When the firewall works in the dual-system hot backup load balancing environment, if the upstream...

Note: When dual-system hot backup load balancing is configured, the upstream and downstream routers are configured with equal-cost routes, and no HRP OSPF cost is required. When the dual-system hot standby network is deployed, the standby firewall automatically adds a COST value when it routes routes to the outside (the default is 65500).