LevelOne WHG-505, Руководство пользователя

Страница: 32 / 314

26
IP Address: the IP address of the WAN2 port.
Subnet Mask: the subnet mask of the network WAN2 port connects to.
Default Gateway: a gateway of the network WAN2 port connects to.
Preferred DNS Server: The primary DNS server used by the system.
Alternate DNS Server: The substitute DNS server used by the system. This is an optional field.
Dynamic: It is only applicable for the network environment where a DHCP server is available. Click the Renew
button to get an IP address.
PPPoE: When selecting PPPoE to connect to the network, please set the “User Name”, “Password”.
MTU: Short for Maximum Transmission Unit of a PPPoE frame. The PPPoE protocol allows an Ethernet
frame’s size to be up to 1492 bytes, but some ISP’s network equipments may support a smaller frame size
of than 1492 bytes. In that case, you have to enter a smaller number MTU number to meet the ISP’s
networking requirement.
MSS: Short for Maximum Segment Size for a TCP connection. An end-to-end TCP connection over
PPPoE will consume additional overhead out of each packet. At least 40 bytes are used for the address.
Hence, MSS must be smaller than MTU by at least 40.
Dial on demand function under PPPoE. If this function is enabled, a Maximum Idle Time will be available
for input a value. When the idle time is reached, the system will automatically disconnect itself.