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Device HA Pro function activated. When using USB firmware upgrade on
a device HA or in a device HA Pro scenario, make sure you plug the USB
storage to the passive device for firmware upgrade first. After the
passive device has finished firmware upgrading through the USB, plug
the USB storage to the active device for firmware upgrade.
How to Configure DHCP Option 60 – Vendor Class Identifier
The following figure depicts how the ZyWALL/USG uses DHCP option 60. By matching
the VCI strings, a DHCP client can choose one specific DHCP server on the WAN
network. This function is useful when there are several DHCP servers providing different
services in an environment. Clients that need Internet service can be directed to the
DHCP server which provides Internet connection information with the same option 60
string. IPTV clients may relay to another DHCP server which obtains IPTV service
information.
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