[j-nsp] tunneling on MX

[Marlon Duksa]

Thanks Sean! Please see in-line:

> Don't do it on the RE, unless you want problems.
Marlon: But would this be an option if I wanted to? It seems to me that this
is not even an option.

I also remember running VPLS without it (no-tunneling-service command). Why
> do I need this tunneling mode  than on MX?
>
>
>
You don't - you can also run in no-tunnel mode

Marlon: That's exactly my point. Why don't I need it? What benefit do I get
if I use it vs not? If I don't need it for VPLS, then maybe I don't need it
for bunch of other stuff? Where is the delineation?
Thanks again.
Marlon




On Thu, Oct 30, 2008 at 11:17 AM, Sean Clarke <sean at clarke-3.demon.nl>wrote:

> Marlon Duksa wrote:
>
>> I remember running mcast traffic on MX without converting a port to a
>> 'tunneling' module.
>>
> Only if you are running native multicast as a receiver.
> Or your DR is connected directly to the RP
> Or you're running PIM-SSM
>
> If the DR and RP are different then you need tunnel  to encapsulate.
> I don't know your topology so can't comment.
>
> However if you need to encapsulate/decapsulate PIM messages you MUST have a
> port in tunnel mode
>
>  Why is Juniper saying that for multicast tunnels (mt),
>> this tunneling service on a port is necessary?
>>
>>
>
> Yes this is more for draft-rosen ... any rosen / or NG-multicast solution
> needs either mt- or vt- interfaces, which needs tunneling hardware.
> This is not native multicast any more
>
>  I also remember running VPLS without it (no-tunneling-service command).
>> Why
>> do I need this tunneling mode  than on MX?
>>
>>
>>
> You don't - you can also run in no-tunnel mode
>
>  I guess the tunneling service provide acceleration, but does that mean
>> that
>> it should work even without it, just that performance will be lower?
>>
>> Also, on M-series, why do you have to have MS-PIC? Can all the tunneling
>> and
>> processing be done on the control plane CPU? The performance would suffer
>> I
>> understand, but in some cases we don't have a lot of traffic in tunnels.
>>
>>
>>
> MS-PIC, AS-PIC, tunnel PIC... any tunneling and you'll need one of them .
> MS-PIC scales better than AS-PIC - which scales better than tunnel PIC
>
> Don't do it on the RE, unless you want problems.
> cheers
>
>  Thanks,
>> Marlon
>> _______________________________________________
>> juniper-nsp mailing list juniper-nsp at puck.nether.net
>> https://puck.nether.net/mailman/listinfo/juniper-nsp
>>
>>
>>
>>
>
>