Hi, On Thu, Aug 20, 2020 at 12:05:07AM +0700, Eugene Grosbein wrote: > > Otherwise, ask the router - "debug arp" - and for each ARP request you > > see it issue, check the routing whether it points directly to an > > interface. > > Well, I have packet capture in my analyzer and I see all the details there, > like this:
This is missing the point. The router will tell you more on "what it
thinks the interface is".
[..]
> > (And never believe what switches say about tagging vs. not)
>
> I've saved capture to PCAP file and verified it with Wireshark, no tags.
> Still cannot understand why no tags.
On many platforms, monitoring ports will not show the original tag.
(On Cat6500, tags will only be shown if the *destination* port is set
to "switchport mode trunk", for example)
gert
--
"If was one thing all people took for granted, was conviction that if you
feed honest figures into a computer, honest figures come out. Never doubted
it myself till I met a computer with a sense of humor."
Robert A. Heinlein, The Moon is a Harsh Mistress
Gert Doering - Munich, Germany [email protected]
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