Private VLAN on Arista EOS Switch (How ISP isolates traffic between subscribers)
The other day, I was looking at the arp table entry for my home router and found a funny thing going on - $ show arp Address HWtype HWaddress Iface 10.10.10.1 ether 04-96-AF-EF-C6-53 eth0 10.10.10.10 ether 04-96-AF-EF-C6-53 eth0 Above arp table is an example hiding the actual IP addresses and MAC addresses. Here my IP address is let's say - 10.10.10.50/24 and GW is 10.10.10.1 . Now the question comes why another subscriber of the ISP in the same subnet (10.10.10.10) also have same mac address as my GW (04-96-AF-EF-C6-53). We are in the same IP network/VLAN (ISP definitely configured those), but my router cannot see the actual MAC address of other devices in the network. The reason is that my ISP is i...