IP Broadcast Helper

In This Section:

IP Broadcast Helper is a form of static addressing that uses directed broadcasts to forward local and all-nets broadcasts to desired destinations within the internetwork. IP Broadcast Helper allows the relaying of broadcast UDP packets on a LAN as unicasts to one or more remote servers. This is useful when you relocate servers or hosts from their original common segment and still want the service to be available.

	Note - For more information, see RFC1542 section 4.

Configuring IP Broadcast Helper - Gaia Portal

To configure IP Broadcast Helper:

Open the Advanced Routing > IP Broadcast Helper page of the Portal.
Use the Forward Non-local Packets option to control whether to forward packets that are not locally originated by a source directly on the receiving interface.
In the Configure Relays section, click Add.
The Add Relay window opens.
Select the Interface to which you want to add support for IP helper services.
Add a UDP Port number to the helper services.
Add a Relay (server) IPv4 address for the UDP port.

Note - To enable IP Broadcast Helper in a cluster, do the configuration on each cluster member

Parameters

Parameter	Description
Forward Non-local Packets	Controls whether packets will be forwarded that are not locally originated by a source directly on the receiving interface. Enable to forward packets even if the source is not directly on the receiving interface. Clear the option to require that packets are generated by a source that is directly on the receiving interface to be eligible for relay. Default: Cleared.
Interface	The interface, on which the IP helper service runs. Default: None
UDP Port	The UDP service to be forwarded by the interface. Client UDP packets with the UDP port number are forwarded to the relay. Range: 0-65535. Default: None.
Relay	The IP address of the server defined for forwarding for the interface and UDP service. Default: None

Configuring IP Broadcast Helper - Gaia Clish (iphelper)

Forwarding Non-Local Packets

Use these commands to control whether to forward packets that are not locally originated by a source directly on the receiving interface:

set iphelper forward-nonlocal {on | off}

Parameters

Parameter	Description
`{on \| off}`	Select `on` to forward packets even if the source is not directly on the receiving interface. Select `off` to require that packets are generated by a source that is directly on the receiving interface to be eligible for relay. Default: off

Parameter

Description

{on | off}

Select on to forward packets even if the source is not directly on the receiving interface.

Select off to require that packets are generated by a source that is directly on the receiving interface to be eligible for relay.

Default: off

IP Broadcast Helper interfaces

Use these commands configure IP Broadcast Helper properties for specific interfaces:

set iphelper interface <if_name>

off

udp-port <1-65535>

off

relay-to ip_address {on | off}

Parameters

Parameter		Description

`interface <`if_name`> off`		Disable the interface configured for IP Broadcast Helper.
`udp-port <1-65535> off`		Disable the UDP services configured for this interface.
`udp-port <1-65535> relay-to ip_address {on \| off}`		The UDP service to be forwarded by the interface. Client UDP packets with the specified UDP port number are forwarded to the configured relay. The IP address of the server defined for forwarding for the interface and UDP service.
	Note - To enable IP Broadcast Helper in a cluster, do the configuration on each cluster member.

Monitoring IP Broadcast Helper

To monitor and troubleshoot IP Broadcast Helper in the Gaia Portal:

Click the Advanced Routing > IP Broadcast Helper page.
In the top right corner, click the Monitoring tab.

Note - The page is static. To see the latest values, click Reload.

To monitor and troubleshoot IP Broadcast Helper in Gaia Clish:

show iphelper

services

stats

IP Broadcast Helper commands summary

SET commands:

Note - Enter set iphelper [Esc][Esc].

set iphelper forward-nonlocal off

set iphelper forward-nonlocal on

set iphelper interface VALUE off

set iphelper interface VALUE udp-port VALUE off

set iphelper interface VALUE udp-port VALUE relay-to VALUE off

set iphelper interface VALUE udp-port VALUE relay-to VALUE on

SHOW commands:

Note - Enter show iphelper [Esc][Esc].

show iphelper services

show iphelper stats