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AC6605 Access Controller V200R001C00 Dual-Link Backup White Paper Issue Date 2012-05-30 HUAWEI TECHNOLOGIES CO., LTD.
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Notice The purchased products, services and features are stipulated by the contract made between Huawei and the customer. All or part of the products, services and features described in this document may not be within the purchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information, and recommendations in this document are provided "AS IS"...
About This Document About This Document Purpose This document describes the dual-link backup technology of the AC6605. The dual-link backup technology provides high reliability between important network nodes to ensure service availability. This document covers the mechanism and networking modes of dual-link backup supported by the AC6605, and provides configuration examples for typical dual-link backup applications.
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1 Dual-Link Backup Obtaining IP Addresses on a Layer 2 Network An AP broadcasts a DHCP Discovery packet with Option 60 as Huawei AP. The two ACs receive the DHCP Discovery packet and both reply with a DHCP Offer packet.
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Configure the Option 43 field with the IP addresses of the active and standby ACs, and configure the Option 60 field to identify Huawei APs. Option 43 and Option 60 are optional in Layer 2 networking. Configuration on the aggregation switch is as follows: Configure VLAN 3010 and VLAN 3931, and assign IP address 30.30.30.5 to VLANIF...