Do secondary IP addresses on a router interface create, in effect, separate broadcast domains?
For example (using 24-bit masks):
ip address 192.168.1.1 secondary
ip address 10.1.1.1
Are PCs in the 192.168 subnet considered to be in a different broadcast domain than PCs in the 10.1 subnet? If so, then does that mean that broadcasts generated by devices in 192.168 will not be propagated across switches to devices in the 10.1?