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Optimum restart implementing apparatus and method under resource reservation protocol flow engineering

A resource reservation protocol and traffic engineering technology, which is applied in the field of implementation devices for graceful restart under resource reservation protocol traffic engineering, can solve the problems that affect system performance, the system is difficult to support specifications of larger capacity, and the method for implementing GR, etc. Achieve the effect of improving system performance and large-capacity specifications

Inactive Publication Date: 2009-04-29
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0024] According to the above technical solutions, one RSVP-TE instance is enough to support the LSP with a small capacity specification, but multiple RSVP-TE instances may be required to support a larger capacity specification. However, there is no effective deployment scheme for distributed RSVP-TE instances in the prior art, nor is there an effective method for implementing GR under the distributed deployment scheme, which makes it difficult for the system to support larger capacity specifications , affecting system performance

Method used

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  • Optimum restart implementing apparatus and method under resource reservation protocol flow engineering
  • Optimum restart implementing apparatus and method under resource reservation protocol flow engineering
  • Optimum restart implementing apparatus and method under resource reservation protocol flow engineering

Examples

Experimental program
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Embodiment 1

[0051] Embodiment 1: Embodiment 1 of the present invention provides a distributed RSVP-TE implementation device for GR, such as figure 2 Shown is a schematic structural diagram of the device. The device includes a signaling message distribution unit, a signaling management unit, and a signaling processing unit.

[0052] Wherein, the signaling message distribution unit is set on the line card or control card of the label switching router LSR, and is used to forward the received distributed resource reservation protocol traffic engineering RSVP-TE message to the signaling processing unit; And forward the negotiated Hello message to the signaling management unit. The signaling message distribution unit is one or more, and receives RSVP-TE messages sent from one or more interfaces, where the interface refers to the interface on the line card.

[0053] The signaling management unit is set on the control card of the LSR, and is used to maintain the Hello session between the LSR and nei...

Embodiment 2

[0057] Embodiment 2: Embodiment 2 of the present invention provides a signaling message distribution method based on the implementation device described in Embodiment 1, such as image 3 Shown is a schematic flow diagram of the method, and the method includes:

[0058] Step 31: Determine the type of the received message.

[0059] Specifically, the message message reported by each interface is first received, and then the type of the received message is judged, that is, whether the received message is a Hello message or another RSVP-TE message. The above Hello message belongs to One of RSVP-TE messages.

[0060] Step 32: If the received message is a Hello message, report the message to the signaling management unit for processing.

[0061] Step 33: If the received message is an RSVP-TE message other than the Hello message, further query the local label switching path LSP distribution table.

[0062] In this step 33, when the received message is another RSVP-TE message, the local LS...

Embodiment 3

[0070] Embodiment 3: Embodiment 3 of the present invention uses a specific example to describe the signaling message distribution method, such as Figure 4 Shown is a schematic diagram of the signaling interaction of this example, Figure 4 Include:

[0071] LCRSVP instance, the function of the LCRSVP instance is equivalent to a signaling message distribution unit;

[0072] A CRSVP instance, the function of which is equivalent to a signaling management unit; and

[0073] DRSVP instance, the function of the DRSVP instance is equivalent to a signaling processing unit.

[0074] The specific signaling interaction process is:

[0075] a) LCRSVP first parses the received message. If the message is a Hello message, it is reported to CRSVP for processing, and the processing flow ends.

[0076] b) If the message is a non-Hello message, LCRSVP will query the local LSP distribution table.

[0077] c) If the corresponding DRSVP is queried, the LCRSVP forwards the message to the corresponding ...

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Abstract

An embodiment of the invention provides a device for realizing graceful restart under of resource reservation protocol and a method thereof. Specifically the circuit card or control card of the label switch router LSR is disposed of a signaling information dispensing unit, a signaling managing unit and a signaling processing unit. The dispensing and processing of RSVP-TE signaling information and controlling the corresponding GR processing procedure are executed on the base of each unit. Thus the distributed disposition of RSVP-TE living example can be effectively realized. At the same time a GE realizing plan under distributed disposition is given to realize the equal and effective distribution of LSP among a plurality of RSVP-TE living examples. Thereby the system can support larger capability standard and increase the system performance.

Description

Technical field [0001] The invention relates to the field of network communication, in particular to a device and method for implementing graceful restart under resource reservation protocol flow engineering. Background technique [0002] At present, in network communication, Graceful Restart (GR) technology under Resource ReSerVation Protocol-Traffic Engineering (RSVP-TE) is a method to achieve high system reliability. When label switching routers When the control plane of the (Label-SwitchRouter, LSR) node fails, the RSVP-TE signaling state will be lost; when the control plane fails to recover, this method can restore the original signaling state with the assistance of neighbor nodes , Without losing the state of the forwarding plane. [0003] In addition, in order to notify neighbor nodes that they have GR capability, the prior art also extends the negotiation message Hello message, and adds a restart capability Restart_Cap object to this message, which includes two values: Re...

Claims

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Application Information

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IPC IPC(8): H04L12/56H04L12/24H04L45/28
Inventor 胡毅
Owner HUAWEI TECH CO LTD
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