On Apr 12, 2007, at 8:03 PM, Greg Mirsky wrote:
Dear Editors,
I think that wording of chapter 3.3 Flooding Scope can use some
refinement. Currently it reads:
" The flooding scope for PCE information advertised through OSPF
can be
limited to one or more OSPF areas the PCE belongs to, or can be
extended across the entire OSPF routing domain.
Note that some PCEs may belong to multiple areas, in which case the
flooding scope may comprise these areas. This could be the case for
an ABR for instance advertising its PCE information within the
backbone area and/or a subset of its attached IGP area(s). "
But the scope of OSPFv2 or OSPFv3 Router Information LSA can be
either an Area or Autonomous System, but it can not be several
areas. If PCED TLV needs to be flooded through some but not all
areas, the proper Router Information LSA must be originated by the
PCE into each area. And here I have a question - would PCED TLV
MUST be the same in all areas or it MAY be different?
If a PCE acting as an ABR (attached to area 0 and area 1) originates
an LSA Type 10 in area 0 and area 1, each LSA could be different indeed.
Thanks.
JP.
Regards,
Greg
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