CA2485917A1 - Method and system for router redundancy in a wide area network - Google Patents
Method and system for router redundancy in a wide area network Download PDFInfo
- Publication number
- CA2485917A1 CA2485917A1 CA002485917A CA2485917A CA2485917A1 CA 2485917 A1 CA2485917 A1 CA 2485917A1 CA 002485917 A CA002485917 A CA 002485917A CA 2485917 A CA2485917 A CA 2485917A CA 2485917 A1 CA2485917 A1 CA 2485917A1
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- CA
- Canada
- Prior art keywords
- router
- routers
- relay
- operable
- physical link
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0805—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability
- H04L43/0817—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability by checking functioning
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/28—Routing or path finding of packets in data switching networks using route fault recovery
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/58—Association of routers
- H04L45/586—Association of routers of virtual routers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/04—Arrangements for maintaining operational condition
Abstract
A method for selecting an active router in a communication device includes providing multiple routers in the device, coupling the routers to a single physical link, monitoring a status for each of the routers, and selecting on e of the routers as an active router by positioning its corresponding relay.</ SDOAB>
Claims (23)
1. A method for selecting an active router in a telecommunication device, comprising:
providing a plurality of routers in a telecommunication device, each router comprising a relay having a first position and a second position;
coupling each of the relays of the routers to a single physical link;
monitoring a status for each of the routers; and electing one of the routers as an active router by positioning its corresponding relay.
providing a plurality of routers in a telecommunication device, each router comprising a relay having a first position and a second position;
coupling each of the relays of the routers to a single physical link;
monitoring a status for each of the routers; and electing one of the routers as an active router by positioning its corresponding relay.
2. The method of Claim 1, wherein the telecommunication device comprises a base transceiver site.
3. The method of Claim 2, wherein the single physical link comprises a backhaul link.
4. The method of Claim 3, wherein the backhaul link comprises a T1 connection.
5. The method of Claim 1, wherein monitoring a status comprises exchanging keep-alive signals among the routers.
6. The method of Claim 5, wherein:
the keep-alive signals comprise a performance parameter for each router; and the active router is selected based on the performance parameters.
the keep-alive signals comprise a performance parameter for each router; and the active router is selected based on the performance parameters.
7. The method of Claim 1, wherein the method further comprises:
determining that the performance of an active router has degraded; and selecting another router to be a new active router.
determining that the performance of an active router has degraded; and selecting another router to be a new active router.
8. The method of Claim 1, wherein the step of electing comprises:
determining a performance parameter for each router;
electing the active router based on the performance parameters according to an election protocol; and positioning the relays of the routers based on the election.
determining a performance parameter for each router;
electing the active router based on the performance parameters according to an election protocol; and positioning the relays of the routers based on the election.
9. The method of Claim 8, wherein positioning the relays comprises:
determining a particular time for positioning the relays using the election protocol; and positioning the relays at the particular time.
determining a particular time for positioning the relays using the election protocol; and positioning the relays at the particular time.
10. A telecommunication device, comprising:
a plurality of routers, each router operable to determine a performance parameter for that router;
a bus operable to communicate the performance parameters between the routers;
a physical link; and for each router, a relay operable to couple the router to the physical link, each relay having a first position and a second position, each router operable to position the relay based on the performance parameters received from the other routers.
a plurality of routers, each router operable to determine a performance parameter for that router;
a bus operable to communicate the performance parameters between the routers;
a physical link; and for each router, a relay operable to couple the router to the physical link, each relay having a first position and a second position, each router operable to position the relay based on the performance parameters received from the other routers.
11. The device of Claim 10, wherein the device comprises a base transceiver site.
12. The device of Claim 10, wherein the physical link comprises:
a backhaul link;
a connection coupled to each router; and a coupler coupled to the backhaul link and the connections, the coupler operable to:
receive a first signal from the backhaul link;
communicate the first signal to the connections;
receive a second signal from at least one connection; and communicate the second signal to the backhaul link.
a backhaul link;
a connection coupled to each router; and a coupler coupled to the backhaul link and the connections, the coupler operable to:
receive a first signal from the backhaul link;
communicate the first signal to the connections;
receive a second signal from at least one connection; and communicate the second signal to the backhaul link.
13. The device of Claim 12, wherein the backhaul link is a T1 connection.
14. The device of Claim 10, further comprising an election protocol running on the routers, wherein:
the election protocol is operable to elect an active router based on the performance parameters; and the routers are operable to position their respective relays based on the election of the active router by the election protocol.
the election protocol is operable to elect an active router based on the performance parameters; and the routers are operable to position their respective relays based on the election of the active router by the election protocol.
15. The device of Claim 14, wherein the election protocol is further operable to synchronize the positioning of the relays.
16. A system for providing router redundancy, comprising:
a single physical link;
a plurality of routers coupled to the single physical link, each router comprising a relay, each relay having a connected position connecting the router to the single physical link and a disconnected position operable to interrupt the connection between the router and the single physical link;
means for coupling each of the relays to a single physical link;
means for monitoring a status for each of the routers; and means for electing one of the routers as an active router by positioning its corresponding relay.
a single physical link;
a plurality of routers coupled to the single physical link, each router comprising a relay, each relay having a connected position connecting the router to the single physical link and a disconnected position operable to interrupt the connection between the router and the single physical link;
means for coupling each of the relays to a single physical link;
means for monitoring a status for each of the routers; and means for electing one of the routers as an active router by positioning its corresponding relay.
