PurposeCommand or Action
(Optional) Specifies an IRDP address and preference
to proxy-advertise.
ip irdp address address [number]
Example:
Device(config-if)# ip irdp
address 10.1.10.10
Step 10
Returns to privileged EXEC mode.end
Example:
Device(config)# end
Step 11
Verifies settings by displaying IRDP values.show ip irdp
Example:
Device# show ip irdp
Step 12
(Optional) Saves your entries in the configuration file.copy running-config startup-config
Example:
Device# copy running-config
Step 13
startup-config
Configuring Broadcast Packet Handling
Perform the tasks in these sections to enable these schemes:
•
Enabling Directed Broadcast-to-Physical Broadcast Translation
•
Forwarding UDP Broadcast Packets and Protocols
•
Establishing an IP Broadcast Address
•
Flooding IP Broadcasts
Enabling Directed Broadcast-to-Physical Broadcast Translation
By default, IP directed broadcasts are dropped; they are not forwarded. Dropping IP-directed broadcasts makes
routers less susceptible to denial-of-service attacks.
You can enable forwarding of IP-directed broadcasts on an interface where the broadcast becomes a physical
(MAC-layer) broadcast. Only those protocols configured by using the ip forward-protocol global configuration
command are forwarded.
You can specify an access list to control which broadcasts are forwarded. When an access list is specified,
only those IP packets permitted by the access list are eligible to be translated from directed broadcasts to
Routing Configuration Guide, Cisco IOS XE Everest 16.6.x (Catalyst 9500 Switches)
71
Configuring IP Unicast Routing
Configuring Broadcast Packet Handling
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