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Tunnel-based message forwarding method and label exchange router

A label switching and packet forwarding technology, applied in the field of communication, can solve the problems of wasting tunnel resources and not allowing forwarding packets, and achieve the effect of saving tunnel resources

Active Publication Date: 2007-09-12
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In practical applications, there may be established tunnels on the path between the starting point A and the ending point B, but because the established tunnels cannot completely connect the path between the starting point A and the ending point B, or the FEC of the established tunnel Since packet X is not allowed to be forwarded, the new tunnel cannot use the established tunnel to forward packets, resulting in a waste of tunnel resources

Method used

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  • Tunnel-based message forwarding method and label exchange router
  • Tunnel-based message forwarding method and label exchange router
  • Tunnel-based message forwarding method and label exchange router

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] In this embodiment, the new tunnels to be established include LSR1-LSR5, the interconnection address of LSR2 and LSR1 is 10.45.0.2 / 24, the interconnection address of LSR3 and LSR2 is 10.45.1.3 / 24, and the interconnection address of LSR4 and LSR3 is 10.45.2.4 / 24, and the interconnection address between LSR5 and LSR4 is 10.45.3.5 / 24. Among them, LSR1 is the entrance LSR of the new tunnel, and LSR5 is the exit LSR of the new tunnel; LSR1~LSR4 have established tunnels, LSR1 is the tunnel entrance LSR of the established tunnel, and LSR4 is the tunnel exit LSR of the established tunnel; the entrance of the new tunnel The LSR is the same as the ingress LSR of the established tunnel, both being LSR1.

[0072] In this embodiment, it is assumed that LSR1-LSR4 establish a tunnel by running a dynamic signaling protocol, the FEC is 1.0.0.5 / 32, and a label is popped up at the penultimate hop by using the PHP method. The LSP entries for the established tunnels in LSR1 to LSR4 can be ...

Embodiment 2

[0109] In this embodiment, the new tunnels to be established include LSR1-LSR5, the interconnection address of LSR2 and LSR1 is 10.45.0.2 / 24, the interconnection address of LSR3 and LSR2 is 10.45.1.3 / 24, and the interconnection address of LSR4 and LSR3 is 10.45.2.4 / 24, and the interconnection address between LSR5 and LSR4 is 10.45.3.5 / 24. Among them, LSR1 is the entrance LSR of the new tunnel, LSR5 is the exit LSR of the new tunnel; LSR2~LSR4 have established tunnels, LSR2 is the tunnel entrance LSR of the established tunnel, LSR4 is the tunnel exit LSR of the established tunnel; the entrance of the new tunnel The LSR is different from the ingress LSR of the established tunnel.

[0110] In this embodiment, it is assumed that LSR2-LSR4 establish a tunnel by running a dynamic signaling protocol, the tunnel name is Tunnel3 / 0 / 0, and the FEC is 1.0.0.5 / 32; this embodiment uses the PHP method to pop up the label at the penultimate hop. The LSP entries for the established tunnels in...

Embodiment 3

[0135] In this embodiment, the new tunnels to be established include LSR1-LSR4, the interconnection address of LSR2 and LSR1 is 10.45.0.2 / 24, the interconnection address of LSR3 and LSR2 is 10.45.1.3 / 24, and the interconnection address of LSR4 and LSR3 for 10.45.2.4 / 24. Among them, LSR1 is the ingress LSR of the new tunnel, and LSR4 is the egress LSR of the new tunnel; LSR1~LSR4 have established tunnels, LSR1 is the tunnel ingress LSR of the established tunnel, and LSR4 is the tunnel egress LSR of the established tunnel; The established tunnels overlap completely, and the ingress LSR of the new tunnel is the same as the ingress LSR of the established tunnel, both being LSR1.

[0136] In this embodiment, it is assumed that LSR1-LSR4 establish a tunnel by running a dynamic signaling protocol, the FEC is 1.0.0.5 / 32, and a label is popped up at the penultimate hop by using the PHP method. The LSP entries for the established tunnels in LSR1-LSR4 can still be shown in Table 1-Table...

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PUM

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Abstract

The present invention provide a report approaches and transmit Label Switching router based on the tunnel, the entrance of the tunnel has been built Label Switching Router (LSR), the as-built tunnel export LSR and non-tunnel has been built in LSR posed by the Channel tunnel Label Switching (LSP) static allocation, and configuration LSR tunnel entrance has been built, the tunnel will have built their own entrance LSR reach the path downstream equipment identification information has been set to build the tunnel information, the establishment of the new tunnel completed; When the new tunnel needed to transmit text, in accordance with the method of transmitting LSP Tunnel text was transmitted, and arrived at the tunnel has been built the entrance LSR, in accordance with the entrance of the tunnel has been built LSR reach their downstream equipment will be on the path to the text information from as-built tunnel transponders until the new tunnel export LSR. Application of this invention program, the tunnel can be built into the new tunnel, so that we can effectively use the tunnel has been built to save the tunnel resources.

Description

technical field [0001] The invention relates to the technology in the communication field, in particular to a tunnel-based message forwarding method and a label switching router. Background technique [0002] At present, in order to forward packets more efficiently and securely, a tunnel can be established in the network first, and then packets can be forwarded through the tunnel. For example: in a multiprotocol label switching (MPLS, MultiprotocolLabelSwitching) network, a label switching path (LSP, LabelSwitching Path) can be established first, and then the message is forwarded through the label switching path, and the label switching path can also be called LSP tunnel. [0003] To establish an LSP tunnel, you can run a dynamic signaling protocol or configure it statically. However, no matter which method is adopted, LSP entries need to be configured on a label switching router (LSR, LabelSwitching Edge Router) in the tunnel path. The LSP entry generally includes forwar...

Claims

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Application Information

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IPC IPC(8): H04L12/56H04L12/46H04L29/06H04L45/50
Inventor 周从洋
Owner NEW H3C TECH CO LTD
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