The MPLS WG Archive

[Ravi Sastry <rsastry@lucent.com>]

 Kireeti:
 
   I have a couple of questions on the LSP hierarchy draft
   These may be nitty gritty details. I thought I would ask them
   anyway. 

   1) Do FA-LSPs span across multiple OSPF areas?  If the answer is
      yes, 
       a) the OSPF-TE draft need to be extended to support
          summarization of TE-LSAs across areas.    
       b) I am not sure how forwarding adjacencies can be represented
          as unnumbered links.

   2) Suppose, the metric on the path to FA-LSP tail-end changes such a
      way that, there is a better TE path between head-end and the
      tail-end. Then all the LSPs that follow FA-LSP path may need to
      be rerouted (assuming they are not pinned).  This calls for
      considerable reroute processing at the head-end of the FA-LSP.

    
  Overall I think it is a good draft and, should be adopted as IETF
  draft. 

 thanks

 ravi/