Method and device for transmitting route updating packet

Abstract

The invention provides a method and a device for sending route refreshed messages, wherein the method comprises dividing an interface which enables RIP process into more than one sending groups in a routing information protocol (RIP) process, wherein each sending group is associated with an Update timer, and each Update timer arrives time in turn, and sending routing refreshed messages through interfaces in the sending group which is associated with the Update timer when the Update timer arrives time. The method scatters routing refreshed messages which are originally sent out in the same time to different time point to group to send out, and can reduce the attack of the routing refreshed messages to a system in short time without reducing the quantity of messages which are sent out in unit time.

Description

technical field [0001] The invention relates to routing-related technologies in network communication, in particular to a method and device for sending routing update messages in routing information protocols. Background technique [0002] Routing Information Protocol (RIP, Routing Information Protocol) is a relatively simple Interior Gateway Protocol (IGP, Interior Gateway Protocol), which is mainly used in regional networks with simple structures. Because RIP is easy to implement and does not need to maintain sessions compared with other protocols, it is widely used in ultra-large flat networks with simple structures. [0003] There are mainly four types of timers in RIP: update (Update) timer, timeout (Timeout) timer, suppression (Suppress) timer and collection (Garbage-Collect) timer. Among them, the Update timer defines the sending cycle of sending routing update messages, that is, the routing device needs to broadcast routing updating messages to its adjacent routing ...

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Problems solved by technology

For example: if a RIP process needs to send routing update packets on 600 interfaces, and each interface needs to send all 1800 routing update packets, then a total of 1,080,000 routing update packets will be sent during the sending period when the Update timer expires. Obviously, it will have a great impact on the system in a short period of time

[0005] Although the impact on the system can be reduced to some extent by reducing the number of packets sent per unit time in the sending cycle, for example, the original 60 packets sent by each port per 1s in the sending cycle are reduced to 30 packets sent every 1s. However, it will slow down the convergence speed of all neighboring routing devices, and may even cause the routing update packets of all routes to be sent in one sending cycle, and the next sending cycle will come, which will cause the routing of some routes. Update packets have been unable to be sent, causing all neighboring routing devices to continue to fail to converge on this part of the route

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