Protecting connection traffic using filters
AssigneeJuniper Networks, Inc.
InventorsPing PAN, Der-Hwa Gan, Keith E. Holleman, Manoj Leelanivas, Nischal Sheth, Arun Vaidyanathan
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Abstract
A connection between network nodes in a communication network is backed up. A failover label-switched path (LSP) is created starting at a first network node of a connection and ending 5 at the second node of the connection, while bypassing the protected connection. In the event of connection failure, data is transmitted through the failover LSP. A network operator can selectively protect different types of data by using filters that bind one or more types of traffic received over one or more interfaces to different failover LSPs.
Claims15
A processor-implemented method for configuring failover label-switched paths for a communications connection between a first node and a second node, the processor-implemented method comprising:
- a) defining a first label-switched path from the first node to the second node, wherein the first label-switched path bypasses the communications connection;
- b) defining a second label-switched path from the first node to the second node, wherein the second label-switched path bypasses the communications connection, and wherein the second label-switched path differs from the first label-switched path;
- c) for all active routes of a first type that use the communications connection, creating a first additional next-hop gateway corresponding to the first label-switched path;
- and
- d) for all active routes of a second type that use the communications connection, creating a second additional next-hop gateway corresponding to the second label-switched path,
- wherein the processor includes at least one of a microprocessor, a network processor and integrated circuits.
A node adapted to terminate a communications connection between it and another node, the node comprising:
- a) at least one storage device for storing
- i) an association of a first traffic type with a first failover label-switched path,
- ii) an association of a second traffic type with a second failover label-switched path, and
- iii) forwarding information used to forward received data;
- b) a forwarding facility adapted to receive data to be forwarded;
- and
- c) a communications connection failover facility for protecting received data to be forwarded over the communications connection when the communications connection has failed, the communication connection failover facility adapted to
- i) determine whether the received data is one of the first traffic type and the second traffic type,
- ii) responsive to a determination that the received data is of the first traffic type, selecting the first failover label-switched path associated with the first traffic type, and responsive to a determination that the received data is of the second traffic type, selecting the second failover label-switched path associated with the second traffic type, and
- iv) forwarding the received data over the selected one of the first and second failover label-switched paths.
A processor-implemented method for configuring a failover label-switched path for a communications connection between a first node and a second node, the processor-implemented method comprising:
- a) defining a label-switched path from the first node to the second node, wherein the defined label-switched path bypasses the communications
- b) associating the communications connection with the defined label-switched path;
- and
- c) updating forwarding information that uses the communications connection in its next hop to include the defined label-switched path associated with the failed communications connection,
- wherein the processor includes at least one of a microprocessor, a network processor and integrated circuits.
Dependencies are inferred from the claim text.