The MPLS-OPS Archive

["Stephen Mullaney" <stephen.mullaney@parc-technologies.com>]

Correct me if I am wrong but fast-ISIS convergence will get you around 100-200ms, FRR will get you around 50ms.  Also FRR offers the opportunity to place backup tunnels relative to network capacity.  ie by using fancy algorithms (see Cisco TBPro as an example) you can protect bandwidth, not just convergence time.

-----Original Message-----
From: McCallum, Robert [mailto:robert.mccallum@thus.net]
Sent: 06 May 2004 17:39
To: 'Marinzulich, Matias'; 'Puddinhead Wilson '; ''Eric Osborne' ';
'Lavoisier J.L.Farias '; 'mpls-ops@mplsrc.com '
Subject: RE: [MPLS-OPS]: Reasons to deploy MPLS-TE 


You are indeed correct BUT you can get these times with ISIS or OSPF.  I
have been configuring this in our labs and I can get ISIS to wrap in under
10ms.

Robert McCallum 
CCIE #8757 R&S
01415663448
07818002241 

> -----Original Message-----
> From: Marinzulich, Matias [mailto:Matias.Marinzulich@comsat.com.ar] 
> Sent: 06 May 2004 16:54
> To: 'Puddinhead Wilson '; 'McCallum, Robert '; ''Eric 
> Osborne' '; 'Lavoisier J.L.Farias '; 'mpls-ops@mplsrc.com '
> Subject: RE: [MPLS-OPS]: Reasons to deploy MPLS-TE 
> 
> 
> Wilson, THE goal of FRR is that your traffic can be switched 
> to an alternative path so quickly (50ms or less). You can't 
> get these response times with BGP/LDP!
> 
> Matias.-
>   
> 
> 
> -----Original Message-----
> From: Puddinhead Wilson
> To: McCallum, Robert; 'Eric Osborne'; Lavoisier J.L.Farias; 
> mpls-ops@mplsrc.com
> Sent: 6/05/04 11:52 AM
> Subject: RE: [MPLS-OPS]: Reasons to deploy MPLS-TE 
> 
> hello,
>  
> If *FRR* is the biggest driver of TE, then that can be 
> achieved by using BGP as an LDP also :) (or using any other 
> LDP) as they would give us multiple LSPs to the same VPNv4 
> prefix :)?? Will they not?
>  
> 
> 
> "McCallum, Robert" <robert.mccallum@thus.net> wrote:
> 
> Of course Eric isnt in the slightest bit biased about TE :-)
> 
> Robert McCallum 
> CCIE #8757 R&S
> 01415663448
> 07818002241 
> 
> > -----Original Message-----
> > From: Eric Osborne [mailto:eosborne@cisco.com]
> > Sent: 03 May 2004 15:39
> > To: Lavoisier J.L.Farias; mpls-ops@mplsrc.com
> > Subject: Re: [MPLS-OPS]: Reasons to deploy MPLS-TE 
> > 
> > 
> > On Sat, 1 May 2004 17:47:16 -0300, Lavoisier J.L.Farias
> > wrote:
> > 
> > > Dear Sir,
> > >
> > > My name is Lavoisier Farias and I work in a Brazilian software
> > > company. I am also currently working in my thesis at the State 
> > > University of Campinas (UNICAMP). I have some basic questions 
> > > regarding MPLS. In Brazil, I do not know any service 
> > provider that is
> > > implementing MPLS-TE in their networks(*). Hopefully there
> > exist some
> > > one that I don't know yet. So, my questions are:
> > >
> > > - What are the reasons to the service providers around the world
> > > deploying MPLS-TE ? Is the lack of bandwidth the main 
> requirement ?
> > 
> > In my experience, fast reroute has been the biggest driver
> > for installing 
> > mpls-te in a network; there are certainly large networks out 
> > there using 
> > it for bandwidth optimization and stats collection, but FRR 
> > has been the 
> > most widely talked about.
> > 
> > > - Is there exist some network using MPLS-VPN (2547) and MPLS-TE at
> > > the same network ?
> > 
> > Yes
> > 
> > > And final question more related to my thesis subject:
> > > - Is the reoptmization feature available in Cisco Routers
> > really used
> > > into deployed MPLS-TE networks ! ?
> > 
> > Yes
> > 
> > 
> > 
> > eric
> > 
> > >
> > > Regards and Thanks,
> > >
> > > Lavoisier José Leite Farias.
> > > Network System Engineer.
> > > (*) There are Traffic Engineer in some networks but since
> > they have an
> > > existing ATM network.
> > >
> > >
> > > -------
> > > The MPLS-OPS Mailing List
> > > Subscribe/Unsubscribe: http://www.mplsrc.com/mplsops.shtml
> > > Archive: http://www.mplsrc.com/mpls-ops_archive.shtml
> > 
> > 
> > -------
> > The MPLS-OPS Mailing List
> > Subscribe/Unsubscribe: http://www.mplsrc.com/mplsops.shtml
> > Archive: http://www.mplsrc.com/mpls-ops_archive.shtml
> > 
> 
> -------
> The MPLS-OPS Mailing List
> Subscribe/Unsubscribe: http://www.mplsrc.com/mplsops.shtml
> Archive: http://www.mplsrc.com/mpls-ops_archive.shtml
> 
> 
>   _____  
> 
>  
<http://uk.rd.yahoo.com/mail/tagline_messenger/*http://uk.messenger.yaho
o.com> Yahoo! Messenger - Communicate instantly..."Ping" your friends today!
<http://uk.rd.yahoo.com/mail/tagline_messenger/*http://uk.messenger.yaho
o.com/download/index.html> Download Messenger Now

-------
The MPLS-OPS Mailing List
Subscribe/Unsubscribe:  http://www.mplsrc.com/mplsops.shtml
Archive: http://www.mplsrc.com/mpls-ops_archive.shtml


-------
The MPLS-OPS Mailing List
Subscribe/Unsubscribe:  http://www.mplsrc.com/mplsops.shtml
Archive: http://www.mplsrc.com/mpls-ops_archive.shtml