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Revisions
2002-06-25 00:00
Initial version of the preferred routes MIB.
Preferred Route allows the user an improved control over
the Soft Permanent Virtual Circuit (SPVC) or Soft Permanent
Virtual Path (SPVP) connections. The use of network
resources by these connections can be explicitly specified
through the exact lowest-level nodes and the associated
links the connection has to traverse.
In subsequent discussion, the term SPVC implicitly applies
also to SPVP.
Preferred route is specified only at originating node.
When an originating node selects a connection to be
rerouted, the node searches for a route. If a preferred
route is configured for the connection, the originating
node uses the configured route as the basis of routing.
Terminologies used:
Network Element (NE):
The pair of a node identifier and the egress port
Identifier associated to the node.
Master node of a connection:
It is the node which owns the connection and is
responsible to establish a data path from its end to
the remote end.
Route Identifier:
It is a number uniquely identifying a preferred
route within the master node.
A preferred route consists of up to 20 network elements.
The number of network elements valid within the route is
specified by the user.
Contextually, the node at the first network element is the
originating node; the node at the last network element (as
specified by the user in the number of valid network
elements) is the destination node.