Broadcasting Packets

[cartiq]

How can I broadcast a packet in such a way that it can cross the routers?

[Georg Pauwen]

Hello,

if you are talking about UDP broadcasts (including BOOTP), you can use the command:

ip helper-address

in interface configuration mode. Let's say you want UDP broadcasts received on interface Ethernet0 to be forwarded to IP address 192.168.16.1, your configuration would look like this:

interface Ethernet0

ip helper-address 192.168.16.1

If you have a CCO login, check this link for the syntax of this command:

http://www.cisco.com/en/US/products/sw/iosswrel/ps5207/products_command_reference_chapter09186a00801a7ea5.html#1091304

HTH,

GP

[aretana]

Besides the helper-address case, the only other way you can get a broadcast packet to go through the router is if it is a directed broadcast packet (for a remote subnet). ;-)

Alvaro.