The MPLS-OPS Archive[Date Prev][Date Next][Thread Prev][Thread Next] [Date Index][Thread Index][Author Index][Subject Index] R: R: Minimum Network Configuration to setup MPLS
I'm in agree with you, but i think that even if an MPLS with 2 PEs only will work, it's not a good lab to understand MPLS. I've read (in "somebody"'s book :-)) that MPLS does that: (without VPN's or anything else) packet from CE to PE PE push the label and switch the packet P switch the packet last P remove the label (penultimate hop popping) and pass the IP packet to PE PE route the packet to CE Without a P, i think that PE will push the label and then pop off the label as penultimate hop, than it pass the IP packet to the other PE and so on... (no LDP/TDP forwarding table will be made...) Is it wrong? Bye Federico Aita Network Specialist Dati Cisco Certified Network & Design Associate Albacom -----Messaggio originale----- Da: Roger Clark Williams [mailto:rogerw@nordlink.com] Inviato: venerd́ 25 ottobre 2002 14.27 A: MPLS-ops Mailing List Oggetto: Fwd: R: [MPLS-OPS]: Minimum Network Configuration to setup MPLS Federico, with all respect I would still say an MPLS network can be set up without a P router, using only 2 PE routers back to back. Granted, you will not get a good look at all the proper LDP labeling because each PE is the ultimate, not penultimate router. However, from a VPN point of view, all BGP sessions work, VPN labels are exchanged etc, IGP routing happens, etc I guess it depends on what you are trying to do, trying to see. Roger Williams . >Resent-Date: Fri, 25 Oct 2002 04:34:21 -0400 >X-Authentication-Warning: host.secure4-hosting.net: mplsrc12 set sender to >mpls-ops-request@mplsrc.com using -f >From: Aita Federico /Consulente <Federico.Aita@albacom.it> >To: "'mpls-ops@mplsrc.com'" <mpls-ops@mplsrc.com> >Subject: R: [MPLS-OPS]: Minimum Network Configuration to setup MPLS >Date: Fri, 25 Oct 2002 10:13:45 +0200 >X-Mailer: Internet Mail Service (5.5.2655.55) >Resent-From: mpls-ops@mplsrc.com >X-Mailing-List: <mpls-ops@mplsrc.com> archive/latest/4705 >X-Loop: mpls-ops@mplsrc.com >Resent-Sender: mpls-ops-request@mplsrc.com > >You have a problem: > >to implement the MPLS, you need at least a 3 router core: >2 PE-router >1 P-router > >+2 CE-router > >MPLS PE takes the incoming packet and push the label, >than, the last P does a "penultimate hop popping" by removing >the label and pass it to a PE-router as an IP packet. > >So with 2 PEs only you don't have an MPLS core... > >Cisco implement MPLS from 2600's family to 12000... > >Bye > >Federico Aita >Network Specialist Dati >Cisco Certified Network & Design Associate >Albacom > > >-----Messaggio originale----- >Da: champion boliao [mailto:mpls2000@mail.com] >Inviato: venerd́ 25 ottobre 2002 3.55 >A: mpls-ops@mplsrc.com >Oggetto: [MPLS-OPS]: Minimum Network Configuration to setup MPLS > > >Hi, > >I am struggling to understand more about MPLS network. I am currently trying >to setup a MPLS network in my lab. > >I have 4 routers, 2 Cisco 3600 series and 2 Cisco 7200 series. Am I able to >setup a MPLS system with these element by the following configuration ? > > > CE---PE---PE---CE > >Which routers should be treated as CE and which as PE? >Is this the minimum routers needed to setup a MPLS network? > >Please give me your advice to enlighten me. > >Thank you very much. >-- >__________________________________________________________ >Sign-up for your own FREE Personalized E-mail at Mail.com >http://www.mail.com/?sr=signup > >------- >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 ------- The MPLS-OPS Mailing List Subscribe/Unsubscribe: http://www.mplsrc.com/mplsops.shtml Archive: http://www.mplsrc.com/mpls-ops_archive.shtml |
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