(1) The SPN device and the PCE server use the management channel to communicate, so it is necessary to ensure the normal communication between the SPN device and the PCE server's management channel;
(1) SPN devices and PCE servers use management channels to communicate, so it is necessary to ensure that SPN devices and PCE server management channel communication is normal;
(1) The management channel is used for communication between SPN equipment and PCE server, so the communication between SPN equipment and PCE server is normal;<BR>