D-Link DGS-3130 Emulator - Page 466
ip helper-address, ip forward-protocol
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DGS-3130 Layer 3 Stackable Managed Switch CLI Reference Guide Switch# traceroute 2001:238:f8a:77:7c10:41c0:6ddd:ecab
DGS-3130 Layer 3 Stackable Managed Switch CLI Reference Guide
462
Switch# traceroute 2001:238:f8a:77:7c10:41c0:6ddd:ecab
<10 ms
2001:238:f8a:77:7c10:41c0:6ddd:ecab
Trace complete.
Switch#
41-4
ip helper-address
This command is used to add a target address for the forwarding of UDP broadcast packets. Use the
no
form of
this command to remove a forwarding target address.
ip helper-address
IP-ADDRESS
no ip helper-address [
IP-ADDRESS
]]
Parameters
IP-ADDRESS
Specifies the target IP address for the forwarding of the UDP broadcast packet.
Default
None.
Command Mode
Interface Configuration Mode.
Command Default Level
Level: 12.
Usage Guideline
The command is available for VLAN interface configuration. Use this command to control the forwarding of UDP
broadcast packets. This command takes effect only when the received interface has an IP address assigned.
The system only forwards the packet that satisfies the following restriction.
The destination MAC address must be a broadcast address.
The destination IP address must be an all-one broadcast.
The packets are IPv4 UDP packets.
The IP TTL value must be greater than or equal to 2.
Example
This example shows how to configure the IP helper-address to 172.50.71.123 for VLAN 100.
Switch# configure terminal
Switch(config)#interface vlan 100
Switch(config-if)#ip helper-address
172.50.71.123
Switch(config-if)#
41-5
ip forward-protocol
This command is used to enable the forwarding of a specific UDP service type of packets. Use the
no
form of this
command to disable forwarding of a specific UDP service type of packets.