This topic explains why connection failures occur between a Smart Access Gateway (SAG) device and a switch, and provides solutions.

Symptoms

  • You cannot ping the ports of the SAG device through a switch.
  • On the Port Alloc page of the web console, the indicators are red.
  • When the Open Shortest Path First (OSPF) protocol is configured for dynamic routing, the indicators are red on the configuration page of the web console.
  • On the Home page of the web console, no route type is configured for the target CIDR block.

Causes

  • The cable that connects the SAG device to the switch is faulty.
  • The port of the switch is disabled.
  • IP address configurations of the SAG device and the switch are incorrect.

Solutions

  1. Check whether the cable that connects the SAG device and the switch is faulty. Make sure that the indicators of the ports are on.
  2. Check whether the port of the switch is enabled.
  3. Check whether the IP address of the switch port and the SAG device port fall into the same CIDR block.
  4. If the OSPF protocol is configured, check whether the configurations of the OSPF port and the SAG device port are the same.

    The parameters include: Area ID, Hello Time, Dead Time, Authentication Type, Router ID, Area Type. Make sure that all directly connected CIDR blocks have advertised routes.