[j-nsp] L2 VPN question

[Laura Serrano]

Hi Martin,

this is Laura, from rediris. As Miguel Angel tells you, we want to use the same 
link between CE and PE router for the IP and l2 circuit traffic.

Please, correct me if I am wrong.

For definition, we need to configure an CCC circuit between CE and PE router, 
don't we?. Well, we are currently defining a test VPN scenario in our production 
network without affecting to the IP traffic, that is: to use the same SONET link 
(PE-CE) to IP and l2circuit traffic.

I am trying to configure different units under the same physical interface, but 
we have a problem:

At the physical level we can configure framerelay-ccc, ciscohdlc-ccc and 
ppp-ccc, but if you choose any of *.ccc encapsulations at this level, you can't 
configure family inet in the logical unit interface.

Another possibility, I thought about, is to configure "frame-relay" at the 
physical level and define two different logical unit, one for IP traffic and 
frame-relay encapsulation and other for l2circuit with frame-relay-ccc 
encapsulation, but it is impossible too :-/

Any comment, any idea, any options? Thanks in advanced

Regards!

-- Laura



Martin Mogensen wrote:
> Miguel Angel Sotos wrote:
> 
>> Hi all,     we are configuring some L2VPN stuff in Juniper routers.
>>
>> There's a POS interface between PE end CE.
>> Can we use (we are using Martini) in the same POS interface, *-ccc 
>> encapsulation and other type of encapsulations that permits
>> familiy inet ??
>> In that case, which one?
>>
>> Or, have I to use the whole interface for ccc based VPNs??
>> (and not IP traffic)??
>>
>> At the end, what i want to do is to use
>> at the same time L2 circuits and L3 family inet traffic in the same 
>> interface.
>>
>> Is it possible? or maybe i'm conceptually wrong.....
> 
> 
> We have deployed this type of Martini layer 2 circuits with both IP and 
> layer2 circuit terminations on the same physical interface towards a CE, 
> but we have only used GE/10GE interfaces and vlan-ccc encapsulation so 
> far. Using POS interfaces is more tricky.
> 
> In order to run both IP traffic and to terminate one or more layer2 
> circuit on the same physical interface you need to use an encapsulation 
> type that support the use of more than one unit (subinterface) on the 
> physical interface. You can then use one unit for IP and one or more to 
> units for CCC to enable layer2 circuit terminations towards the CE.
> 
> Note that there are limitations on which unit numbers you can use with 
> CCC - some units will be reserved when you apply *-ccc encapsulatiom on 
> the physical interface:
> http://www.juniper.net/techpubs/software/junos/junos61/feature-guide-61/html/fg-l2circuit6.html 
> 
> 
> For POS, you should be able to use frame-relay-ccc encapsulation to 
> acheive what you need if you would like to go that way.
> /martin
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