Systems and techniques for enabling packet networks to carry time-sensitive
data in an efficient manner are described. A packet traverses a packet
network through the creation of a packet network tunnel. Each router can
propose, and establish if possible, a detour tunnel around the failure
without the knowledge or consent of a tunnel manager. Establishment and
maintenance of packet network tunnels is also prioritized so any packet
network tunnel authorized by the tunnel manager has precedence over any
packet network tunnel initiated by a router without the authorization of
the tunnel manager.
