Both the N+1 backup and the dual-link cold backup support the link switchback function. To avoid frequent network switchovers, N+1 backup and dual-link cold backup are waiting for 20 heartbeat cycles by default. Switch back operation.
The device receives an exception notification when the primary and backup service packets sent by the peer are not received within the time interval between the primary and secondary service packets and the number of retransmissions. Prepare to rebuild the primary and backup backup channels.
When the VRRP hot backup is configured, the active and standby ACs can be hot standby through Layer 3 interworking on two different Layer 2 networks.
According to different scenarios, the Layer 3 roaming of the direct forwarding network can set the AC or AP as the home agent. When the AP is set as the home agent, tunnel forwarding needs to be established between the APs before and after roaming.
Regarding the role of each role in the Portal authentication architecture, is the following description correct?