Carlos E. R. wrote:
Isengard:~ # while sleep 1 ; do DATE=`date --iso=s` ; echo -n "$DATE " ; fping -c 20 --period=100 --quiet 2a02:...80d4 ; done
2023-04-19T10:11:07+02:00 2a02:...:80d4 : xmt/rcv/%loss = 20/16/20%, min/avg/max = 0.45/0.53/0.69 2023-04-19T10:11:10+02:00 2a02:...:80d4 : xmt/rcv/%loss = 20/0/100% 2023-04-19T10:11:13+02:00 2a02:...:80d4 : xmt/rcv/%loss = 20/11/45%, min/avg/max = 0.47/1.09/5.45
What do you make of 100%& loss?
Even at 10 pings/second, that is surely not right. Some questions are - a) do the echo requests reach your router? b) does your router respond with echo replies? c) does isengard receive the echo reply?
telcontar, same period
2023-04-19T10:10:01+02:00 router : xmt/rcv/%loss = 100/86/14%, min/avg/max = 0.27/0.39/4.83 2023-04-19T10:10:12+02:00 router : xmt/rcv/%loss = 100/92/8%, min/avg/max = 0.22/0.38/4.82 2023-04-19T10:10:23+02:00 router : xmt/rcv/%loss = 100/88/12%, min/avg/max = 0.27/0.39/4.13
10% unanswered pings still seems pretty high, even at 10/sec, but way better. What is the difference between isengard and telcontar?
I think I would try some large download, maybe an ISO file and then keep an eye on the interface stats. Run wireshark and look for tcp errors. Something like that.
I'll buy that. But I don't know if this will show the errors between router and switch:
router--1--SW1--2--SW2--3---telcontar
The problem is in "1" when going to SW2.
I assume 1, 2 and 3 are cables/connections? physical or wireless? Your pings from telcontar (above) traverse both switches, yet "performance" is better. I presume isengard is connected to sw1 ?
in black:
I don't do html :-)
The capture file is 600 MB, if you want it.
Even if I did, I would want the raw file. A lot of "TCP Out-of-Order" would make me curious. In the very beginning, I also see a couple of interesting entries:
16 10:24:53.327894931 192.168.1.14 192.168.1.16 ICMP 125 Destination unreachable (Port unreachable)
18 10:24:53.327937181 192.168.1.14 1.1.1.1 ICMP 125 Destination unreachable (Port unreachable)
20 10:24:53.328056641 192.168.1.14 1.0.0.1 ICMP 125 Destination unreachable (Port unreachable)
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