The MPLS-OPS Archive[Date Prev][Date Next][Thread Prev][Thread Next] [Date Index][Thread Index][Author Index][Subject Index] RE: Reasons to deploy MPLS-TE
At 06:26 PM 5/6/2004 +0100, Stephen Mullaney wrote: >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. quite frankly I would avoid trying to specify numbers ... as with any restoration mechanism, the rerouting times is a function of many parameters including the network topology, number of IP prefixes, ... and of course the IGP parameter settings. Sub-second converge is achievable by means of IGP tuning indeed. JP. >-----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! 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