Resource management method in label switching network

• US 20040073650A1
• Filed: 09/18/2003
• Published: 04/15/2004
• Est. Priority Date: 09/20/2002
• Status: Abandoned Application

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: Nakamura, Mitsuhiro
• Application Number:
  US10/664,635
• Publication Number:
  US 20040073650A1
• Time in Patent Office: Days
• US Class Current: 709/223
• CPC Class Codes: H04L 45/302 Route determination based on requested QoS
• CPC Class Codes: H04L 45/50 using label swapping, e.g. multi-protocol label switch [MPLS]
• CPC Class Codes: H04L 47/122 by diverting traffic away from congested entities
• CPC Class Codes: H04L 47/15 in relation to multipoint traffic arrangements for broadcast or multicast in data networks H04L12/18
• CPC Class Codes: H04L 47/70 Admission control; Resource allocation
• CPC Class Codes: H04L 47/724 at intermediate nodes, e.g. resource reservation protocol [RSVP]
• CPC Class Codes: H04L 47/746 Reaction triggered by a failure
• CPC Class Codes: H04L 47/762 triggered by the network
• CPC Class Codes: H04L 47/822 Collecting or measuring resource availability data
• CPC Class Codes: H04L 47/825 Involving tunnels, e.g. MPLS
• CPC Class Codes: H04L 47/826 Involving periods of time

Abstract

A reservation path optimization system for optimizing a reservation path between specified nodes configuring a network includes a reservation path setting module for setting the reservation path and a bandwidth for establishing a predetermined session between specified nodes, and a reservation path re-setting module for periodically re-setting the reservation path on the basis of the bandwidth set by the reservation path setting module.

Claims

1. A resource management method for managing resources in a label switching network, comprising:

retaining a bandwidth of an on-reservation session and a bandwidth of an on-communication session; and

executing periodical re-setting of a path with respect to the bandwidth occupied by the on-reservation session.

2. A resource management method in a label switching network according to claim 1, further comprising:

recording a failure count, for a fixed period, of a link causing a failure in a reservation request in a previous period; and

fluctuating a weight of the link that tends to cause the failure on the basis of a history of the failure count.

3. A resource management method in a label switching network according to claim 1, further comprising fluctuating a re-setting period of the path in accordance with the reservation request failure count.

4. A reservation path optimization system for optimizing a reservation path between specified nodes configuring a network, comprising:

a reservation path setting module for setting the reservation path and a bandwidth for establishing a predetermined session between specified nodes; and

a reservation path re-setting module for periodically re-setting the reservation path on the basis of the bandwidth set by said reservation path setting module.

8. A reservation path optimization system according to claim 4, further comprising a module for fluctuating the period.

9. A reservation path optimization system according to claim 4 or 5, wherein the label switching network is an MPLS network, and the reservation path is Label Switched Path.

5. A reservation path optimization system for optimizing a reservation path between specified nodes configuring a label switching network, comprising:

a reservation path setting module for setting the reservation path and a bandwidth for establishing a predetermined session between specified nodes; and

a reservation path re-setting module for re-setting the reservation path set by said reservation path setting module.

6. A reservation path optimization system according to claim 5, the reservation path re-setting module periodically re-sets the reservation path on the basis of the bandwidth set by said reservation path setting module.

7. A reservation path optimization system according to claim 5, the reservation path re-setting module periodically re-sets the reservation path on the basis of specified algorithm

10. A reservation path optimization method for optimizing a reservation path between specified nodes configuring a network, comprising:

setting the reservation path and a bandwidth for establishing a predetermined session between specified nodes; and

periodically re-setting the reservation path on the basis of the bandwidth set by said reservation path setting.