Dell Command Line Reference Guide for the S4048–ON System 9.14.2.5

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ip udp-helper udp-port

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
udp-port-list
(OPTIONAL) Enter up to 16 comma-separated UDP port numbers.
NOTE: If you do not use this option, all UDP ports are considered by default.
Defaults
None
Command Modes
INTERFACE (config-if)
Command History

This guide is platform-specific. For command information about other platforms, see the relevant Dell EMC Networking OS Command Line Reference Guide.

Version
Description
9.8(0.0P5)
Introduced on the S4048-ON.
9.8(0.0P2)
Introduced on the S3048-ON.
9.2(1.0)
Introduced on the Z9500.
8.3.19.0
Introduced on the S4820T.
8.3.11.1
Introduced on the Z9000.
8.3.7.0
Introduced on the S4810.
Pre-version 8.3.7.0
Introduced on the E-Series.
Usage Information

If you configure the ip helper-address command and ip udp-helper udp-port command, the behavior is that the UDP broadcast traffic with port numbers 67/68 is unicast relayed to the DHCP server per the ip helper-address configuration. This occurs regardless if the ip udp-helper udp-port command contains port numbers 67/68 or not.

If you only configure the ip udp-helper udp-port command, all the UDP broadcast traffic is flooded, including ports 67/68 traffic if those ports are part of the udp-port-list.

Related Commands

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