including operator choice or the application of constraints to the routing
decision. Fundamental to the way TE works is the fact that packets are not
routed at each router in the network, but the path is specified from the outset
and provided as a series of IP addresses (links) that the traffic must traverse.
How these paths accompany the data to prevent it from being routed using SPF
at each router is discussed in Chapters 8 and 9.
CSPF is particularly relevant for TE path computation. The path is usually
computed to place a well-qualified ...
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