TP-Link Omada ER8411 VPN Router - Manual (Page 67)

User Guide 58
Configuring Network USB Configuration
Authentication Type Select an authentication type. The default is Auto. Some ISPs require a specific
authentication type, please confirm it with the ISP or keep the default settings.
Auto: If Auto (default), the router automatically determines the authentication
type used by the ISP.
PAP: If PAP (Password Authentication Protocol), the router authenticates
with the peer using two handshakes. Select this option if the ISP requires this
authentication type.
CHAP: If CHAP (Challenge Handshake Authentication Protocol), the router
authenticates with the peer using three handshakes and validates the peer’s
identify periodically. Select this option if the ISP requires this authentication
type.
MTU Size The default MTU (Maximum Transmission Unit) size is 1480 bytes. Do not change
it unless required by the ISP.
Use the Following
DNS Servers
If the ISP provides DNS server IP addresses, select this checkbox and enter the
Primary DNS and Secondary DNS (optional) IP addresses below. Otherwise, the
DNS servers will be assigned dynamically by the ISP.
Primary DNS: Enter the DNS IP address in dotted-decimal notation provided by
the ISP.
Secondary DNS: (Optional) Enter another DNS IP address in dotted-decimal
notation provided by the ISP.