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5.7.3 What Could Go Wrong?
1 If the devices in the Local Network cannot reach the USG, Make
sure that DHCP Snooping is configured on the Switch, first.
2 If the devices in the Local Network still cannot reach the USG
after configuring and enabling DHCP Snooping, wait for a few
minutes before attempting to reach the USG again. ARP
Inspection sends the device’s MAC address into a filter table. This
device must wait until the entry expires, indicated by the “Expiry
(sec)” column.
3 If some of the devices are not able to reach the USG, the
following problems may have occurred:
a. Make sure that the port connected to the USG or other
internal devices are trusted ports.
b. Make sure that all the clients in the network renews their DHCP
configurations incase the Switch has undergone reboot.
c. Make sure that the DHCP server’s pool has not run out of IP
addresses.
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