Vigor3220 Series User’s Guide
56
MTU
It means Max Transmit Unit for packet.
TTL
Change the TTL value – Enable or disable the TTL (Time to
Live) for a packet transmitted through Vigor router.
Enable - TTL value will be reduced (-1) when it passess
through Vigor router. It will cause the client, accessing
Internet through Vigor router, be blocked by certain ISP
when TTL value becomes “0”.
Disable – TTL value will not be reduced. Then, when a packet
passes through Vigor router, it will not be cancelled. That is,
the client who sends out the packet will not be blocked by
ISP.
PPP/MP Setup
PPP Authentication – Select PAP only or PAP or CHAP for
PPP.
Idle Timeout – Set the timeout for breaking down the
Internet after passing through the time without any action.
IP Address Assignment
Method (IPCP)
Usually ISP dynamically assigns IP address to you each time
you connect to it and request. In some case, your ISP
provides service to always assign you the same IP address
whenever you request. In this case, you can fill in this IP
address in the Fixed IP field. Please contact your ISP before
you want to use this function.
WAN IP Alias - If you have multiple public IP addresses and
would like to utilize them on the WAN interface, please use
WAN IP Alias. You can set up to 32 public IP addresses other
than the current one you are using. Type the additional WAN
IP address and check the Enable box. Then click OK to exit
the dialog.
Fixed IP – Click Yes to use this function and type in a fixed IP
address in the box of Fixed IP Address.
Default MAC Address – You can use Default MAC Address or
specify another MAC address by typing on the boxes of MAC
Address for the router.
Specify a MAC Address – Type the MAC address for the router
manually.
After finishing all the settings here, please click OK to activate them.
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For static IP mode, you usually receive a fixed public IP address or a public subnet, namely
multiple public IP addresses from your DSL or Cable ISP service providers. In most cases, a
Cable service provider will offer a fixed public IP, while a DSL service provider will offer a
public subnet. If you have a public subnet, you could assign an IP address or many IP address
to the WAN interface.
To use Static or Dynamic IP as the accessing protocol of the internet, please click the Static
or Dynamic IP tab. The following web page will be shown.
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