3Com 3CRWDR300A-73 Router Manual PDF (Setup & Configuration Guide)

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Advanced

The Advanced screen allows you to configure detailed settings for your

wireless connection. Please note that you should not change this settings

unless you are an expert user. There are six parameters that you can

configure:

Figure 58

Wireless Advanced Setting Screen

■

Beacon Interval: this represents the amount of time between beacon

transmissions.

■

DTIM Interval: A DTIM (Delivery Traffic Indication Message) is a

countdown mechanism used to inform your wireless clients of the

next window for listening to broadcast and multicast messages.

■

Fragmentation Threshold: this is the maximum size for directed data

packets transmitted. The use of fragmentation can increase the

reliability of frame transmissions. Because of sending smaller frames,

collisions are much less likely to occur.

■

RTS Threshold: RTS stands for Request to Send, this parameter

controls what size data packet the low level RF protocol issues to an

RTS packet.

■

CTS Protection Mode: CTS stands for Clear to Send. CTS Protection

Mode boosts the Router’s ability to intercept 802.11b/ 802.11g

transmissions. Conversely, CTS Protection Mode decreases

performance. Leave this feature disabled unless you encounter severe

communication difficulties between the Router and your wireless

clients.

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Wireless Settings

75

■

AP Isolation Mode: AP Isolation is a function to prevent wireless clients

connected with the device from communicating with one another.

When enabled, this creates a separate virtual network for your

wireless network, each of your wireless client will be in its own virtual

network and will not be able to communicate with each other. You

may want to utilize this feature if you have many guests that

frequently connect to your wireless network.

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Internet Settings

You can configure the settings for your WAN port connection.

ATM PVC

This feature is used to configure the parameters for your Internet

connection. The information necessary to complete these screens should

be obtained from your ISP. Check with your ISP first to find out what type

of connection you should choose.

Figure 59

ATM PVC Screen

You should see the first entry already contains information that’s been

configured using the Wizard in the initial setup. If you want to change

that information or set up other connection, click

Edit.

There are six options available for the connection mode:

■

Disable — To disable the Internet connection function (see

page 77

)

■

PPPoE — PPP over Ethernet, providing routing for multiple PCs

(see

page 77

)

■

PPPoA — PPP over ATM, providing routing for multiple PCs

(see

page 80

)

■

Bridge Mode — RFC1483 Bridged Mode, (see

page 82

)

■

Routing Mode over ATM — RFC1483/2684 routing mode over ATM

(see

page 84

)

■

Dynamic/Fixed IP in 1483 Bridge Mode — Using Dynamic/fixed IP for

WAN connection (see

page 86

)

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Internet Settings

77

Disable

Selecting this option means that you do not want your Router to connect

to the Internet.

Figure 60

Disable Internet Connection Screen

PPPoE

PPP over Ethernet, provides routing for multiple PCs, this mode is often

used for the DSL connection. To configure this function correctly, you

should obtain the information from your ISP.

Figure 61

PPPoE Settings Screen

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1

Select

PPPoE

from the

protocol

drop-down menu.

2

Enter the IP address and Subnet mask information.

3

Enter the user name assigned to you by your ISP in the

Username

field.

And enter the password assigned to you by your ISP in the

Password

field.

Re-enter your password in the

Confirm Password

field.

4

Select

always connected, auto, or manual

from the

Connect type

drop-down menu. If you have a flat rate service charge for Internet

connection, select always connected. If your ISP charges you by the

minute, do not select this mode.

5

If you want your Router to automatically disconnect from the Internet

after a period of inactivity, specify a time in the

Idle Time

field. (Enter a

value of 0 to disable this timeout).

6

Enter the MTU value in the

MTU

field. Do not make changes to this

setting, unless your ISP specifically requires a different setting other than

1454.

7

IPCP is used by PPP protocol to get one IP address from the PPP server.

IPCP subnet function allows you to obtain a subnet (IP address and

netmask), rather than an IP address. Check this box to enable the

function.

8

IPCP Subnet Populate DHCP Server: enable this function to allow the

Router to automatically apply the subnet from IPCP subnet to DHCP

server. Then LAN clients can get the public IP address assigned by ISP,

rather than a private IP address of the local LAN.

9

Check the

Add Default Route

checkbox to set this PVC as the default

route, this is used when you configure more than one PVC for the Router.

10

Enter the VPI/VCI values. Or click

Auto Search

to find out the values. VPI

(Virtual Path Identifier) and VCI (Virtual Circuit Identifier) numbers should

be provided by your ISP.

11

Select the Encapsulation,

VC MUX or LLC

. This information should be

provided by your ISP.

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