Tom, 

Comments inserted below:


-----Original Message-----

First a couple of meta comments on the draft:

- Sizes of type and lengths in TLVs are inconsistent (some 16 bits, some 32 
bits). It might be just as well to make all of them 16 bits.

[Linda] will correct it. 

- For the above, I think the Start VNID field is 4 bytes not 2 bytes.
- Please avoid implicitly setting constraints on the data plane in the 
definition of control plane. For instance, I've already made arguments that VN 
ID might be thirty-two bits, and there's little cost to defining thirty-two bit 
VN IDs in the control plane.

[Linda] Sorry it should be 4 bytes (with 1 byte reserved and 24 bits for the 
VNid). 

Linda
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> For 24-bits VN ID, there could be 16million VNs. Even with the “Start VN ID”
> listed, the number of bytes for the bitmap can be very large.
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> Therefore, I think it is better to have a flag indicating if the VNs 
> are listed individually, Upper/Lower ranges, or bit mapped.
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I wouldn't use a flag for that, it's probably cleaner to define another TLV 
type that gives a list of VNIDs. Either the list or bit-map can be used 
interchangeably.

Tom

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> Any other suggestions?
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> Linda
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