17
Debugging the PFC
Debugging must be carried out after all cables are connected. Follow these
steps to perform debugging:
1.
Use two network cables to connect the external network interface to
NET A and internal network interface to NET B, respectively. Do not
connect the PFC to any device (including the network interface and
USB interface). Then, check the link.
CAUTION:
The sequence for connecting network cables must comply with the
requirement of the user network; otherwise, the link connectivity may
be unavailable. For example, if you used a crossover cable to connect
the external and internal network interfaces before connecting the
PFC, you need to use a crossover cable to connect the external
network interface and NET A and a straight-through cable to connect
NET B and the internal network interface after connecting the PFC.
2.
If the link is normal, use two network cables to connect interface A to
the interface added to the external zone and interface B to the
interface added to the internal zone. Then, restart the device. After the
device is restarted, check the link. The traffic direction should be:
external network interface > NET A > A > interface added to the
external zone > interface added to the internal zone > B > NET B >
internal network interface.
If the link is normal in both step 1 and 2, the hardware installation and cable
connection of PFC are correct.
