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Routing table selection in a policy based routing system

A routing table and routing technology, applied in transmission systems, digital transmission systems, program control design, etc., can solve the problems of reduced routing table selection speed, RPDB difficulty and burden impact, and achieve the effect of easy management

Active Publication Date: 2020-01-03
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Routing table selection often becomes seriously slow as each packet may need to be compared against a large number of PBR rule selectors
In addition, as the number of PBR rules in each RPDB increases, the difficulty and burden of managing RPDBs also suffers

Method used

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  • Routing table selection in a policy based routing system
  • Routing table selection in a policy based routing system
  • Routing table selection in a policy based routing system

Examples

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Embodiment Construction

[0028] The following description describes methods and apparatus for selecting a routing table for a packet in Policy Based Routing (PBR) by including a network domain indication and a packet classification indication associated with the packet in a firewall mark (fwmark). In the following description, numerous specific details are set forth, such as logic implementations, opcodes, means for specifying operands, resource partitioning / sharing / duplication implementations, types and interrelationships of system components, and logic partitioning / integration choices in order to provide A thorough understanding of the systems, devices, structures, methods and designs of the present invention. However, it will be understood by those skilled in the art that the embodiments described herein may be practiced without such specific details. In other instances, control structures, gate level circuits and full software instruction sequences have not been shown in detail in order not to obs...

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Abstract

A method implemented by a network device for selection of a routing table in a Policy Based Routing (PBR) system is described. The method may include receiving a packet from a first network domain; generating a firewall mark for the packet, wherein the firewall mark includes a network domain indication and a packet classification indication; determining a match between the network domain indication of the packet and a selector of a matched rule in a set of rules; and upon determining the match between the network domain indication of the packet and the selector of the matched rule, inputting the firewall mark to a function of the matched rule to identify a routing table for the packet.

Description

technical field [0001] Embodiments described herein relate to the field of selecting routing tables; more specifically, selecting routing tables for packets in Policy Based Routing (PBR) systems. Background technique [0002] Routing is the process of selecting a path for traffic within a network or between or across multiple networks. In some cases, routing may be performed to partition network resources. There may be many reasons for dividing network resources in a routing network, and the use of multiple routing tables in a routing device is a technique that facilitates describing the structural separation of routing control and forwarding behavior without requiring additional hardware units in the form of Add additional routing devices. For example, (1) when it is necessary to separate the services of different enterprises passing through the public equipment, (2) in the scheme of providing special path diversity forwarding through an independent network, (3) as a rout...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/725H04L12/741H04L45/122H04L45/586H04L45/74
CPCH04L45/308H04L45/54G06F9/45558G06F2009/45595H04L45/20H04L45/586H04L63/029H04L69/22
Inventor A.法兰森T.哈马姆
Owner TELEFON AB LM ERICSSON (PUBL)