An ip keep-alive method and client for user migration

Abstract

Embodiments of the present invention provide an IP keep-alive method and client for user migration. The DHCP-Client of the dynamic host configuration protocol client receives and parses the DHCP-ACK message; wherein, the DHCP-ACK message is when the dynamic host configuration protocol DHCP server detects the lease time before the migration corresponding to the MAC address of the user When expiring, it is sent by the Dynamic Host Configuration Protocol DHCP server to the Dynamic Host Configuration Protocol client DHCP-Client; the DHCP-ACK message includes: the MAC address of the user, the IP address that the current user distributes and the current lease time; Judging whether the IP address assigned by the current user corresponding to the MAC address of the user is the IP address after migration according to the current lease time, if so, releasing the IP address before the migration, and keeping alive the IP address after the migration. Solved the problem that the user cannot re-authenticate or the authentication client address is released by mistake, causing the user to be unable to access the Internet.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to an IP keep-alive method for user migration and a client. Background technique [0002] Internet security is a global issue in today's world. Judging from the current market applications, it has become a trend to authenticate users who access the network. Authentication technologies or methods are nothing more than 802.1x, non-aware authentication MAB, Web authentication and PPPoE ( point-to-point protocol over ethernet) authentication, these authentication methods have their own advantages and disadvantages. With the wide application of authentication methods in industries such as university networks, enterprise networks, and government affairs networks, a single authentication method can no longer meet the needs of different user groups. Therefore, sharing multiple authentication methods has become a trend. [0003] figure 1 It is a common topology network for 802.1x a...

AI Technical Summary

Problems solved by technology

However, in reality, these users also have the problem of office terminal migration. When migrating from MAB-VLAN or authentication-free VLAN to other VLANs, due to the existence of previous authentication entries, all packets (ARP, authentication protocol packets) http, etc.) cannot be re-authenticated due to failure to pass the authentication, which affects users' access to the Internet

[0008] At the same time, in the actual topology environment, there is also the problem of network disconnection caused by the incorrect release of the IP address of the client due to the aging problem of the migrated DHCP-SNP entry.

Images