3.8 dBmV 38.6 dB

    Channel 8: -4.2 dBmV 38.1 dB

    Channel 9: -4.3 dBmV 38.4 dB

    Channel 10: -4.4 dBmV 38.3 dB

    Channel 11: -4.1 dBmV 38.3 dB

    Channel 12: -4.0 dBmV 38.3 dB

    Channel 13: -3.8 dBmV 38.2 dB

    Channel 14: -3.3 dBmV 38.0 dB

    Channel 15: -3.2 dBmV 37.7 dB

    Channel 16: -3.4 dBmV 37.7 dB


    ROUTER: SAGEMCOM [email protected]:

    I also have these errors constantly on the router:

    Sep 6th, 5:16:00 pm firewall-app Alert getInterfaceAddress(302) : Ioctl failed [interface = BR_LAN:1] (error = -1) !

    Sep 6th, 5:16:00 pm firewall-app Alert getInterfaceAddress(302) : Ioctl failed [interface = BR_LAN:2] (error = -1) !

    Sep 6th, 5:16:00 pm firewall-app Alert getInterfaceAddress(302) : Ioctl failed [interface = BR_LAN:3] (error = -1) !

    as well as:

    Sep 6th, 5:04:16 pm hg6d Error xtime_add_millisecs(78): unexpected input

    Sep 6th, 5:04:16 pm hg6d Error xtime_add_millisecs(78): unexpected input

    Sep 6th, 5:04:16 pm hg6d Error xtime_add_millisecs(78): unexpected input

    as well as:

    Sep 6th, 5:13:35 pm hg6d Error [GREMANAGEMENT-OSM] AddAssocDevtoMacFiltering(960): Current number of blacklisted devices is [32]

    Sep 6th, 5:13:35 pm hg6d Error [GREMANAGEMENT-OSM] AddAssocDevtoMacFiltering(971): MacAddress [02:0f:b5:02:c0:fe] exists already in filtering list

    Sep 6th, 5:13:35 pm hg6d Error [GREMANAGEMENT-OSM] AddAssocDevtoMacFiltering(960): Current number of blacklisted devices is [32]

    Sep 6th, 5:13:35 pm hg6d Error [GREMANAGEMENT-OSM] AddAssocDevtoMacFiltering(971): MacAddress [18:b4:30:4e:e4:e7] exists already in filtering list

    and

    Sep 6th, 5:13:46 pm hg6d Error [ARP-SMU] getPreviousMacAddrUsingIpAddr(123): IP addr c0a801f6 not found.

    UPNP LOGS:

    And on the upnp logs, tons of these also come:

    getInterfaceAddress(302) : Ioctl failed [interface = BR_LAN:1] (error = -1) !

    getInterfaceAddress(302) : Ioctl failed [interface = BR_LAN:2] (error = -1) !

    as well as this about a million times:

    xtime_add_millisecs(78): unexpected input

    xtime_add_millisecs(78): unexpected input


    I don't know if the upnp Advertisement Period has anything to do with it, but that's set at 1800, and everything I've read says 1440 max. Hops are set at 4.

    The reason I put so much info about the router, is that the modem is where the phone line is, and the phone never drops. The router is connected via the modem, but if it were a modem problem, wouldn't the phone signal drop as well when the internet does? (my logical, not technical brain)

    I don't think I can remain sane for another week and a half with this happening. I can't even work without having to make my phone a hotspot for my computer (and anything else I need a stable connection for more than 10 minutes at a time)

    (but if I walk away with my phone, that's done)

    Any help you can give would be much appreciated!!

    One other question - if it is because of the 51 upstream power level - how would I resolve that issue?

    Thanks!!

  • RAIST5150RAIST5150 Posts: 794 ✭✭✭✭
    edited September 7 Sep 07, 2020

    @Sanc

    need to reduce noise/losses on the line. Cleaner signal may bring all your SNR up to or over 38, less resistance along the line may bring downstream up a little, and upstream down a little. Downstream tends to risk more issues as you approach/go below -6 and/or SNR moves below 37-ish. Upstream at 51+ can cause those channels to flake out periodically and eventually lead to the modem rebooting on it's own.

    Check for loose/corroded connections, unneeded splitters (or more splits than you actually need to serve the devices you use), compromised cable shielding, and cables way too long for where they need to go (potentially wound up in coils) or taking any bends sharper then about the curve you would see around a 2-liter soda bottle. Any stressed/kinked cabling should be replaced, corroded connectors replaced (can be tricky to replace connectors without proper tools... at the very least clean/dry them up best you can).

  • SamBSamB Posts: 1
    Sep 08, 2020

    Exactly what @RAIST5150 said. If by doing all of that and you still experience issues, you may have a bad drop (main line coming into the house). In that instance, you will need a Spectrum technician to replace it. @Sanc

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