Dell PowerConnect PC5524

IP Addressing Commands 613
FILE LOCATION: C:\Users\gina\Desktop\Checkout_new\CLI Folders\Dell Contax
CLI\files\IP_Addressing.fm
DELL CONFIDENTIAL – PRELIMINARY 5/15/12 - FOR PROOF ONLY
Syntax
ip helper-address { ip-interface | all} address [ udp-port-list ]
no ip helper-address {
ip-interface | all} address
Parameters
• ip-interface —Specifies the IP interface.
•
all —Specifies all IP interfaces.
•
address —Specifies the destination broadcast or host address to which to
forward UDP broadcast packets. A value of 0.0.0.0 specifies that UDP
broadcast packets are not forwarded to any host.
•
udp-port-list —Specifies the destination UDP port number to which to
forward broadcast packets. (Range: 1–65535)
Default Configuration
Forwarding of User Datagram Protocol (UDP) broadcast packets received on
an interface to a specific (helper) address is disabled.
If udp-port-list is not specified, packets for the default services are forwarded
to the helper address.
Command Mode
Global Configuration mode
User Guidelines
The ip helper-address command forwards specific UDP broadcast packets
from one interface to another.
Many helper addresses may be defined. However, the total number of address-
port pairs is limited to 128 for the device.
The setting of a helper address for a specific interface has precedence over the
setting of a helper address for all the interfaces.
Forwarding of BOOTP/DHCP (ports 67, 68) cannot be enabled with this
command. Use the DHCP relay commands to relay BOOTP/DHCP packets.
The ip helper-address command specifies a UDP port number to which UDP
broadcast packets with that destination port number are forwarded. By