Reference Guide

Interfaces | 629
ip udp-broadcast-address
e
Configure an IP UDP address for broadcast.
Syntax
ip udp-broadcast-address address
To delete the configuration, use the no ip udp-broadcast-address address command.
Parameters
Defaults
Not Configured
Command Modes
INTERFACE (config-if)
Usage
Information
When a UDP broadcast packet is flooded out of an interface, and the outgoing interface is configured
using this command, the outgoing packet’s IP destination address is replaced with the configured
broadcast address.
Related
Commands
ip udp-helper udp-port
e
Enable the UDP broadcast feature on an interface either for all UDP ports or a specified list of UDP
ports.
Syntax
ip udp-helper udp-port [udp-port-list]
To disable the UDP broadcast on a port, use the no ip udp-helper udp-port [udp-port-list]
command.
Parameters
Defaults
No default behavior or values
Command Modes
INTERFACE (config-if)
Usage
Information
If the ip helper-address command and ip udp-helper udp-port command are configured, the
behavior is that the UDP broadcast traffic with port numbers 67/68 will be unicast relayed to the DHCP
server per the ip helper-address configuration. This will occur regardless if the ip udp-helper
udp-port command contains port numbers 67/68 or not.
If only the ip udp-helper udp-port command is configured, all the UDP broadcast traffic is flooded,
including ports 67/68 traffic if those ports are part of the udp-port-list.
Related
Commands
address
Enter an IP broadcast address in dotted decimal format (A.B.C.D).
debug ip udp-helper Enable debug and display the debug information on a console.
show ip udp-helper Display the configured UDP helper(s) on all interfaces.
udp-port-list
(OPTIONAL) Enter up to 16 comma separated UDP port numbers.
Note: If this option is not used, all UDP Ports are considered by default.
ip helper-address Configure the destination broadcast or host address for DHCP server.
debug ip udp-helper Enable debug and display the debug information on a console.
show ip udp-helper Display the configured UDP helper(s) on all interfaces.