Brocade BigIron RX Series Configuration Guide - Manual (Page 297)

BigIron RX Series Configuration Guide 219
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Configuring forwarding parameters
7
Enabling forwarding for a UDP application
If you want the device to forward client requests for UDP applications that the device does not
forward by default, you can enable forwarding support for the port. To enable forwarding support
for a UDP application, use either of the following methods. You also can disable forwarding for an
application using these methods.
NOTE
You also must configure a helper address on the interface that is connected to the clients for the
application. The device cannot forward the requests unless you configure the helper address. Refer
to
“Configuring an IP helper address” on page 221.
To enable the forwarding of SNMP trap broadcasts, enter the following command.
BigIron RX(config)# ip forward-protocol udp echo
Syntax: [no] ip forward-protocol udp <udp-port-name> | <udp-port-num>
The <udp-port-name> parameter can have one of the following values. For reference, the
corresponding port numbers from RFC 1340 are shown in parentheses. If you specify an
application name, enter the name only, not the parentheses or the port number shown here:
• bootpc (port 68)
• bootps (port 67)
• discard (port 9)
• dns (port 53)
• dnsix (port 90)
• echo (port 7)
• mobile-ip (port 434)
• netbios-dgm (port 138)
• netbios-ns (port 137)
• ntp (port 123)
• tacacs (port 65)
• talk (port 517)
• time (port 37)
• tftp (port 69)
In addition, you can specify any UDP application by using the application’s UDP port number.
The <udp-port-num> parameter specifies the UDP application port number. If the application you
want to enable is not listed above, enter the application port number. You also can list the port
number for any of the applications listed above.
To disable forwarding for an application, enter a command such as the following.
BigIron RX(config)# no ip forward-protocol udp 161
Syntax: [no] ip forward-protocol udp <udp-port-num>
This command disables forwarding of SNMP requests to the helper addresses configured on device
interfaces.