Network Broadcast generated by a host which is not the part of the destination broadcast network.
For example, host with ip 10.1.1.10/24 is generating traffic for 192.168.1.255/24. The intermediate routers are forwrding the packet as they do for unicast packet. It can lead to smurf(DoS) attacks and hence it is suggested to dsiable it. It is disabled from 12.x IOS version.
Destination ip never be 255.255.255.255 but a network broacast IP for example in 10.1.1.0/24 subnet, traffic for IP 10.1.1.255.
Configuration:-
Int Fa0/0
ip directed-broadcast
Disable directed broadcast:-
Int fa0/0
no ip directed-broadcast
For example, host with ip 10.1.1.10/24 is generating traffic for 192.168.1.255/24. The intermediate routers are forwrding the packet as they do for unicast packet. It can lead to smurf(DoS) attacks and hence it is suggested to dsiable it. It is disabled from 12.x IOS version.
Destination ip never be 255.255.255.255 but a network broacast IP for example in 10.1.1.0/24 subnet, traffic for IP 10.1.1.255.
Configuration:-
Int Fa0/0
ip directed-broadcast
Disable directed broadcast:-
Int fa0/0
no ip directed-broadcast
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