Reference Guide

Command
History
This guide is platform-specific. For command information about other platforms, refer to the relevant Dell
Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
Version Description
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.
8.3.7.0 Introduced on the E-Series ExaScale.
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
ip helper-address — configures the destination broadcast or host address for the DHCP server.
debug ip udp-helper — enables debug and displays the debug information on a console.
show ip udp-helper — displays the configured UDP helpers on all interfaces.
show ip udp-helper
Display the configured UDP helpers on all interfaces.
Z9500
Syntax
show ip udp-helper
Defaults none
Command Modes EXEC
Command
History
This guide is platform-specific. For command information about other platforms, refer to the relevant Dell
Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
Version Description
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.
8.3.7.0 Introduced on the E-Series ExaScale.
Example
Dell#show ip udp-helper
--------------------------------------------------
Port UDP port list
--------------------------------------------------
Te 1/0 656, 658
Te 1/1 All
682 Interfaces