Dell Force10 S4810P, Reference Manual

Page: 833 / 1637

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.
E-Series, S4810
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
Version 8.3.7.0 Introduced on the S4810.
Pre-version
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 helper(s) on all interfaces.
show ip udp-helper
Display the configured UDP helper(s) on all interfaces.
E-Series, S4810
Syntax show ip udp-helper
Defaults none
Command Modes EXEC
Command History
Version 8.3.7.0 Introduced on the S4810.
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