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US6092113A
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Method for constructing a VPN having an assured bandwidth
Assignee: KDDI Corp
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Filing: 1997-08-28
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Granted: 2000-07-18
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Expires: 2017-08-28
Abstract
Abstract An IP tunnel is constructed between routers connected with the INTERNET. A bandwidth of the IP tunnel is assured by setting up a reservation resource protocol (RSVP) on the IP tunnel. Further as a traffic control of the routers and on the IP tunnel, a frequency for sending packets, which are processed by an input processor and an output processor inside of the router, is allotted based on a ratio of the reserved bandwidth in each IP tunnel, then an algorithm for controlling the traffic is simplified. Furthermore each of the routers on the IP tunnel has a function for scheduling a reservation and manages a time period at which the virtual private network (VPN) of a type of the reservation resource protocol (RSVP) will be used, then it is possible to reserve the assurance of the bandwidth on the designated date and time in the future.
Inventors
- 👤 Osamu Maeshima
- 👤 Yoshihiro Ito
- 👤 Masami Ishikura
- 👤 Tohru Asami
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:52
CPC Classifications
H; H04; H04L; H04L47/00; H04L47/70; H04L47/82; H04L47/825; H04L12/00; H04L12/28; H04L12/46; H04L12/4604; H04L12/4641; H04L47/72; H04L47/724; H04L47/826
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
122 words
A method for constructing a virtual private network (VPN) having assured bandwidth comprising: constructing an IP tunnel between routers connected with the INTERNET; reserving a desired bandwidth of the IP tunnel by setting-up a resource protocol on the IP tunnel; scheduling a future reservation time period in which the bandwidth reservation will occur; and managing the IP tunnel during the reservation time period with said bandwidth reservation step to assure the bandwidth with the resource protocol wherein, as a traffic control of the routers on the IP tunnel, a frequency for sending packets, which are processed by an input processor and an output processor inside of the routers, is allotted based on a ratio of the reserved bandwidth in the IP tunnel.
Claim 2
Independent Claim
122 words
A method for constructing a virtual private network (VPN) having assured bandwidth comprising: constructing an IP tunnel between routers connected with the INTERNET; reserving a desired bandwidth of the IP tunnel by setting-up a resource protocol on the IP tunnel; scheduling a future reservation time period in which the bandwidth reservation will occur; and managing the IP tunnel during the reservation time period with said bandwidth reservation step to assure the bandwidth with the resource protocol wherein, as a traffic control of the routers on the IP tunnel, a frequency for sending packets, which are processed by an input processor and an output processor inside of the routers, is allotted based on a ratio of the reserved bandwidth in the IP tunnel.
Claim 3
Independent Claim
120 words
A method of assuring bandwidth in a virtual private network, comprising: utilizing routers connected to the Internet to establish an IP tunnel; requesting a reservation schedule for reserving a desired bandwidth in advance of a time period specified in the reservation schedule; managing the IP tunnel with a reservation resource protocol (RSVP) during the time period specified in the reservation schedule to assure the desired bandwidth in the IP tunnel; said managing step giving low priority to non-RSVP packets during the time period specified in the reservation schedule; and said managing step allotting a frequency of processing packets sent and received between the routers across the IP tunnel based on a ratio of the desired bandwidth in the IP tunnel.
Claim 4
Independent Claim
120 words
A method of assuring bandwidth in a virtual private network, comprising: utilizing routers connected to the Internet to establish an IP tunnel; requesting a reservation schedule for reserving a desired bandwidth in advance of a time period specified in the reservation schedule; managing the IP tunnel with a reservation resource protocol (RSVP) during the time period specified in the reservation schedule to assure the desired bandwidth in the IP tunnel; said managing step giving low priority to non-RSVP packets during the time period specified in the reservation schedule; and said managing step allotting a frequency of processing packets sent and received between the routers across the IP tunnel based on a ratio of the desired bandwidth in the IP tunnel.
Claim 5
Independent Claim
113 words
A method of assuring bandwidth in a virtual private network, comprising: utilizing routers connected to the Internet to establish an IP tunnel; requesting a reservation schedule for reserving a desired bandwidth in advance of a time period specified in the reservation schedule; managing the IP tunnel with a reservation resource protocol (RSVP) during the time period specified in the reservation schedule to assure the desired bandwidth in the IP tunnel; said managing step giving low priority to non-RSVP packets during the time period specified in the reservation schedule; and said managing step allotting a buffer size in each of the routers based on a ratio of the desired bandwidth in the IP tunnel.
