Is there a way to configure either a switch or a router at a small remote site to find rogue DHCP servers such as a user plugging in a home wireless router that issues IP addresses to clients?
I know we could configure DHCP Snooping to only allow DHCP broadcasts from a particular MAC Address (in this case we issue legitimate DHCP addresses from the remote sites 3845 router) however I would be happier to be able to just determine a particular switch port that has a rogue DHCP server on it and shut it down.
Is there an easy way to do this?
The basic configuration of a typical remote site would be something like this:
Typically Remote Routers would be 2800 or 3800 series (Acting as the gateway and DHCP Server) and the switches vary but could be in the 3550, 2960, or similar switches. The remote sites are on a single layer 2 VLAN/Subnet.
how do we restrict a router interfaces from directly connected to Some vlans? can any one help me to figureout?the question is Router should not have interfaces directly connected to Vlan 30 and Vlan 40
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