[c-nsp] Duplicate the packets

[Oliver Boehmer (oboehmer)]

  the packets
> 
> Yeah, i am receiving the UDP data on one IP address and i want to replicate
> this UDP data on 2 to 4 ip addresses. In this case the data will be received
> by 4 ip addresses simultaneously.

I still don't understand the application requirements. What is this? TV/Video? 

If you deal with UDP, I guess you have two options: 1) replicate in the application, or 2) use multicast to replicate in the network. I think these are your best choices. And accept and deal with packet losses. You will lose some. guaranteed.

	oli


> 
> Ambi
> On Fri, Mar 25, 2011 at 3:25 PM, Oliver Boehmer (oboehmer)
> <oboehmer at cisco.com> wrote:
> Can you elaborate on the application requirement at hand here? Not losing a
> single packet is virtually impossible in IP networks, you will always have
> failures/re-routing events, or also things like dropping packets while ARP
> adjacencies are resolved along the way, so I would argue that a potential
> initial set-up delay due to joining a group is the least concern.
> If you need guaranteed delivery, look at protocols like SCTP/Sigtran, along
> with diverse paths through the network.
> 
>        oli
> 
> From: Ambedkar Podeti [mailto:p.ambedkar at gmail.com]
> Sent: 25 March 2011 10:40
> To: Oliver Boehmer (oboehmer)
> Cc: cisco-nsp at puck.nether.net
> Subject: Re: [c-nsp] Duplicate the packets
> 
> Multicast takes time when it goes out of GROUP and joining GROUP. i dont
> want to lose even a single packet.
> On Fri, Mar 25, 2011 at 3:04 PM, Oliver Boehmer (oboehmer)
> <oboehmer at cisco.com> wrote:
> 
> >
> > Yeah broadcast is still a single packet but i dont want to send the
> same
> > packet to whole VLAN or all hosts in that LAN. Can i define the
> particular
> > IP addresses to which the data has to go ??
> hmm, multicast comes to mind?
> 
>        oli