- Billion ADSL Modem/Router With Single Ethernet Port User's Manual

(PPPoA and

PPPoE

encapsulation only)

Nailed-Up

Connection

Select Nailed-Up Connection when you want your connection up all the time. The

BIPAC 5100S will try to bring up the connection automatically if it is disconnected.

Connect on

Demand

Select Connect on Demand when you don't want the connection up all the time and

specify an idle time-out in the Max Idle Timeout field.

Max Idle Timeout

Specify an idle time-out in the Max Idle Timeout field when you select Connect on

Demand. The default setting is 0, which means the Internet session will not timeout.

Subnet Mask

(ENET ENCAP

encapsulation only)

Enter a subnet mask in dotted decimal notation.

Refer to the Subnetting appendix in the to calculate a subnet mask If you are

implementing subnetting.

ENET ENCAP

Gateway (ENET

ENCAP

encapsulation only)

You must specify a gateway IP address (supplied by your ISP) when you select ENET

ENCAP in the Encapsulation field.

TCP MSS Option

(PPPoA/PPPoE,

Routing mode only)

This will increase the current MSS limit to the number specified, hence the tweak test

will report Max Packet Size as the specified number plus 40*. The catch is that every

time your PPPoE disconnects and re-connects it will revert back to MSS limit of 1400

(Max packet size of 1440) and needs to be entered after PPPoE connects again. This

function does not work before PPPoE connects.

*Referring to RFC879, the MSS value = MTU - 40, so by limiting the MSS value,

you will get limited MTU value.

Back

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Apply

Click Apply to save the changes.

Cancel

Click Cancel to begin configuring this screen afresh.