C
HAPTER
19
| IP Services
Forwarding UDP Service Requests
– 478 –
FORWARDING UDP SERVICE REQUESTS
This section describes how this switch can forward UDP broadcast packets
originating from host applications to another part of the network when an
local application server is not available.
COMMAND USAGE
â—† Network hosts occasionally use UDP broadcasts to determine
information such as address configuration, and domain name mapping.
These broadcasts are confined to the local subnet, either as an all hosts
broadcast (all ones broadcast - 255.255.255.255), or a directed subnet
broadcast (such as 10.10.10.255). To reduce the number of application
servers deployed in a multi-segment network, UDP helper can be used
to forward broadcast packets for specified UDP application ports to
remote servers located in another network segment.
â—† To configure UDP helper, enable it globally (see "Configuring General
DNS Service Parameters" on page 463), specify the UDP destination
ports for which broadcast traffic will be forwarded (see "Specifying UDP
Destination Ports" on page 479), and specify the remote application
servers or the subnet where the servers are located (see "Specifying
The Target Server or Subnet" on page 480).
ENABLING THE UDP
HELPER
Use the IP Service > UDP Helper > General page to enable the UDP helper
globally on the switch.
CLI REFERENCES
â—† "ip helper" on page 1016
PARAMETERS
These parameters are displayed in the web interface:
◆ UDP Helper Status – Enables or disables the UDP helper.
(Default: Disabled)
WEB INTERFACE
To enable the UDP help:
1. Click IP Service, UDP Helper, General.
2. Mark the Enabled check box.
3. Click Apply.
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