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
