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DSL-524T ADSL Router Manual
42
Connection Type
Choose between PPPoE LLC, PPPoA LLC or PPPoE VC-Mux, depending
on the instructions of your ISP.
MTU
The Maximum Transmission Unit (MTU) is a link layer restriction on the
maximum number of bytes of data that can be sent in a single transmission.
The default size is 1400 bytes per packet.
MRU
The Maximum Receive Unit (MRU) field indicates the maximum number of
bytes that can be received by the Router. This MRU’s default size is 1492
bytes per packet. Upon initial negotiation with your ISP, the router will tell
the ISP that the amount entered here is the largest packet allowed to be
accepted by the router.
Default Route
Click the corresponding radio button if you wish to enable or disable the
Default Route. The Default Route is used for outgoing packets, which have an
unresolved IP address. If the router is unable to match the destination address
on a received packet with a destination address in the routing table, the router
uses the default route.
NAT
NAT improves network security in effect by hiding the private network
behind one global and visible IP address. NAT address mapping can also be
used to link two IP domains via a LAN-to-LAN connection. Use the pull-
down menu to Enable or Disable NAT on the Router.
Firewall
The Firewall allows the Router to enforce policies to protect against certain
kinds of attacks. To enable the firewall on the Router, use the pull-down
menu and select Enabled.
IP Control
This field allows the user to control the WAN IP address of the router. There
are three choices for the user:
Dynamic IP – Select this option if you wish to have an IP address
automatically assigned to the router.
Unnumbered IP – Select this option if your ISP has assigned a block of IP
addresses for use.
Static IP – Select this option if you know the IP address assigned to the
router. After selecting this option, the user must enter the known Static IP
address in the following field. A Static IP address is used whenever a known
static IP is assigned.
Static IP
This field states the Static IP Address of the Router and can only be
configured when Static IP is chosen in the previous field.
Click Apply to implement the PPPoE settings for the DSL-524T.
Bridge Mode
Selecting this option in the WAN Settings will change your screen to look like the one seen below.
Bridge Mode is for users who have software on their computer or other network device to accept the
connection from your ISP. The Connection Type setting is selected by using the pull-down menu.
The two choices available to the user here are 1483 Bridged IP LLC and 1483 Bridged IP Vc-Mux,
and this correct choice should be provided to you by your ISP.