Service Manual

ip udp-helper udp-port
Enable the UDP broadcast feature on an interface either for all UDP ports or a specied 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 (cong-if)
Command History
This guide is platform-specic. For command information about other platforms, see the relevant Dell 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 congure the ip helper-address command and ip udp-helper udp-port command, the
behavior is that the UDP broadcast trac with port numbers 67/68 is unicast relayed to the DHCP server per the
ip helper-address conguration. This occurs regardless if the ip udp-helper udp-port command
contains port numbers 67/68 or not.
If you only congure the ip udp-helper udp-port command, all the UDP broadcast trac is ooded,
including ports 67/68 trac if those ports are part of the udp-port-list.
Related Commands
• ip helper-address — congure the destination broadcast or host address for the DHCP server.
• debug ip udp-helper — enable debug and displays the debug information on a console.
• show ip udp-helper — display the congured UDP helpers on all interfaces.
show ip udp-helper
Display the congured UDP helpers on all interfaces.
Syntax
show ip udp-helper
754 Interfaces