Users Guide
show ip udp-helper — displays the congured UDP helpers on all interfaces.
ip udp-helper udp-port
Enable the UDP broadcast feature on an interface either for all UDP ports or a specied list of UDP ports.
S4820T
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 (cong-if)
Command History
This guide is platform-specic. 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
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 ExaScale.
Usage Information
If you congure the ip helper-address command and ip udp-helper udp-port command, the
behavior is that the UDP broadcast trac with port numbers 67/68 is unicast relayed to the DHCP server
per the ip helper-address conguration. This occurs regardless if the ip udp-helper udp-port
command contains port numbers 67/68 or not.
If you only congure the ip udp-helper udp-port command, all the UDP broadcast trac is ooded,
including ports 67/68 trac if those ports are part of the udp-port-list.
Related Commands
ip helper-address — congures 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 congured UDP helpers on all interfaces.
Interfaces
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