cisco router configuration?

Networking/Security Forums -> Connectivity // Telecommunications // Internet News

Author: ursdestinyLocation: Pakistan PostPosted: Wed Mar 28, 2007 6:13 am    Post subject: cisco router configuration?
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Hi,
I have two networks connected through a router. I can ping both sides but now I have a software which needs to broadcast itself before it can work properly on the network. I am using OSPF (Shortest path first) as the routing protocol.

Thanks
AB

Author: Sgt_BLocation: Chicago, IL US PostPosted: Wed Mar 28, 2007 10:14 pm    Post subject:
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[Network A]------[Router]------[Network B]

Broadcasts on Network A will only be received by hosts on Network A. Broadcasts on Network B will only be received by hosts on Network B.

Cisco has a feature that will allow hosts on Network B to receive broadcasts from Network A. :gasp: Pure craziness! Wink

Its called IP Helper, and its necessary to do this stuff from time to time. Even though I think its just plain silly. Wink

Here's a link to the command reference entry for ip helper-address
For a more humorous explanation, just listen to Trinity Wink

Author: ursdestinyLocation: Pakistan PostPosted: Sat Mar 31, 2007 6:38 am    Post subject:
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Thanks for the help
But just for my knowledge:
Can i add entries in the routing table to configure the broadcast
Thanks
AB

Author: ursdestinyLocation: Pakistan PostPosted: Mon Apr 02, 2007 6:09 am    Post subject:
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can ip helper command be used for different ports?

Author: Sgt_BLocation: Chicago, IL US PostPosted: Mon Apr 02, 2007 5:19 pm    Post subject:
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ursdestiny wrote:
Thanks for the help
But just for my knowledge:
Can i add entries in the routing table to configure the broadcast
Thanks
AB
No, the routing table won't do anything for broadcasts. By their nature broadcasts do not normally traverse routers. As such, modification to the routing table won't do anything for you. Gotta stick with the ip helper-address command.

ursdestiny wrote:
can ip helper command be used for different ports?
Thats the job of the ip forward-protocol command. Its a global configuration that defines what services (ports) are forwarded. Use those two commands in order to forward the broadcast traffic you need. Smile



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