The MPLS WG Archive

["Lipovetsky, Sergey" <slipovetsky@virata.com>]

Hi All,

The draft-ietf-mpls-generalized-signaling-00 defines the following LSP
Encoding Types in the Generalized Label Request:

                   Value       Type
                   -----       ----
                     1         Packet
                     2         Ethernet
                     3         ANSI PDH
                     4         ETSI PDH
                     5         SDH
                     6         SONET
                     7         Digital Wrapper
                     8         Lambda (photonic)
                     9         Fiber

The draft-kompella-ospf-gmpls-extensions-00.txt defines the following
related sub-TLVs of the TE Link TLV:

Link descriptor sub-TLV with Link Encoding Type
      Value        Link Encoding Type
          1        Standard SONET
          2        Arbitrary SONET
          3        Standard SDH
          4        Arbitrary SDH
          5        Clear
          6        GigE
          7        10GigE

and Link Mux Capability sub-TLV (draft-ietf-mpls-lsp-hierarchy-01.txt)

       Value         Link Mux Capabilities
           1         Packet-Switch Capable-1 (PSC-1)
           2         Packet-Switch Capable-2 (PSC-2)
           3         Packet-Switch Capable-3 (PSC-3)
           4         Packet-Switch Capable-4 (PSC-4)
          51         Layer-2 Switch Capable  (L2SC)
         100         Time-Division-Multiplex Capable (TDM)
         150         Lambda-Switch Capable   (LSC)
         200         Fiber-Switch Capable    (FSC)

Is there any way to check that an LSP with a given LSP Encoding Types can be
carried over a link with given link encoding type and link mux capability? I
can't see a direct mapping.

Is there other link parameters relevant to this checking?

Other questions relate to the to the CR-LDP TLV encoding.
0x0901 - Generalized Label Request
         draft-ietf-mpls-diff-ext-07.txt uses this value for Diff-Serv
         Which one is correct?
0x0902 - Generalized Label Request with SONET/SDH label range and
         Generalized Label
         Which one is correct?
0x0904 - Label Set and
         Suggested Label
         Which one is correct?

Will 0x0903 be used for the Waveband Label?

How can a downstream LSR know that a waveband allocation is requested?


Thank you in advance,
Sergey
=====================================
Sergey Lipovetsky          +972-9-7663288 (ext.207)
Virata Corporation, Haharoshet 2, Kfar-Saba, Israel