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ip helper-address require directed-broadcasts enabled on intermediate ints?

Greetings and thanks in advance! Scenario:

client 1 behind e0 on router 1 wants to get an ip from server 2 behind e0 router 2.

Router 1 and 2 are connected serial ints via frame.

helper address is configured on router 1 e0 and points to server 2. ip forwarding of bootps and pc enabled.

What interfaces on router 1 and router 2 must directed-broadcasts be enabled? router1 serial and router 2 e0? or more or none?

Thanks,

art

1 REPLY
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Re: ip helper-address require directed-broadcasts enabled on int

hi art

you do not need the ip directed-broadcast on the interface.

with the helper on the e0 of router 1 the broadcast will be changed into a unicast and can be forwarded

to the server which will handle the request.

Here a link to the config guide:

http://www.cisco.com/univercd/cc/td/doc/product/software/ios121/121cgcr/ip_c/ipcprt1/1cdipadr.htm#1002098

Hope that helps

Roger

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