[c-nsp] ARP requests

[Gert Doering]

Hi,

On Wed, Aug 19, 2020 at 10:03:29PM +0700, Eugene Grosbein wrote:
> I have not such routes: the command "show ip route | include 0/1$" shows nothing.
> The interface Gi0/1 does not have any IP configuration itself, only its sub-interfaces have.

Do you have a subinterface with no "encaps dot1q ..." configured?  That
would be "untagged" then.

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.

(And never believe what switches say about tagging vs. not)

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                             gert at greenie.muc.de
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