I have 2 Nortel Passport 8610 as a backbone switch and configure with some vlans. Each vlan have an ip address and a VRRP address which serve as a D.G.
A few days ago someone connected a new server to vlan 10 and configure it with an ip address of the VRRP ip address.
Of course this cause a duplicate IP and all the server connected to this vlan changed the mac address of this server instead of the VRRP mac address which cause a network downtime.
Is there any feature at cisco 6500 & catalyst switches that could prevent from this being happening ?
If there is any solution/ feature it will help me to convince my bosses to replace our backbone to CISCO.