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ManualsBrandsHP ManualsNetwork HardwareHP 5412R zl2 Switch

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11 User Datagram Protocol

For introductory information about user datagram protocol (UDP), see “UDP broadcast forwarding”

(page 249).

Configuring and enabling UDP broadcast forwarding

To configure and enable UDP broadcast forwarding on the switch:

1. Enable routing.

2. Globally enable UDP broadcast forwarding.

3. On a per-VLAN basis, configure a forwarding address and UDP port type for each type of

incoming UDP broadcast you want routed to other VLANs.

Globally enabling UDP broadcast forwarding

Syntax:

[no] ip udp-bcast-forward

Enables or disables UDP broadcast forwarding on the routing switch. Routing must

be enabled before executing this command.

Using the no form of this command disables any ip forward protocol udp

commands configured in VLANs on the switch.

Default: Disabled

Configuring UDP broadcast forwarding on individual VLANs

This command routes an inbound UDP broadcast packet received from a client on the VLAN to the

unicast or broadcast address configured for the UDP port type.

Syntax:

[no] ip forward-protocol udp ip-address [ port-number |

port-name ]

Used in a VLAN context to configure or remove a server or broadcast address and

its associated UDP port number. You can configure a maximum of 16

forward-protocol udp assignments in a given VLAN. The switch allows a total

of 256 forward-protocol udp assignments across all VLANs.

You can configure UDP broadcast forwarding addresses regardless of whether UDP

broadcast forwarding is globally enabled on the switch. However, the feature does

not operate unless globally enabled.

This can be either of the following:ip-address

• The unicast address of a destination server on another subnet. For example:

15.75.10.43.

• The broadcast address of the subnet on which a destination server operates. For

example, the following address directs broadcasts to All hosts in the 15.75.11.0

subnet: 15.75.11.255.

NOTE: The subnet mask for a forwarded UDP packet is the same as the subnet

mask for the VLAN (or subnet on a multinetted VLAN) on which the UDP broadcast

packet was received from a client.

Any UDP port number corresponding to a UDP application supported on a device at

the specified unicast address or in the subnet at the specified broadcast address. For

udp-port-#

246 User Datagram Protocol