[HECnet] Same MAC address on different nodes

[Johnny Billquist]

On 2014-05-24 23:19, Jean-Yves Bernier wrote:
At 10:26 PM +0200 24/5/14, Johnny Billquist wrote:

If I were to guess, there are packets dropped.

I can see the segment counter running backward at times, like this:

23:15:56.109519 10.2 > 10.1 586 data 45058>40193 seg 18
23:15:56.109855 10.2 > 10.1 378 data 45058>40193 seg 19
23:15:56.110118 10.2 > 10.1 586 data 45058>40193 seg 20
23:15:56.110277 10.2 > 10.1 586 data 45058>40193 seg 21
23:15:56.110548 10.2 > 10.1 586 data 45058>40193 seg 22
23:15:56.110736 10.2 > 10.1 364 data 45058>40193 seg 23
23:15:56.196612 10.2 > 10.1 586 data 45058>40193 seg 24
23:15:56.196816 10.2 > 10.1 586 data 45058>40193 seg 25
23:15:56.197113 10.2 > 10.1 586 data 45058>40193 seg 26
23:15:56.197316 10.2 > 10.1 394 data 45058>40193 seg 27
23:16:06.113164 10.2 > 10.1 586 data 45058>40193 seg 20
23:16:06.113458 10.2 > 10.1 586 data 45058>40193 seg 21
23:16:06.113664 10.2 > 10.1 586 data 45058>40193 seg 22
23:16:06.113994 10.2 > 10.1 364 data 45058>40193 seg 23
23:16:06.114152 10.2 > 10.1 586 data 45058>40193 seg 24
23:16:06.114304 10.2 > 10.1 586 data 45058>40193 seg 25
23:16:06.114657 10.2 > 10.1 586 data 45058>40193 seg 26
23:16:06.117048 10.2 > 10.1 394 data 45058>40193 seg 27

I sdon't know how good the tcpdump DECnet parsing is. I would prefer to look at the counters in DECnet instead.
But this would seem to suggest that you have retransmissions as well, yes.

	Johnny

-- 
Johnny Billquist                                   || "I'm on a bus
                                                                  ||   on a psychedelic trip
email: bqt at softjar.se                         ||   Reading murder books
pdp is alive!                                         ||   tryin' to stay hip" - B. Idol