From: Hansang Bae (hbae@xxxxxxxxxx)
Date: Wed Apr 24 2002 - 21:18:51 GMT-3
At 11:03 AM 4/24/2002 +0100, Shaun Wakelen wrote:
>Can anybody clarify whether this will work.
>
>A UDP broadcast to a network broadcast address (192.168.10.255) to be
>received by clients on 192.168.20.0/24.
>
>Now from what I believe, if it is sent to the all networks broadcast
>(255.255.255.255), then the use of the ip helper-address command will
>forward it to the relevant clients vlan. However, as it is being sent to the
>network broadcast address, it will not. Or should it?
>
>We thought we had this working on a test-bed, but when we tried to implement
>it live, it did not work.
>
>This is running on a 6509 with an msfc2 (msfc IOS is 12.1.8a)
>
>Also, does anybody know of a piece of software that will generate UDP
>packets to a specified address and using a specified port? It would be very
>handy for testing in this scenario.
http://www.cisco.com/univercd/cc/td/doc/cisintwk/ics/cs006.htm
For info on UDP flooding.
You can use TTCP (Test TCP) to send UDP packets to any port you want. The rout
er based TTCP can only do TCP - IIRC, but the PC/Unix based ones can use UDP.
hsb
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