25• Stateful failover can be implemented between only two devices. Use a network cable to directlyconnect the failover interfaces. No intermediary device (such as a router, a switch, or a hub) isallowed between the interfaces.For more information about stateful failover, see the configuration guide of the firewall.Figure 21 Network diagram for stateful failoverConnecting Ethernet cablesConnecting a copper Ethernet portYou can use category-5 or above twisted pair cables to connect the 10Base-T/100Base-TX/1000Base-Tports on the firewall to the network. These ports use RJ-45 connectors and support MDI/MDI-Xauto-sensing. For more information about twisted pair cables, see "Ethernet twisted pair cable."To connect a 10Base-T/100Base-TX/1000Base-T port to a peer device:1. Plug one end of a twisted pair cable into the port.2. Plug the other end of the twisted pair cable into the RJ-45 Ethernet port of the peer device.3. Examine the port LED status.For more information about the LED status, see "Appendix B LEDs."After you connect the firewall to the network, execute the ping or tracert command to test networkconnectivity. For more information about the commands, see the command reference of the firewall.Connecting a fiber portWARNING!Do not stare into any fiber port when you connect an optical fiber. The laser light emitted from the opticalfiber may hurt your eyes.CAUTION:• Be sure to install the dust cover if the fiber port is not connected to a fiber connector.• Never bend or curve a fiber when connecting it. The bend radius must be at least 10 cm (3.94 in).• Keep the end of the fiber clean.• Make sure the Tx and Rx ends of the SFP/XFP transceiver module are correctly connected.Before you connect a fiber port, install a transceiver module to the firewall and then install the fiberconnector to the transceiver module. Transceiver modules are user supplied.The F5000-A5 has SFP and XFP fiber ports, which only support LC connectors. The procedures forconnecting SFP and XFP fiber ports are similar. The following uses the SFP port on an NSQ1GT8C40 asan example.
