Service Manual
Version Description
8.3.19.0 Introduced on the S4820T.
8.3.7.0 Introduced on the S4810.
Pre-version 8.3.7.0 Introduced on the E-Series ExaScale.
Usage Information When a UDP broadcast packet is ooded out of an interface, and the outgoing interface is congured using
this command, the outgoing packet’s IP destination address is replaced with the congured broadcast
address.
Related Commands
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.
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.
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
9.8(0.0) Introduced on the S3048-ON and S4048-ON.
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.
Interfaces
673