Specifications

PowerConnect 6024/6024F Release Notes
Release Notes | Page 11
RN-CA-CLIRG-20. CLI command
“ip helper-address”
The “ip helper-address” command is missing from the CLI Reference Guide.
ip helper-address
Use the Global Configuration ip helper-address command to have the device
forward User Datagram Protocol (UDP) broadcasts received on an interface.
To disable the forwarding of broadcast packets to specific addresses, use the
no form of this command.
ip helper-address ip-interface address [udp-port-list]
no ip helper-address ip-interface address
Syntax Description
ip-interface Specify IP interface or all.
address Destination broadcast or host address to be used when
forwarding UDP broadcasts. You can specify 0.0.0.0 to
indicate not to forward the UDP packet to any host.
udp-port-list The broadcast packet destination UDP port number to
forward. If not specified, packets for the default services
are forwarded to the helper address.
Default
Disabled
Command Mode
Global Configuration
Usage Guidelines
The ip helper-address command forwards specific UDP broadcast from one
interface to another. You can define many helper addresses but the total
number of address-port pairs is limited to 128 for the whole device.
The setting of helper address for specific interface has precedence over a
setting of helper address for all the interfaces.
You can't enable forwarding of BOOTP/DHCP (ports 67,68) with this
command. If you want to relay BOOTP/DHCP packets use the DHCP relay
commands.
The ip helper-address command specifies a UDP port number for which UDP
broadcast packets with that destination port number are forwarded. By default,
if no UDP port number is specified, the device forwards UDP broadcast
packets for the following six services:
IEN-116 Name Service (port 42)
DNS (port 53)
NetBIOS Name Server (port 137)
NetBIOS Datagram Server (port 138)
TACACS Server (port 49)
Time Service (port 37)
Example
Console(config)# ip helper address 100.10.1.1