[Isis-wg] draft-ietf-isis-traffic-01.txt

[Tony Li]

Don,


|  I have read the draft and the scanned the working group to understand what 
|  is happening to the metric(s).  While it makes sense that the metrics for
|  IS-IS
|  were made larger and the 3 not commonly used metrics eliminated, I do not 
|  understand the proposal of a single Traffic Engineering Metric. 


Well, it's what we felt was needed.  Note that the existing metrics can
continue to be used if the network administrator/implementation allows it.
There's no reason that you can't run the traffic engineering TLVs in
parallel with the existing TLVs.


|  In my 
|  experience multiple traffic engineering metrics for path selection allow 
|  better traffic engineering capabilities. 


Please say more.  The customer base didn't request this flexibility.


|  Has any thought been given to multiple TE metrics? Can the current proposal
|  be expanded in the future ?


One of the great glories of TLV encoding is the flexibility for future
extensions.  ;-)

Tony