Cross-domain message forwarding method, system and storage system
A message forwarding and cross-domain technology, applied in the field of communication, can solve problems such as heavy configuration workload, increased operation and maintenance difficulty, and limitations, and achieve the effects of reducing hardware costs, increasing speed, message forwarding speed, and reducing the number
Active Publication Date: 2022-04-19
CHINA TELECOM CORP LTD
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Problems solved by technology
[0002] In the carrier network, there are scenarios where end-to-end path optimization is implemented across multiple AS (autonomous system, autonomous system) domains. For specific service flows, IP ACL (Access Control List, Access Control List) is usually used for flow matching. On the one hand, because the IP ACL method is limited by the number of matching entries, there is a scalability problem, and when the number of matching entries is huge, the configuration workload is heavy; on the other hand, because the business flow that needs to optimize the path changes dynamically, this The ACL configuration needs to change with the change of the service flow, which further increases the difficulty of operation and maintenance; and, as the number of cross-AS domains increases, the number of label layers pushed into the message increases, but the depth of the label stack supported by the device is limited by the chip ability
Therefore, based on ACL traffic classification, there are problems of scalability and SR (Segment Routing, segment routing) label stack depth.
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[0029] The present disclosure will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the present disclosure are illustrated. The following will clearly and completely describe the technical solutions in the embodiments of the present disclosure with reference to the accompanying drawings in the embodiments of the present disclosure. Apparently, the described embodiments are only some of the embodiments of the present disclosure, not all of them. Based on the embodiments in the present disclosure, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present disclosure. The technical solution of the present disclosure will be described in various aspects in conjunction with various figures and embodiments below.
[0030] "First", "second" and so on in the following are only used for distinction in expression, and have no other s...
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The disclosure provides a cross-domain message forwarding method, system, and storage system, which relate to the field of communication technology, wherein the method includes: the PE at the end of the SR tunnel cross-domain notifies the address prefix with the SR label, and forwards it at the border of each AS domain on the way The device automatically generates LFIB and performs label replacement, generates a new SR label binding relationship according to the address prefix, and transmits it upstream until the binding relationship between the address prefix and SR label is notified to the head-end PE; the head-end PE Find the LFIB, press the corresponding SR label for the packet header of the matched destination address, and forward it to the destination network according to the label path. The disclosed method, system and storage medium can solve the problems of extensibility and SR label stack depth based on ACL flow classification, reduce the number of entries in the SR label stack, reduce hardware costs, and improve the efficiency of searching label forwarding tables speed and packet forwarding speed.
Description
technical field [0001] The present disclosure relates to the technical field of communications, and in particular to a cross-domain message forwarding method, system and storage system. Background technique [0002] In the carrier network, there are scenarios where end-to-end path optimization is implemented across multiple AS (autonomous system, autonomous system) domains. For specific service flows, IP ACL (Access Control List, Access Control List) is usually used for flow matching. On the one hand, because the IP ACL method is limited by the number of matching entries, there is a scalability problem, and when the number of matching entries is huge, the configuration workload is heavy; on the other hand, because the business flow that needs to optimize the path changes dynamically, this The ACL configuration needs to change with the change of the service flow, which further increases the difficulty of operation and maintenance; and, as the number of cross-AS domains increa...
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IPC IPC(8): H04L45/74H04L45/50H04L47/2441
CPCH04L45/74H04L45/50H04L47/2441
Inventor 何晓明刘志华杨广铭
Owner CHINA TELECOM CORP LTD