21 Oct
2021
21 Oct
'21
11:40 a.m.
Here is a small tcpdump with the ping from A34RTR (34.1023) and FORGER (34.101) for anyone
to dig into.
Full pcap file added as attachment.
10:29:02.072710 34.1023 > 34.101 100 link-service 35839>34917 seg 0 dat seg count 0
10:29:02.082747 34.101 > 34.1023 28 disconn-confirm 34917>35839 no link terminate
10:29:02.083147 34.1023 > 34.101 100 link-service 35839>34917 seg 0 dat seg count 0
10:29:02.105797 34.101 > 34.1023 28 disconn-confirm 34917>35839 no link terminate
10:29:02.106169 34.1023 > 34.101 100 link-service 35839>34917 seg 0 dat seg count 0
10:29:02.124764 34.101 > 34.1023 28 disconn-confirm 34917>35839 no link terminate
10:29:02.125142 34.1023 > 34.101 100 link-service 35839>34917 seg 0 dat seg count 0
10:29:02.143922 34.101 > 34.1023 28 disconn-confirm 34917>35839 no link terminate
10:29:02.144279 34.1023 > 34.101 100 link-service 35839>34917 seg 0 dat seg count 0
10:29:02.163085 34.101 > 34.1023 28 disconn-confirm 34917>35839 no link terminate
BR
/t
?Den 2021-10-20 19:03 skrev "owner-hecnet at Update.UU.SE p? uppdrag av Paul
Koning" <owner-hecnet at Update.UU.SE p? uppdrag av paulkoning at comcast.net>
f?ljande:
Thanks! BTW, I've been doing some work on Wireshark to fix its DECnet decoding,
there are quite a bunch of errors in there.
paul
On Oct 20, 2021, at 12:59 PM, Dave McGuire <mcguire
at neurotica.com> wrote:
On 10/20/21 12:54 PM, Paul Koning wrote:
Ok, then
it's anyone's guess what it does; Cisco doesn't really understand DECnet or
know how to read the specs. It would be informative to capture a packet trace showing
what was sent and received.
Seems to work pretty well here, and has for the better part of thirty years, for me.
If I get any desk time soon I'll see if I can capture some traces for you.
-Dave
--
Dave McGuire, AK4HZ
New Kensington, PA
> Say, that is a very nice ping utility you have!
Would you know where I could get the source to it or its theory of operation?
I wonder too. The DEC standard answer would be an "NCP loop node foo" command,
which is an application protocol but a simple one (mirror, object 25).
The ping command that he illustrated is from IOS on a Cisco router.