The MPLS WG Archive[Date Prev][Date Next][Thread Prev][Thread Next] [Date Index][Thread Index][Author Index][Subject Index] AW: New MPLS charter
Georg, you wrote"...we can define new ways of carrying labels where new kinds of link layers may emerge out of the Optical work". Let me think in this direction: Let me call all so far defined LSPs "User Plane LSPs" because they transmit user data (in such a way that no transit-LSR will evaluate the IP Header of the user data packets). We may define as well "Control Plane LSPs": They should transmit only messages for establishing/terminating User Plane LSPs. Hereby the "Control Plane" labels should only be used to determine the next hop( = replacement of the longest prefix match mechanism). Each transit-LSR should evaluate the IP Header and even the entire "Control Plane" packet =MPLS-message like RSVP-PATH or a CRLDP-LABEL_REQUEST,... Remains the question how and when to install the NHLFEs of the "Control Plane" labels: Well, BGP4, PIM, LDP-unsolicited downstream may be used to install them. The benefit: The establishing of User Plane LSPs by means of RSVP resp. LDP-downstream-on-demand, can be done almost as fast as transmitting user data by the User Plane LSP. Another goal: Studying and specifying the case where a Control Plane LSP and any of its associated User Plane LSPs only share the common endpoints but not the route between these endpoints. What do you think ? Heinrich Hummel Siemens AG heinrich.hummel@icn.siemens.de --------------------------------------------------------------------- > Spencer - > > The way I read that (and I would like to be wrong on this, but doubt > that I am) is we can define new ways of carrying labels where new > kinds of link layers may emerge out of the Optical work. Also I don't > really anticipate any need in that area, since we already have an > encapsulation over PPP and PPP is likely to be defined over any thing > that emerges out of the optical work. > > ...George > > ================================================================== > George Swallow Cisco Systems (978) 244-8143 > 250 Apollo Drive > Chelmsford, Ma 01824 |
|