Claim 6
Independent Claim
113 words
A method of assuring bandwidth in a virtual private network, comprising: utilizing routers connected to the Internet to establish an IP tunnel; requesting a reservation schedule for reserving a desired bandwidth in advance of a time period specified in the reservation schedule; managing the IP tunnel with a reservation resource protocol (RSVP) during the time period specified in the reservation schedule to assure the desired bandwidth in the IP tunnel; said managing step giving low priority to non-RSVP packets during the time period specified in the reservation schedule; and said managing step allotting a buffer size in each of the routers based on a ratio of the desired bandwidth in the IP tunnel.
Claim 7
Independent Claim
140 words
A system for assuring bandwidth across a VPN operating on the internet, comprising: a first router connected to the internet; a second router connected to the internet; said first and second routers establishing an IP tunnel across the internet; said first router requesting a reservation schedule for reserving a desired bandwidth in advance of a time period specified in the reservation schedule, said first and second routers managing the IP tunnel with a resource protocol during the time period specified in the reservation schedule to assure the desired bandwidth in the IP tunnel; said first and second routers each including an input processor and an output processor, said input and output processors allotting a frequency of processing packets sent and received between said routers across the IP tunnel based on a ratio of the desired bandwidth in the IP tunnel.
Claim 8
Independent Claim
140 words
A system for assuring bandwidth across a VPN operating on the internet, comprising: a first router connected to the internet; a second router connected to the internet; said first and second routers establishing an IP tunnel across the internet; said first router requesting a reservation schedule for reserving a desired bandwidth in advance of a time period specified in the reservation schedule, said first and second routers managing the IP tunnel with a resource protocol during the time period specified in the reservation schedule to assure the desired bandwidth in the IP tunnel; said first and second routers each including an input processor and an output processor, said input and output processors allotting a frequency of processing packets sent and received between said routers across the IP tunnel based on a ratio of the desired bandwidth in the IP tunnel.
Claim 9
Dependent Claim
57 words
The system according to claim 4, said first and second routers each including a database connected to a respective processor, said processors confirming a possibility of assuring the desired bandwidth in response to the reservation schedule request, said processors storing the reservation schedule in the respective databases, said processors utilizing the databases to manage the IP tunnel.
Claim 10
Dependent Claim
27 words
The system according to claim 5, said processors rejecting the reservation schedule if said processors determine that the possibility of assuring the desired bandwidth does not exist.
Claim 11
Dependent Claim
29 words
The system according to claim 10, said routers suppressing non-RSVP traffic across the IP tunnel to assure the desired bandwidth during the time period specified in the reservation schedule.
Claim 12
Independent Claim
143 words
A system for assuring bandwidth across a VPN operating on the internet, comprising: a first router connected to the internet; a second router connected to the internet; said first and second routers establishing an IP tunnel across the internet; said first router requesting a reservation schedule for reserving a desired bandwidth in advance of a time period specified in the reservation schedule, said first and second routers managing the IP tunnel with a resource protocol during the time period specified in the reservation schedule to assure the desired bandwidth in the IP tunnel; said first router including resource protocol and non-resource protocol input and output buffers, said second router including resource protocol and non-resource protocol input and output buffers, said routers allotting resource protocol buffer size in each of the routers based on a ratio of the desired bandwidth in the IP tunnel.
Claim 13
Independent Claim
143 words
A system for assuring bandwidth across a VPN operating on the internet, comprising: a first router connected to the internet; a second router connected to the internet; said first and second routers establishing an IP tunnel across the internet; said first router requesting a reservation schedule for reserving a desired bandwidth in advance of a time period specified in the reservation schedule, said first and second routers managing the IP tunnel with a resource protocol during the time period specified in the reservation schedule to assure the desired bandwidth in the IP tunnel; said first router including resource protocol and non-resource protocol input and output buffers, said second router including resource protocol and non-resource protocol input and output buffers, said routers allotting resource protocol buffer size in each of the routers based on a ratio of the desired bandwidth in the IP tunnel.
Claim 14
Dependent Claim
16 words
The method claimed in claim 1, wherein the resource protocol is a reservation resource protocol (RSVP).
Claim 15
Dependent Claim
16 words
The system according to claim 4, wherein the resource protocol is a reservation resource protocol (RSVP).
Claim 16
Dependent Claim
16 words
The system according to claim 8, wherein the resource protocol is a reservation resource protocol (RSVP).
References Cited (Backward Citations)
US5065393A
Cited
US5265091A
Cited
US5828893A
Cited
US5636212A
Cited
US5581703A
Cited
US5701465A
Cited
US5577035A
Cited
US5579312A
Cited
US5732078A
Cited
EP0790751A2
Cited
US5778187A
Cited
US5953336A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-07-18 | 2004-01-17 | 2004-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-07-18 | 2008-01-17 | 2008-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-07-18 | 2012-01-17 | 2012-07-18 | $7700.00 | Window Closed / Lapsed |