Method, service node equipment and access node equipment for keep-alive processing

Abstract

The invention discloses a method, service node equipment and access node equipment for keep-alive processing, wherein the method comprises the following steps: when a user is accessed to the service node equipment through the access node equipment, the service node equipment interacts with the access node equipment and sends user key information of changes of online status to the access node equipment; the service node equipment receives the information of offline users, which is fed back by the access node equipment through checking a media access control address table; and according to the information of the offline users, the service node equipment conducts keep-alive processing on the users hang up under the access node equipment. Pressure of users detected by SN is dispersed to different ANs, thus reducing the pressure of keep-alive processing of the SN to the users, avoiding possible abnormal problems caused by that the SN is too busy due to large keep-alive processing amount inSN, and guaranteeing the stability of network.

Description

technical field [0001] The present invention relates to access technology, in particular to a method for keeping alive, a service node device and an access node device. Background technique [0002] See figure 1 , the basic networking of the existing broadband access network includes: the user host accesses the service node (Service Node, SN) device through the access node (Access Node, AN) device, obtains the address and the user assigned by the operator at the SN device Strategy. When a user goes online, the SN device will establish a relevant user session table, and keep alive the user in different ways, so as to delete the user who goes offline abnormally but occupies the system resources of the device in time. [0003] The current user types for SN access are mainly divided into Dynamic Host Configuration Protocol (Dynamic Host Configuration Protocol, DHCP) users and Point-to-Point Protocol Over Ethernet (PPPOE) users on Ethernet. PPPOE users include but are not limit...

AI Technical Summary

Problems solved by technology

[0006] 1. As the ability of SN to access users increases, the number of users that can be accessed under the AN connected by SN is increasing. At this time, the keeping alive of a large number of users will put a lot of pressure on SN equipment

[0007] 2. The SN device needs to process the user's keep-alive message regardless of whether the user is active or not, which requires a lot of unnecessary system resources

[0008] 3. When the user fails to keep alive, the SN cannot determine whether the link between the SN and the AN, or the link between the AN and the user is faulty, and cannot make correct fault handling

[0009] 4. The SN keeps the user alive through the user access line and occupies bandwidth. At the same time, the ARP method of DHCP is a broadcast method, which has security problems and is easily blocked by the user's firewall.

[0010] 5. The SN device adopts different keep-alive methods for PPPOE and DHCP users, which increases the complexity of SN device processing

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