17. A method for selecting an active router in a telecommunication device, comprising:
providing a plurality of routers coupled to a single physical link, each router comprising a relay having a connected position allowing information to be communicated to the physical link and a disconnected position interrupting communication of information to the physical link;
determining a performance parameter for each router;
determining one of the routers as an active router based on the performance parameters;
positioning the relay of the active router in the connected position; and positioning the relays of all of the other routers in the disconnected position.
providing a plurality of routers coupled to a single physical link, each router comprising a relay having a connected position allowing information to be communicated to the physical link and a disconnected position interrupting communication of information to the physical link;
determining a performance parameter for each router;
determining one of the routers as an active router based on the performance parameters;
positioning the relay of the active router in the connected position; and positioning the relays of all of the other routers in the disconnected position.
18. The method of Claim 17, wherein:
each router is represented as an interface in hot standby routing protocol (HSRP);
the performance parameter for each router comprises an interface health score;
the HSRP makes a determination of the active routers based on the health scores; and the HSRP automatically updates network components on the selection of the active router.
each router is represented as an interface in hot standby routing protocol (HSRP);
the performance parameter for each router comprises an interface health score;
the HSRP makes a determination of the active routers based on the health scores; and the HSRP automatically updates network components on the selection of the active router.
19. The method of Claim 18, wherein:
the health score is based on a status received from a plurality of components of each router; and the health score is communicated as an HSRP keep-alive signal.
the health score is based on a status received from a plurality of components of each router; and the health score is communicated as an HSRP keep-alive signal.
20. The method of Claim 19, wherein the plurality of components comprises:
an accelerator card; and a thermometer.
an accelerator card; and a thermometer.
21. A router, comprising:
a network interface operable to receive a signal from at least one other router;
a relay operable to couple to a physical link, the relay having a first position and a second position; and a route processor operable to position the relay based on the signal.
a network interface operable to receive a signal from at least one other router;
a relay operable to couple to a physical link, the relay having a first position and a second position; and a route processor operable to position the relay based on the signal.
22. The router of Claim 21, wherein:
the signal comprises a first performance parameter for the other router;
the route processor is further operable to determine a second performance parameter for the router; and the route processor positions the relay in the first position if the first performance parameter is higher than the second performance parameter and in the second position if the second performance parameter is higher than the first performance parameter.
the signal comprises a first performance parameter for the other router;
the route processor is further operable to determine a second performance parameter for the router; and the route processor positions the relay in the first position if the first performance parameter is higher than the second performance parameter and in the second position if the second performance parameter is higher than the first performance parameter.
23. The router of Claim 21, further comprising an election protocol running on the route processor, operable to:
determine based on the signal whether the relay needs to be repositioned; and reposition the relay at a particular time such that the relay is repositioned in synchronization with a corresponding relay in the other router.
determine based on the signal whether the relay needs to be repositioned; and reposition the relay at a particular time such that the relay is repositioned in synchronization with a corresponding relay in the other router.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/162,776 US7248560B1 (en) | 2002-06-04 | 2002-06-04 | Method and system for router redundancy in a wide area network |
| US10/162,776 | 2002-06-04 | ||
| PCT/US2003/010500 WO2003105422A1 (en) | 2002-06-04 | 2003-04-03 | Method and system for router redundancy in a wide area network |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2485917A1 true CA2485917A1 (en) | 2003-12-18 |
| CA2485917C CA2485917C (en) | 2010-03-30 |
Family
ID=29731974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2485917A Expired - Fee Related CA2485917C (en) | 2002-06-04 | 2003-04-03 | Method and system for router redundancy in a wide area network |
Country Status (7)
| Country | Link |
|---|---|
| US (2) | US7248560B1 (en) |
| EP (1) | EP1510047B1 (en) |
| CN (1) | CN100397843C (en) |
| AT (1) | ATE531165T1 (en) |
| AU (1) | AU2003221823B2 (en) |
| CA (1) | CA2485917C (en) |
| WO (1) | WO2003105422A1 (en) |
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-
2002
- 2002-06-04 US US10/162,776 patent/US7248560B1/en active Active
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- 2003-04-03 WO PCT/US2003/010500 patent/WO2003105422A1/en not_active Application Discontinuation
- 2003-04-03 EP EP03718222A patent/EP1510047B1/en not_active Expired - Lifetime
- 2003-04-03 AU AU2003221823A patent/AU2003221823B2/en not_active Ceased
- 2003-04-03 AT AT03718222T patent/ATE531165T1/en not_active IP Right Cessation
- 2003-04-03 CN CNB038127040A patent/CN100397843C/en not_active Expired - Fee Related
- 2003-04-03 CA CA2485917A patent/CA2485917C/en not_active Expired - Fee Related
-
2007
- 2007-07-24 US US11/782,029 patent/US7554903B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US7554903B2 (en) | 2009-06-30 |
| EP1510047A1 (en) | 2005-03-02 |
| ATE531165T1 (en) | 2011-11-15 |
| US7248560B1 (en) | 2007-07-24 |
| AU2003221823B2 (en) | 2009-01-08 |
| WO2003105422A1 (en) | 2003-12-18 |
| AU2003221823A1 (en) | 2003-12-22 |
| CN1659831A (en) | 2005-08-24 |
| EP1510047B1 (en) | 2011-10-26 |
| CN100397843C (en) | 2008-06-25 |
| US20070264971A1 (en) | 2007-11-15 |
| CA2485917C (en) | 2010-03-30 |
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