I am trying to configure a port on 2811 router fa0/0 to contain 3 IP address. I tried using subinterfaces but it doesn't work. Telling me that it only works if the port is configured for vlan trunking. Is it not possible?
under the interface:-
ip address z.z.z.z y.y.y.y
ip address x.x.x.x w.w.w.w secondary
z.z.z.z = ip address **primary**
y.y.y.y = mask for primary IP address
x.x.x.x = ip address **secondary**
w.w.w.w = mask for secondary IP address