ip forward-protocol udp

Description

Defines the UDP server to which the interface forwards ingress UDP broadcast packets received on a specific UDP port. A maximum of 8 UDP broadcast servers can be configured per interface.

The no form of this command removes traffic forwarding for the specified server and port/protocol.

Command context

config-if

Parameters

<IPV4-ADDR>

Specifies the UDP server IP address in IPv4 format (x.x.x.x), where x is a decimal number from 0 to 255..

<PORT-NUM>

Specifies the UDP port number for which traffic is forwarded.

<PROTOCOL>

Specifies the protocol name for which traffic is forwarded. Supported protocols and their port numbers are:

• dns (53): Domain Name Service
• ntp (123): Network Time Protocol
• netbios-ns (137): NetBIOS Name Service
• netbios-dgm (138): NetBIOS Datagram Service
• radius (1812): Remote Authentication Dial-In User Service
• radius-old (1645): Remote Authentication Dial-In User Service
• rip (520): Routing Information Protocol
• snmp (161): Simple Network Management Protocol
• snmp-trap (162): Simple Network Management Protocol
• tftp (69): Trivial File Transfer Protocol
• timep (37): Time Protocol

Authority

Administrators or local user group members with execution rights for this command.

Examples

On the 6400 Switch Series, interface identification differs.

Forwarding DNS traffic to server 192.168.1.10 on interface 1/1/1:

switch(config)# interface 1/1/1
switch(config-if)# ip udp-bcast-forward protocol udp 192.168.1.10 dns

Forwarding DNS traffic (port 53) to server 192.168.1.10 on interface 1/1/1:

switch(config)# interface 1/1/1
switch(config-if)# ip udp-bcast-forward protocol udp 192.168.1.10 53