On 11/09/2012 09:20 AM, Fatai Zhang wrote:
Hi Jan,
Hi Fatai,
>The PCE is not limited to path computation only. The PCE can set other LSP
parameters as well: RFC5440 defines objects for bandwidth, setup &
hold priorities, the local protection flag, etc. More LSP parameters
have been added in subsequent RFCs and drafts.
[Fatai] I have to indicate that PCE cannot *set* other LSP parameters.
The parameters (eg., bandwidth, priorities, etc) you mentioned are
only used for *path computation*.
I agree. The PCE does not set *any* parameters of the LSP. Only PCC can
do that PCC. PCE can only provide suggestions and must be fully prepared
to have them rejected.
I am not aware of any restriction on what information a PCE is allowed
to suggest to be modified, apart from the fact that ERO and BANDWIDTH
are explictly included in that set (section 5.1.5 of RFC4657).
Bye,
Robert
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