Paper Info
Title
Leveraging IP signaling and routing to manage UPSR-based transport networks
Abstract
An important requirement in the IP-based control of TDM optical transport networks is to utilize the built-in protection capabilities of SONET unidirectional path switched rings (UPSRs) and automate UPSR protected path setup in mixed mesh-ring networks. This requires modifications to existing IP signaling and routing protocol and new processing rules at the network nodes. In this paper, we leverage IP routing and signaling, and MPLS fast-reroute techniques to accurately advertise UPSR ring topologies and dynamically establish UPSR protected paths across a transport network. Our proposal also makes a NUT-like (non-preemptable unprotected traffic) feature possible in UPSRs, which allows for efficient utilization of UPSR protection bandwidth. We achieve this by encoding UPSR-specific information in the open shortest path first (OSPF) link state advertisement and in signaling messages of the resource reservation protocol (RSVP) with TE extensions. In addition, we modify the signaling and routing state machines at the nodes to interpret and process this information to perform UPSR topology discovery and path computation. The uniqueness of our proposals is that the algorithms and the rules specified in the paper allow for existing IP-based protocols (such as those within the GMPLS framework, which currently applies to mesh networks) to be efficiently adapted for this context, while still achieving our objective of exploiting UPSR protection capabilities.
Year
DOI
Venue
2003
10.1109/ICC.2003.1204587
Communications, 2003. ICC '03. IEEE International Conference
Keywords
DocType
Volume
ip networks,sonet,multiprotocol label switching,network topology,routing protocols,telecommunication network management,telecommunication signalling,ip routing protocol,ip signaling protocol,ip-based control,mpls fast-reroute techniques,tdm optical transport networks,upsr ring topologies,upsr-based transport networks,mesh-ring networks,open shortest path first link state,resource reservation protocol,routing state machines,signaling state machines,unidirectional path switched rings,routing protocol,optical transport network,state machine,open shortest path first,ring network,ip routing,mesh network
Conference
2
ISBN
Citations 
PageRank 
0-7803-7802-4
0
0.34
References 
Authors
5
3
Name
Order
Citations
PageRank
Vishal Sharma151.28
Abhimanyu Das231422.43
Charles Chen372.84