NIC gone nuts - Page 2

Nick · 2020-05-31, 20:03

It would be interesting to know what the "going nuts" entails.
Do your switches have statistics recording malformed frames, for example?

Prime95 · 2020-05-31, 20:27

Quote:

Originally Posted by Nick

It would be interesting to know what the "going nuts" entails.
Do your switches have statistics recording malformed frames, for example?

I doubt it. These are cheap netgear / linksys switches.

storm5510 · 2020-05-31, 22:34

Quote:

Originally Posted by Prime95

My latest desperate attempt is a 50 ft' ethernet cable connected to the router connected to the cable modem -- bypassing as much local networking gear as possible. I don't have much hope this will make a difference.

At first, I thought the setup, in bold, was backwards until I considered the 50 ft. cable. Did you try taking the router out of the loop? Doing so would reduce your connections. It would also eliminate, or confirm, one potential source...

PhilF · 2020-06-01, 22:05

Quote:

Originally Posted by Prime95

How a GPU blip would cause a NIC problem that takes down the entire local network is a mystery to me.

Problems like this can be tricky. I have seen similar things happen if the IP address of a machine conflicts with something else on the network.

If you are using DHCP to get the IP address, try manually assigning a static IP address that you know is safe to the machine via the /etc/network/interfaces file. Mine looks something like this (the original dhcp line is commented out):

Code:

# The primary network interface
allow-hotplug enp2s0
#iface enp2s0 inet dhcp
iface enp2s0 inet static
	address 192.168.1.33
	netmask 255.255.255.0
	gateway 192.168.1.1

S485122 · 2020-06-02, 06:39

If your DHCP server (on the router I suppose) permits it, try assigning reservations. Check that none of your nicks have a DHCP server running : having concurrent DHCP servers gives interesting results.

Totally unrelated, should be in the unhappy me thread, but I got shingles, of course on the eve of a long week-end, confused it with a kidney stone since the pain is of the same nature and at the same place. I think I understand now what you endured, in 2013 if memory serves. At the moment I feel like a chemical recycling plant with all the pain medication I was prescribed and for once ingested as well.

Jacob.

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2020-05-31, 20:03	#12
Nick Dec 2012 The Netherlands 1,759 Posts	It would be interesting to know what the "going nuts" entails. Do your switches have statistics recording malformed frames, for example?

2020-06-02, 06:39	#16
S485122 "Jacob" Sep 2006 Brussels, Belgium 5×19² Posts	If your DHCP server (on the router I suppose) permits it, try assigning reservations. Check that none of your nicks have a DHCP server running : having concurrent DHCP servers gives interesting results. Totally unrelated, should be in the unhappy me thread, but I got shingles, of course on the eve of a long week-end, confused it with a kidney stone since the pain is of the same nature and at the same place. I think I understand now what you endured, in 2013 if memory serves. At the moment I feel like a chemical recycling plant with all the pain medication I was prescribed and for once ingested as well. Jacob.