Resource warning processing method and routing switching equipment

Abstract

The embodiment of the invention discloses a resource warning processing method and routing switching equipment. The resource warning processing method comprises the following steps that: the routing switching equipment receives routing messages; when the protocol module which is in accordance with the type of a protocol of the information in the routing switching equipment is in an overflow status or the resource of the routing switching equipment is insufficient, the routing messages are discarded; and after the routing messages are discarded, and when being not marked to be the overflow status, the protocol module is set to be marked with the overflow status. When the resource of the routing switching equipment is insufficient, the embodiment of the invention ensures that the original transmission service of the routing switching equipment operates continuously, and strengthens the usability and the anti-risk capability of the routing switching equipment and a network.

Description

technical field [0001] The embodiment of the present invention relates to the field of network technologies, and in particular to a method for processing resource alarms and routing and switching equipment. Background technique [0002] Routing and switching equipment is usually an embedded device, and the memory resources of the routing and switching equipment are limited, and the capacity of the routing table supported by the switching chip is limited. figure 1 A schematic diagram of a resource utilization model for prior art routing and switching equipment, such as figure 1 As shown, in order to achieve the purpose of learning routes and generating routing forwarding tables, so as to forward and exchange network data, routing switching devices usually run a variety of dynamic routing protocols, such as: Open Shortest Path First (Open Shortest Path First; hereinafter referred to as: OSPF) protocol, Intermediate System-to-Intermediate System (Intermediate System-to-Interme...

AI Technical Summary

Problems solved by technology

Assuming that the resource of R is insufficient, R failed to correctly learn the network segment 192.168.0.0 / 24, so for the data packets entering the network from R2, the destination address is the host address in the 192.168.0.0 / 24 network segment, these data packets After being forwarded to R, because R's forwarding table does not have the forwarding information of this network segment, R cannot forward the data packets for this network segment, which leads to problem 1: Some destination networks are unreachable

In this example, if R learned the reachable network segment 10.0.0.0 / 16 from R2, but failed to learn the reachable network segment 10.0.1.0 / 24 from R1 due to insufficient resources, in this case, the For a packet entering the network with a destination address of 10.0.1.23, the forwarding table of R2 is complete, so R2 determines that the destination address of the packet is at R1, so R2 forwards the packet to R, and R lacks 10.0.1.0 / The routing information of 24 is matched to the network segment 10.0.0.0 / 16 through route matching, that is to say, R determines that the message should reach R2 before reaching its destination, so R will forward the message to R2, so, A routing loop is formed, so that the above message is continuously forwarded between R and R2, which leads to problem 2: the routing loop of the network

[0007] Insufficient memory resources of routing and switching devices have seriously affected the operation of software on routing and switching devices. In order to avoid software modules from hanging or other crashes, in the prior art, routing and switching devices generally stop running dynamic routing when memory resources are alarmed. protocol, and release all the routes learned by the dynamic routing protocol. In this case, the routing switching device will no longer have the forwarding capability due to missing routes, that is to say, the situation of problem 1 will be seriously amplified.

[0008] Regarding the two problems caused by insufficient routing and switching equipment resources, problem 2 is far more serious than problem 1, because the routing loop in problem 2 will cause the entire network to be unavailable, while problem 1 is only the forwarding of a single routing and switching device affected

[0009] For insufficient routing and switching equipment resources, the existing technology generally stops the operation of the routing protocol, that is to say, the routing and switching equipment gives up routing learning and no longer participates in network forwarding, which will cause the unavailability of the network and affect the operation of network services. And it will have a serious impact on the production and operation activities using the network

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