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Gemini G3 - User Manual
40
Example (Directed Broadcast forwarding disabled)
Figure 34 - Example of Directed broadcast forwarding disabled
In this example (Figure 34), directed broadcast forwarding is enabled on the
Base
unit and disabled
on the
Mobile (1)
unit. If
Sender
sends a packet to destination address 172.30.1.255, the packet
would be discarded by
Mobile (1),
it would not reach
Mobile Host (1),
Mobile Host (2)
and
Mobile
Host (3).
If the user wants the
Base
unit to do the discarding of the directed broadcast packets, then the directed
broadcast forwarding must be disabled on the
Base
unit itself.
4.7.3.6.1.1.2
Limited Broadcast
The “
Limited Broadcast
” enabled/disabled option buttons control
limited broadcast
packets forward-
ing. When enabled, the unit forwards limited
broadcast
packets.
Upon reception of a
limited broadcast
packet, the unit takes the following actions:
•
Keeps a copy for itself (passes to internal applications, if any).
•
If
limited broadcast
packets can be forwarded (Limited Broadcast is enabled):
Sends a copy of the packet out to all the interfaces with the exception of the interface where the
packet was received.
•
If
limited broadcast
packets cannot be forwarded (Limited Broadcast is disabled):
Silently discards the packet.
Sender
Base (P3)
Mobile (1)
172.30.1.1/24
Mobile (2)
172.30.3.1/24
10.0.0.1/8
10.0.0.2/8
10.0.0.4/8
Directed broadcast forward-
ing enabled
Directed broadcast forward-
ing disabled
Send to 172.30.1.255