| US 7,596,094 B2 | ||
| System and method for transmission of operations, administration, and maintenance packets between ATM and switching networks upon failures | ||
| Gary J. Puppa, Orleans (Canada); Robin Jeffrey Park, Kanata (Canada); Brett Graham Cameron, Ottawa (Canada); and Gatot Susilo, Kanata (Canada) | ||
| Assigned to Alcatel-Lucent Canada Inc., Kanata, Ontario (Canada) | ||
| Filed on May 04, 2006, as Appl. No. 11/417,172. | ||
| Application 11/417172 is a continuation of application No. 10/015575, filed on Dec. 17, 2001, granted, now 7,092,361. | ||
| Prior Publication US 2006/0203717 A1, Sep. 14, 2006 | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. H04J 1/16 (2006.01); H04L 12/56 (2006.01) | ||
| U.S. Cl. 370—242 [370/236; 370/395.1; 370/401] | 22 Claims |
| 5. For an ATM network carrying an ATM connection in a label switched path (LSP) over a core MPLS network, a method of notifying
network nodes about a disruption in service, comprising the steps of:
a) providing an ATM/MPLS edge switch at an interface between the ATM network and the MPLS network;
b) establishing a routing path traversing a first segment of the ATM network, over the edge switch to the MPLS network towards
a second segment of the ATM network;
c) monitoring the routing path at the edge switch and generating an alarm signal upon detection of a fault affecting the LSP;
and,
d) transmitting the alarm signal to all network nodes of the ATM network affected by the fault.
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