Title :
Distributing Shared Regenerator Information in GMPLS-Controlled Translucent Networks
Author :
Sambo, Nicola ; Andriolli, Nicola ; Giorgetti, Alessio ; Cugini, Filippo ; Valcarenghi, Luca ; Castoldi, Piero
Author_Institution :
Scuola Superiore Sant´´Anna, Pisa
fDate :
6/1/2008 12:00:00 AM
Abstract :
Sparse opto-electronic regenerators are used in optical networks to overcome optical signal quality degradations. Regenerators can be time-shared by dynamic lightpaths. However, current GMPLS control plane does not distribute regenerator information to network nodes. Three regenerator information distribution methods for GMPLS-controlled networks are proposed. The first one, Regeneration Availability during Signaling (RAS), is based on the RSVP- TE signaling protocol, while the others, Regeneration Capability Advertisement (RCA) and Regeneration Availability Advertisement (RAA), are based on the OSPF-TE routing protocol. Simulations show that RAA obtains the lowest blocking, while RCA the highest. Moreover, RAA only slightly increases the control plane load compared to RAS.
Keywords :
multiprotocol label switching; optical control; optical fibre networks; optical repeaters; optoelectronic devices; routing protocols; signalling protocols; GMPLS-controlled translucent network; OSPF-TE routing protocol; RSVP- TE signaling protocol; distributing shared regenerator information; optical network; regeneration availability advertisement; sparse opto-electronic regenerator; Availability; Bandwidth; Collaborative work; Communication system traffic control; Costs; Degradation; Network topology; Optical fiber networks; Repeaters; Routing protocols;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2008.080258
