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Posted by Martin Leduc on September 23, 2007, 7:29 am
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You're right and I check on Cisco FAQ and Help the ip forward-protocol
command.
After that I read severals PPPoE documentation:
http://www.javvin.com/protocolPPPoE.html
http://www.javvin.com/protocol/rfc2516.pdf
and the RFC
http://www.ietf.org/rfc/rfc2516.txt
I read on the page #2 in the RFC that the Ether_Type for the discovery stage
is 0x8863 and the PPP session stage is 0x8864.
Nowhere they talk about the UDP Protocol and the PPPoE Broadcast.
I'm confuse
So I had try with ip forward-protocol any-local-broadcast, doesn't work.
I had enable the debug on the udp query, I dont see anything
I had enable the debug on all the query, very big mess to check
I'm sure that all ISP using the PPPoE user control use a complete routed
network behind the PPPoE users sessions.
Otherwise, it's doesn't make sens.
Can you help me please?
Regards
Martin
46f5bcb8$0$18304$afc38c87@news.optusnet.com.au...
>
>> Hi
>>
>> I had pass the 4 CCNA curriculum sessions successfully and i'm not able
>> to
>> do something I think is basic.
>>
>> I have to forward PPPoE Broadcast packets to my PPPoE server at 10.0.0.2
>> over my Cisco router.
>>
>> I use the Cisco 851-K9 router and read on Cisco session 4 that the ip
>> helper-address command forward the Broadcast packets to Unicast IP
>> address.
>>
>> So I've put in the int Vlan1 the command
>>
>> ip helper-address 10.0.0.2
>>
>> and that doesn't work.
>>
>> I see something about the ip forward-protocol command but I think I
>> missed
>> something.
>>
>> If someone can help me, It's will be appreciated.
>>
>> Best Regards
>>
>> Martin
>>
>>
> If a helper address is specified and UDP forwarding is enabled, broadcast
> packets destined to the following port numbers are forwarded by default:
>
> .Trivial File Transfer Protocol (TFTP) (port 69)
>
> .Domain Naming System (port 53)
>
> .Time service (port 37)
>
> .NetBIOS Name Server (port 137)
>
> .NetBIOS Datagram Server (port 138)
>
> .Boot Protocol (BOOTP) client and server packets (ports 67 and 68)
>
> .TACACS service (port 49)
>
> .IEN-116 Name Service (port 42)
>
>
> Combined with the ip forward-protocol global configuration command, the ip
> helper-address command allows you to control which broadcast packets and
> which protocols are forwarded.
>
>
>
>>
>
>
>
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