[j-nsp] l2circuit or l2vpn

[Keegan.Holley at sungard.com]

I think I missed this in the original post and just mentioned the MPLS 
technologies.  I know at least the ERX series supports L2TP.  I have never 
done this on juniper equipment so I'm not much help in this respect.  If I 
had the choice I'd implement a simple MPLS configuration though since it 
will allow more advanced features such as traffic engineering and mapping 
the circuits over specific links through admin groups or SRO/RRO (RSVP). 
Also, l2circuit/l2vpn is not multipoint, that is the purpose of vpls..

HTH,

Keegan




From:
"Andrew Jimmy" <good1 at live.com>
To:
<Keegan.Holley at sungard.com>
Cc:
<juniper-nsp at puck.nether.net>
Date:
01/08/2009 01:19 PM
Subject:
RE: [j-nsp] l2circuit or l2vpn



Well, this means that you need to have MPLS switching in both case either 
l2ciruict or l2vpn. What if you want to use pseudo-wire services (like 
L2TPv3 (Cisco)) when you don?t have MPLS environment.
Second if l2vpn is multipoint than what?s the usage of VPLS. Is there any 
significant difference between l2vpn and VPLS. 
 
Can?t you have pseudo-wire circuit on traditional IP network ( just like 
cisco L2TPVv3).
 
 
 
 
From: Keegan.Holley at sungard.com [mailto:Keegan.Holley at sungard.com] 
Sent: Thursday, January 08, 2009 11:08 PM
To: Andrew Jimmy
Cc: juniper-nsp at puck.nether.net; juniper-nsp-bounces at puck.nether.net
Subject: Re: [j-nsp] l2circuit or l2vpn
 

The main differences are related to the Martini and Kompella method of 
implementing the technology. For example l2vpn is based on MBGP with RSVP 
doing the LSP signaling and advertising the labels.  This means that the 
path of the circuit is handled as if it were a virtual circuit because 
RSVP signals and reserves the bandwidth before traffic is passed. 
l2circuit is based on LDP which sends hellos end to end but depends on the 
IGP for resource reservations.  The data forwarding is technically the 
same and you can achieve the same results with either though.  Personally, 
I'm a fan of l2vpn the use of RSVP allows for more tidy configuration and 
bandwidth reservations.  I think l2vpn is a little easier to troubleshoot 
as well, however YMMV. 

Keegan 



From: 
"Andrew Jimmy" <good1 at live.com> 
To: 
<juniper-nsp at puck.nether.net> 
Date: 
01/08/2009 12:54 PM 
Subject: 
[j-nsp] l2circuit or l2vpn 
Sent by: 
juniper-nsp-bounces at puck.nether.net
 




What are the major differences between l2cirucit and l2vpn in terms of
Juniper JUNOS. Which is best in replacing Cisco L2TPv3 pseudo-wr.

_______________________________________________
juniper-nsp mailing list juniper-nsp at puck.nether.net
https://puck.nether.net/mailman/listinfo/juniper-nsp