•
If directed broadcast packets can be forwarded (Directed Broadcast is enabled):
Forwards the packet according to the routing table.
•
If directed broadcast packets cannot be forwarded (Directed Broadcast is disabled):
Silently discards the packet.
Note:
Occasionally, the unit cannot determine that the packet is actually a
directed broadcast
. In such a case,
the packet is normally routed.
EXAMPLE (DIRECTED BROADCAST FORWARDING ENABLED)
Figure 33 - Example of Directed broadcast forwarding enabled
In this example Figure 33, directed broadcast forwarding is enabled on the
Base
unit and on
Mobile (1)
unit. If
Sender
wants to reach
Mobile Host (1)
,
Mobile Host (2)
and
Mobile Host (3)
with a single packet, he can send
to destination address 172.30.1.255.
Sender
Base (P4)
Mobile Host(2)
172.30.1.3/24
Mobile Host(3)
172.30.1.4/24
Mobile (1)
172.30.1.1/24
Mobile (2)
172.30.3.1/24
Mobile Host(1)
172.30.1.2/24
Mobile Host(4)
172.30.3.2/24
Directed broadcast forwarding
enabled
Directed broadcast forwarding
enabled
Send to 172.30.1.255
10.0.0.1/8
10.0.0.2/8
10.0.0.4/8
50