[j-nsp] Stiching L2 to L3 on MX480

[adamv0025 at netconsultings.com]

Hi Pshem,

The feature designed specifically for what you are looking for is pseudowire
headend (or pseudowire headed termination PWHT on junos). I'm just really
surprised no one mentioned it already.
The limit is 2048 in 15.1 and should be raised to around 15k on 17.1. 
But as always you should do a fair amount of scaling and performance testing
to see if it's suitable for your product scale and BW requirements.

I feel your pain when I was designing Carrier Ethernet  solution several
years ago when there was no PWHE available had to use two routers at the
head-end one to terminate PW into qinq and other with L3 to VRF.
The only other option was bridge-domain per PW which obviously does not
scale (well not at scales I needed anyways).

adam 

netconsultings.com
::carrier-class solutions for the telecommunications industry::

> -----Original Message-----
> From: juniper-nsp [mailto:juniper-nsp-bounces at puck.nether.net] On Behalf
> Of Pshem Kowalczyk
> Sent: Tuesday, December 19, 2017 10:07 PM
> To: juniper-nsp at puck.nether.net
> Subject: [j-nsp] Stiching L2 to L3 on MX480
> 
> Hi,
> 
> We have an existing setup consisting of a number of ACX5k and MX480
> (single MPLS domain). We generally provide L2 services out of the ACXes
and
> L3 out of the MXes. Now, a new requirement emerged to provide L3 (with
> features that ACX can't provide) in locations where we can't justify the
MX.
> I'd like to know if it's possible to do the following (and if anything
special is
> required on the MX) 1. Build a L2 PWE3 taking whole port on the ACX and
> logically terminate it on the MX 2. The logical port on the MX (I presume
'lt')
> will be used to terminate individual dot1q and QinQ services into L3 VPNs.
> 
> Looking at the documentation it appears to be possible, but I'd like to
know
> what sort of limitations this solution might have, particularly when it
comes to
> QoS on the MX.
> 
> kind regards
> Pshem
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