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Re: firmware: Davicom DM96xx USB 10/100 Ether ... (which package do I need for that Ethernet interface?)

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	Hi.

On Thu, Jun 24, 2021 at 09:42:06AM -0400, Albretch Mueller wrote:
> // __ rötlich blinkende Router und USB-RJ45-Schnittstelle ...
> 
>  https://forum.vodafone.de/t5/Internet-Geräte/rötlich-blinkende-Router-und-USB-RJ45-Schnittstelle/m-p/2659178/
> ~
>  it was written in German, because I was trying to directly ask on
> vodafone's fora, but I think based on the linux commands I included,
> anyone could see what I mean.

Exactly this is considered inappropriate here, at this list.
First, the official language of debian-user is English.
Second, forum links are volatile, today they work, and tomorrow they do
not.

The essential thing that I saw there was:

eth1: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast
state DOWN mode DEFAULT group default qlen 1000
link/ether 00:e0:4c:53:44:58 brd ff:ff:ff:ff:ff:ff

Which shows us that:

1) Either your Ethernet cable is damaged, or it simply is not connected
at other side. Or maybe you're trying to use cross-over Ethernet cable
instead of straight-through one, or vise versa. In short, OSI Layer 1
problem.
2) Or, advertised 100Mbps full-duplex Ethernet frames are simply not
being accepted by the other side. That's OSI Layer 2 problem.


I'd start with replacing the cable, followed by disabling autonegotiation,
and tinkering with full-duplex/half-duplex modes (ethtool), and as a
last resort I'd consider both kernel upgrade or replacing the faulty
device altogether.

For instance, ASIX AX8817X based USB-Ethernet converters simply work for
me, and even advertise 1Gbps (limited to 300Mbps in practice, of course).

Reco

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firmware: Davicom DM96xx USB 10/100 Ether ... (which package do I  need for that Ethernet interface?) Albretch Mueller <lbrtchx@gmail.com> - 2021-06-24 14:00 +0200
  Re: firmware: Davicom DM96xx USB 10/100 Ether ... (which package do I  need for that Ethernet interface?) Albretch Mueller <lbrtchx@gmail.com> - 2021-06-24 15:30 +0200
    Re: firmware: Davicom DM96xx USB 10/100 Ether ... (which package do  I need for that Ethernet interface?) Reco <recoverym4n@enotuniq.net> - 2021-06-24 15:40 +0200
    Re: firmware: Davicom DM96xx USB 10/100 Ether ... (which package do I  need for that Ethernet interface?) Albretch Mueller <lbrtchx@gmail.com> - 2021-06-24 15:50 +0200
      Re: firmware: Davicom DM96xx USB 10/100 Ether ... (which package do I  need for that Ethernet interface?) Albretch Mueller <lbrtchx@gmail.com> - 2021-06-24 15:50 +0200
      Re: firmware: Davicom DM96xx USB 10/100 Ether ... (which package do  I need for that Ethernet interface?) Reco <recoverym4n@enotuniq.net> - 2021-06-24 16:00 +0200
        Re: firmware: Davicom DM96xx USB 10/100 Ether ... (which package do I  need for that Ethernet interface?) Albretch Mueller <lbrtchx@gmail.com> - 2021-06-26 21:30 +0200
          Re: firmware: Davicom DM96xx USB 10/100 Ether ... (which package do I  need for that Ethernet interface?) Albretch Mueller <lbrtchx@gmail.com> - 2021-06-26 21:30 +0200
            Re: firmware: Davicom DM96xx USB 10/100 Ether ... (which package do  I need for that Ethernet interface?) Reco <recoverym4n@enotuniq.net> - 2021-06-26 21:40 +0200
              Re: firmware: Davicom DM96xx USB 10/100 Ether ... (which package do I  need for that Ethernet interface?) Albretch Mueller <lbrtchx@gmail.com> - 2021-06-29 14:00 +0200
                Re: firmware: Davicom DM96xx USB 10/100 Ether ... (which package do  I need for that Ethernet interface?) Reco <recoverym4n@enotuniq.net> - 2021-06-29 14:10 +0200
  Re: firmware: Davicom DM96xx USB 10/100 Ether ... (which package do  I need for that Ethernet interface?) Reco <recoverym4n@enotuniq.net> - 2021-06-24 15:30 +0200

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