I am facing an issue which is very strange to me. The Goal is to find out the Interface/port of the switch named SW-1 where the Host is connected.
I have a host connected to one of the access layer switch SW-1. I am able to ping the host using its IP address 10.2.48.1 and using "show arp" / "show mac address" command from any of the distribution switch I am getting the MAC address of the host as c0-62-6b-e3-5d-40 to uplink port connecting to the access layer switch SW-1
Login into the particular SW-1 switch, I am able to ping IP address 10.2.48.1. But whereas I am not able to see its mac address using the commands "show arp" / "show mac address". No entries is found for this IP address /MAC address
If you ping the IP address from any other subnet than the subnet that has the host i.e 10.2.48.1, your only going to get the MAC address of the next hop Device. You need to either jump on a server in the 10.2.48 subnet, ping 10.2.48.1 and from a dos prompt do a "Arp -a" OR jump on the Layer 3 device that routes to the 10.2.48 Subnet(has an interface in that very subnet), perform a ping and "show ip arp". Once you have confirmed thats the correct host mac, jump onto the switch and look at the mac address table there.
As mentioned earlier, my intention is to find out the port in which the host is connected. I know the IP address & MAC address from the uplink switches connected to the said access switch SW-1
SW-1 is a 6509 switch working in L3 mode. By issuing the command "show mac address" i am not seeing the entry for the MAC address of the host. neither "show arp" shows the entry. However I am able to ping the IP Address.
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