I think that in your configuration the router should also have ARP entries, that way it can function easily. There may be no problem keeping the ARP entries only in Core devices although it may have some effect on the throughput.
Generally speaking ARP enrties are localized within a layer-2 domain i.e. within a vlan should should only have entries of hosts within that vlan. Hence in your scenario a p2p link connections to ur ISP would be a single layer-2 domain and therefore arp entries should reside on you devices terminating these connections.
Hi everyone, I would like to thank you in advance for any help you can provide a newcomer like myself!
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