The MPLS-OPS Archive[Date Prev][Date Next][Thread Prev][Thread Next] [Date Index][Thread Index][Author Index][Subject Index] Fwd: Local significance of labels?
Since labels are locally significant, they can be reused. Router A can use label 6 as a marker for Destination X, Router B can use Label 6 for Destination Y (assuming the two routers are not directly connected neighbors). Secondly, a label for a destination via Router A can be sent out by Router A to all neighbors, one label for all. Certain platforms cannot allocate any number of labels but are limited, so saving on the number of distributed labels makes sense. Just some reasons I can think of right now. Roger Williams >X-MindSpring-Loop: rogerw@nordlink.com >Resent-Date: Fri, 25 Jul 2003 10:45:25 -0400 >X-Authentication-Warning: host.secure4-hosting.net: mplsrc12 set sender to >mpls-ops-request@mplsrc.com using -f >X-Sender: yvy7807@mail.earthlink.net >X-Mailer: QUALCOMM Windows Eudora Version 5.1 >Date: Fri, 25 Jul 2003 10:35:48 -0400 >To: mpls-ops@mplsrc.com >From: dfsd <yvy7807@earthlink.net> >Subject: [MPLS-OPS]: Local significance of labels? >Resent-From: mpls-ops@mplsrc.com >X-Mailing-List: <mpls-ops@mplsrc.com> archive/latest/6170 >X-Loop: mpls-ops@mplsrc.com >Resent-Sender: mpls-ops-request@mplsrc.com >Resent-Bcc: > >What is the benefit of having locally significant labels versus assigning >a single label at the edge that stays with the packet as it transverses >the entire network? Why are labels swapped at each node? > >------- >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
|
|