Re: broadcast question

You were giving away points too easily :) Go for a reread !

Scott Morris @ 2/03/2010 17:29 -0300 dixit:
> Now, perhaps I'm over thinking this (and Ive already deleted the
> original, so can't go back to look at what it was asking for)....
>
> Helper address:
>
> 1 incoming --> 4 separate helper addresses to local broadcast on 4
> separate networks.
>
> Broadcast-multicast conversion:
>
> 1 incoming --> 1 multicast stream/address that happens to go OUT 4
> separate interfaces
>
> Unless we get into the nuances of joins or not, and assuming that I WANT
> the traffic to go out all four interfaces, is the end result not going
> to be the same either way? One incoming packet = sent out four separate
> interfaces.
>
> *shrug* I'll let you all tell me where I misread the part about
> conserving bandwidth versus everyone on four /26 subnets must get it.
>
> Scott
>
> Carlos G Mendioroz wrote:
>> Hmm,
>> if he puts 4 helpers on the wan if, then only one wan packet on the wan
>> will replicate 4 lan broadcasts. I thought the point is conserving wan
>> bw. What am I missing ?
>>
>> On the other side, mcast helper is right on target, if you want to enter
>> mcast world :)
>>
>> -Carlos
>>
>> Marko Milivojevic @ 2/03/2010 16:03 -0300 dixit:
>>
>>> On Tue, Mar 2, 2010 at 18:56, Scott Morris <smorris_at_ine.com> wrote:
>>>
>>>> B ip helper-address and ip forward-protocol to change the port information
>>>> used? B Just have multiple helpers on the receiving interface. B (Tell 'em
>>>> to use the broadcast of the receiving interface)
>>>>
>>> This would work, but it would fail to concerve bandwidth, as traffic
>>> would be replicated N times - once for each helper address... No
>>> points for you ;-)
>>>
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>>
>>

-- 
Carlos G Mendioroz  <tron_at_huapi.ba.ar>  LW7 EQI  Argentina
Blogs and organic groups at http://www.ccie.net