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Community Member

C2600 configuring UDP

Hello,

We have a simple network (1 PC each side of the router), and we would like to have the brodcast of upd 5900 of network 1 reach network 2.

This sounds pretty easy but none of us is very familiar with routers.

1 ACCEPTED SOLUTION

Accepted Solutions
Community Member

Re: C2600 configuring UDP

hi

PC1-(Router1)---ser_lnk---(Router2)->PC2

Let us say that your router1 connects to PC1 and call it network 1

Router2 connects to PC2 and it is network 2.

And the requirement is to connect PC1 UDP/5900 broadcasts to reach a server on network two.

1>On router 1's fa0 interface, use the ip helper-address command.

2>On the router R1, specify that it should relay the udp broadcasts on udp 5900.

commands -

config terminal

R1(config)#inter fastethernet0

R1(config-if)#ip helper-address a.b.c.d

R1(config-if)#exit

R1(config)#ip forward-protocol udp 5900

R1#exit

R1#write

Note - a.b.c.d - the server on network 2 that is supposed to receive the udp/5900 broadcasts.

You can also set the destination to a.b.c.255 assuming that you want it to end up as a directed broadcast on the destination network again.

HTH

Please try and let me know.

cheers

3 REPLIES

Re: C2600 configuring UDP

Hi,

what do you call "broadcast of UDP 5900"?

Are you trying to get VNC to work? Then it should be unicast traffic. Setting the PCs default gateway to the respective routers interface address should allow already communication.

Hope this helps

Martin

P.S.: in case this doesn´t help, can you give a little more info and maybe even post the router config?

Community Member

Re: C2600 configuring UDP

hi

PC1-(Router1)---ser_lnk---(Router2)->PC2

Let us say that your router1 connects to PC1 and call it network 1

Router2 connects to PC2 and it is network 2.

And the requirement is to connect PC1 UDP/5900 broadcasts to reach a server on network two.

1>On router 1's fa0 interface, use the ip helper-address command.

2>On the router R1, specify that it should relay the udp broadcasts on udp 5900.

commands -

config terminal

R1(config)#inter fastethernet0

R1(config-if)#ip helper-address a.b.c.d

R1(config-if)#exit

R1(config)#ip forward-protocol udp 5900

R1#exit

R1#write

Note - a.b.c.d - the server on network 2 that is supposed to receive the udp/5900 broadcasts.

You can also set the destination to a.b.c.255 assuming that you want it to end up as a directed broadcast on the destination network again.

HTH

Please try and let me know.

cheers

Community Member

Re: C2600 configuring UDP

I just tried it and it worked straight on.

Thank you very much

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