117Figure 30 Network diagramIf the address pool is applied to a VPN instance, the VPN instance must exist.To bind the gateways to the DHCP server's MAC address:Step Command Remarks1. Enter system view. system-view N/A2. Enter DHCP address poolview. dhcp server ip-pool pool-name By default, no DHCP addresspool exists.3. Bind the gateways to thedevice's MAC address.gateway-list ip-address&<1-64>export-routeBy default, gateways are notbound to any MAC address.Advertising subnets assigned to clientsThis feature enables the route management module to advertise subnets assigned to DHCP clients.This feature achieves symmetric routing for traffic of the same host.As shown in Figure 31, Router A and Router B act as both the DHCP server and the BRAS device.The BRAS devices send accounting packets to the RADIUS server. To enable the BRAS devices tocollect correct accounting information for each RADIUS user, configure the DHCP server toadvertise subnets assigned to clients. The upstream and downstream traffic of a RADIUS user willpass through the same BRAS device.Figure 31 Network diagramIf the address pool is applied to a VPN instance, the VPN instance must exist.To configure the subnet advertisement feature:...
