A method and device for message forwarding based on policy routing
A technology of message forwarding and policy configuration information, applied in the field of information transmission, can solve the problems of large memory and occupation, and achieve the effect of reducing the number
Active Publication Date: 2016-08-17
MAIPU COMM TECH CO LTD
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[0003] Embodiments of the present invention provide a method for forwarding packets based on policy routing, which is used to solve the problem of occupying a large amount of space due to the need to pre-create a policy routing forwarding table for each VRF interface when forwarding data packets based on policy routing. memory problem
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[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0026] The embodiment of the present invention provides a message forwarding method based on policy routing, which can be applied to a public network with multiple VPNs. Its method flow is as follows figure 1 shown, including:
[0027] 101. Receive a data packet through a VRF interface enabled with policy routing.
[0028] 102. Obtain a VPN network identifier to which the VRF interface with the routing policy enabled belongs.
[0029] Wherein, the VPN network id...
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The invention discloses a method and device for forwarding packets based on policy routing, relates to the field of information transmission, and is used to solve the problem of creating a policy routing forwarding device for each VRF interface in advance when forwarding data packets based on policy routing. Publishing caused problems that took up a lot of memory. The method provided by the present invention specifically includes: receiving the data message through the VRF interface of the virtual routing forwarding instance enabling policy routing, and then searching for the corresponding policy routing forwarding table according to the VPN network identifier to which the VRF interface belongs, and performing the received data message Forwarding, in this way, when forwarding data packets, it is only necessary to create a common policy routing forwarding table for multiple VRF interfaces belonging to the same VPN network in advance, instead of creating a policy routing forwarding table for each VRF interface. Therefore, the quantity of the policy routing forwarding table is greatly reduced, and the problem that the policy routing forwarding table occupies a large amount of memory is solved. The present invention is mainly used in the process of data transmission.
Description
technical field [0001] The invention relates to the field of information transmission, in particular to a method and device for forwarding messages based on policy routing. Background technique [0002] In the process of network data transmission, it is usually necessary to forward data packets between multiple routing interfaces until they are sent to the destination address. During the forwarding process, each routing interface uses its own configured forwarding mode to For the problem of how to configure the forwarding mode for each routing interface, the existing technology provides a way to realize the forwarding processing of the message by configuring the routing policy, specifically: when any When policy routing is enabled on a VRF (virtual routing forwarding instance) interface, a policy routing forwarding table is created with this VRF interface as an index to specify the forwarding path of data packets. At this time, forwarding is performed according to the creat...
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IPC IPC(8): H04L12/741H04L45/74
Inventor 孟庆超
Owner MAIPU COMM TECH CO LTD