412 CHAPTER 16: INTERNET PROTOCOL (IP)
ip interface
✓ 3500
✓ 9000
9400
3900
9300
directedBroadcast
For CoreBuilder 9000: Applies to Layer 3 switching modules only.
Specifies whether the forwarding of a directed broadcast (all 1s in the
host portion of the address) is enabled or disabled for a spec ified
interface. A directed broadcast is a packet that is sent to a specific
network or series of networks.
Valid Minimum Abbreviation
ip i di
Important Considerations
■You define the directed broadcast state on a per-interface basis.
■When the state is enabled and the system determines that the
destination is differen t from the interface that is receiving the directed
broadcast, the system uses the broadcast address that is defined for
this interface to forward the directed broadcast.
■You can disable the forwarding of a directed broadcast if security is an
issue.
■By default, the directed broadcast state is enabled .
Options
IP Interface Directed Broadcast Example (3500 )
Select menu option (ip/ interface): directedBroa dcast
Select IP interfaces (1 ,2|all|?):2
Interface 2 - Enter directed broa dc ast state
(disabled, enabled) [enabled]:
Prompt Description Possible Values [Default]
IP interfaces Index numbers of the interfaces
to which you wa nt to enable or
disable the forwarding of a
directed broadcast.
(Not applicable if you h ave more
than one interface)
■One or more
selectable
interface
indexes
■all
■? (for a list of
selectable
interface
indexes)
Current
value
Directed
broadcast state
Whether you want to implement
direct broadcast on an interface.
The system prompts you for a
state for each interface.
■enabled
■disabled
Current
value