Hangzhou H3c Technologies Co., Ltd

Min Yao

Jianfeng Liu

Xiangqing Chang

Zhonghua Gao

Haitao Zhang

Yang Shi

Tao Zheng

Liyao Zhao

A method is provided for a master apparatus of a Virtual Router Redundancy Protocol (VRRP) in a dual-homed node that is a part of a dual-homed network to implement a Layer 3 apparatus. The dual-homed network includes the dual-homed node and a Layer 2 MPLS-Transport Profile (MPLS-TP) network. The method includes monitoring a state of an uplink, when the monitoring detects that the uplink has a failure, notifying an original backup apparatus of the VRRP to perform a master-backup switch, and notifying a downlink apparatus of the master apparatus of the VRRP that a remote link has a failure, thereby causing the downlink apparatus to switch a working channel within the MPLS-TP network. The method includes, when a notification indicating that the master-backup switch has been performed is received from the original backup apparatus of the VRRP, switching to a backup apparatus of the VRRP.

Implementing dual-homed node protection

A method and device for preventing a roaming user terminal from re-authentication are provided. The method includes: when Virtual Local Area Network (VLAN) of a roaming user terminal changes, change information of the roaming user terminal is reported to a Broadband Remote Access Server (BRAS) via an Access Controller (AC) and the BRAS reports modified information of the roaming user terminal to an Authentication, Authorization, Accounting server (AAA server).

Preventing roaming user terminal re-authentication

Examples of the present disclosure provide a dual-homing protection method and device. In the dual-homing protection method, a forwarding item synchronizing channel and a data transfer channel are established between two Provider Edge (PE) devices in a dual-homing node, a Pseudo Wire (PW) and a Label Switched Path (LSP) protection group bearing the PW are established between a network side peer PE device and the two PE devices in the dual-homing node, which are taken as a logical device, so as to implement LSP protection within a network. The present disclosure may enable the protection within a network to be independent of access link protection. Subsequently, the management is simple.

Dual-homing protection

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Beijing, China

Min Yao