The MPLS-OPS Archive

["faustoleuci@virgilio.it" <faustoleuci@virgilio.it>]

Hi to everybody.
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Show me it please...thanks

----Messaggio originale----
Da: daniel.king@aria-networks.com
Data: 28-giu-2007 17.59
A: "Lavoisier 
Farias"<lavoisier@gmail.com>
Cc: <mpls-ops@mplsrc.com>
Ogg: RE: [MPLS-
OPS]: Feature Make-Before-Break and MPLS Traffic Engineer

Hello 
Lavoisier,

 

As you may know make-before-break is a function to 
reroute or optimize
an LSP. The goal is to achieve a new optimal route 
for the existing LSP.
The router head-end needs to compute a path, 
signal the new route, share
traffic with the existing LSP, switch 
traffic onto the new LSP and
remove the existing route. I'd suggestion 
reading the IETF MPLS-TE Soft
Preemption draft for further 
information:    

 

http://tools.ietf.org/html/draft-ietf-mpls-soft-
preemption-08

 

There are some large carriers in North American and 
Japan that are using
MPLS-TE fairly extensively. If you look at the 
IETF MPLS Working Group
you will notice a number of engineers from 
various carriers around the
world who are involved with developing MPLS-
TE solutions. There are also
a number of carriers deploying Point-to-
Multipoint (P2MP) MPLS-TE to
carry video services. In fact P2MP MPLS-TE 
poses some significant path
computation problems that will require the 
development of new
algorithms.  

 

Best regards,

Dan

 

 

From: 
Lavoisier Farias [mailto:lavoisier@gmail.com] 
Sent: 24 June 2007 15:58
To: mpls-ops@mplsrc.com
Subject: [MPLS-OPS]: Feature Make-Before-Break 
and MPLS Traffic Engineer

 

Hi Everyone,

I am working on the issue 
of algorithms for traffic engineering at MPLS
networks and I have the 
following questions:

*	One question that I read but still not clear to 
me is how it
works the feature "Make-Before-Break" on LSP Tunnels. 
*	I 
very long time ago I asked in the IETF list if MPLS Traffic
Engineer is 
deployed at Carriers in large scale around the world.

Any light to 
this questions I would appreciate.

Thank you in advance, 
Lavoisier 
Farias.




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