I have a new network going in place that's going to coexist with an existing network as a secondary IP address on the interface. We have an application that uses broadcast to communicate. I configured "ip directed broadcast" but it hasn't been working. Is this possible to do with a secondary address? Interface configuration is below:
ip address 192.168.0.13 255.255.255.0 secondary
ip address 10.61.8.1 255.255.255.0
ip helper-address 10.61.1.26
I do not see a problem in this config. If a packet with destination address of 192.168.0.255 gets to the interface then I would expect that it would be sent out into the vlan as a local broadcast. Note that this broadcast would also be seen by host in the 10.68.8 network. Are you sure that packets for 192.168.0.255 are getting to the interface?