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Chapter 7: Using the Wireless-G Ethernet Bridge Web-based Utility

Wireless

Wireless-G Ethernet Bridge with 5-Port Switch

Wireless

Use the

Wireless

screen, shown in Figure 7-14, to customize advanced wireless settings and clone a MAC

address onto the Bridge.

Advanced Wireless

•

Transmission Rate - The default setting is

Auto

. The range is from 1 to 54Mbps.The rate of data transmission

should be set depending on the speed of your wireless network. You can select from a range of transmission

speeds, or you can keep the default setting,

Auto

, to have the Bridge automatically use the fastest possible

data rate and enable the Auto-Fallback feature. Auto-Fallback will negotiate the best possible connection

speed between the Bridge and another wireless-equipped device.

•

Authentication Type - The default setting is

Auto

. The choices are

Auto

,

Open

, and

Shared

. This setting

allows the Bridge to authenticate communication with the wireless devices in your network. With the Shared

key setting, all wireless devices must have the same WEP keys so that the Bridge and the client can

authenticate each other and start transmitting data. With the Open system setting, any device can join a

network without performing any security check. Using the Auto setting, the Bridge will automatically detect

whether a wireless device uses shared key or open system authentication, and then it will transmit data using

the appropriate authentication type.

•

RTS Threshold - This value should remain at its default setting of

2347

. The range is 0-2347 bytes. Should

you encounter inconsistent data flow, only minor modifications are recommended. If a network packet is

smaller than the preset RTS threshold size, the RTS/CTS mechanism will not be enabled. The Router sends

Request to Send (RTS) frames to a particular receiving station and negotiates the sending of a data frame.

After receiving an RTS, the wireless station responds with a Clear to Send (CTS) frame to acknowledge the

right to begin transmission.

•

Fragmentation Threshold - This value should remain at its default setting of

2346

. The range is 256-2346

bytes. It specifies the maximum size for a packet before data is fragmented into multiple packets. If you

experience a high packet error rate, you may slightly increase the Fragmentation Threshold. Setting the

Fragmentation Threshold too low may result in poor network performance. Only minor modifications of this

value are recommended.

MAC Address

•

Cloning Mode - You can clone the MAC address of any network device onto the Bridge. To disable MAC

address cloning, keep the default setting,

Disable

. To use the MAC cloning feature, select

Enable

.

If you have enabled MAC cloning, then select

Auto

if you want to clone the MAC address of the device

Figure 7-14: Wireless Tab

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Chapter 7: Using the Wireless-G Ethernet Bridge Web-based Utility

Wireless

Wireless-G Ethernet Bridge with 5-Port Switch

currently connected to the Bridge’s LAN port. The Bridge will actively scan for a new MAC address to be

cloned whenever you disconnect and re-connect multiple devices to the Bridge through its LAN port. Select

Manual

if you want to specify a MAC address in the

Enter MAC Address

field. This is useful when the Bridge

is connected to multiple devices through the switch.

Click the

Apply

button to save your changes. If your page doesn’t automatically refresh itself, then click the

Refresh

button of your web browser. Click the

Cancel

button to cancel your changes. Click the

Help

button for

additional on-screen information.

Switch Tab

These screens allow you to configure settings for the managed switch feature. The settings in the Switch tabs

should only be modified by advanced users.

Spanning Tree Protocol

This screen allows you to configure the Spanning Tree Protocol settings for the managed switch feature.

Spanning Tree

•

STP - Select

Enable

to enable the Spanning Tree Daemon or

Disable

to disable the Spanning Tree Daemon.

•

Max Age - Enter the timeout period for the information in each Hello message received from others.

•

Hello Time - Enter the Hello message broadcast interval. The Spanning Tree Hello message is used to

exchange the topology information between each Spanning Tree Daemon

•

Forward Delay - The bridge will start from the the block state and then change to listening, learning , then

forwarding. It will only forward packets in the forwarding state. Enter the delay defined by the time spent in

the listening and learning state.

Click the

Apply Global Setting

button to save your settings globally.

•

STP Table - For ports 1 through 6.

Priority - The priority of this port. The smaller the priority value, the higher the priority. If two ports form a

loop, the port with higher priority value will change to block state, thus break the loop.

Figure 7-15: Spanning Tree Protocol Tab

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Chapter 7: Using the Wireless-G Ethernet Bridge Web-based Utility

Wireless

Wireless-G Ethernet Bridge with 5-Port Switch

Cost - The path cost to forward packets from this port, it's usually inversely proportional to the speed of the

port.

State - The STP state determined by the Spanning Tree protocol. They are Blocking, Listening, Learning and

Forwarding. This is determined by the STP Daemon.

Click the

Apply Port Setting

button to save your settings per port. Click the

Cancel

button to cancel your

changes. Click the

Refresh

button to refresh your screen. Click the

Help

button for additional on-screen

information.

QOS

This screen is used to configure the Quality of Service (QOS), Storm Filtering, and Flow Control settings for the

managed switch feature.

•

Global QOS Mode - There are 4 output queues per port with different priority. This QOS setting will let user

choose between a more evenly distributed Weighted Fair Queue or a strict Priority scheme. With Priority

scheme, the packets in the higher priority queue will always be forwarded first. With Weighted Fair Queue, the

switch will forward the packets with a 8:4:2:1 ratio.

•

Diff Serv Map - Select which bit in the packets' diff serv field to map to IP Diff Serv priority.

•

802.1p PRI Map - Select which bit in the packets' 802.1p priority field to map to 802.1p priority.

Click the

Apply Global Setting

button to save your global settings.

•

QOS Port Setting - Ports 1 through 5 are the wired ports. Port 6 is the wireless port.

QOS Priority - Select how to determine the QOS priority of each packet.

IP Diff Serv - It will use the IPv4 Diff Serv/Tos field to determine the QOS priority if the packet is an IP packet.

Otherwise, the lowest priority will be used.

802.1p - It will use the VLAN Priority Field to determine the QOS priority. Otherwise, the lowest priority will be

used.

Critical/High/Medium/Low - This setting will set all packets coming into this port to this priority value. Critical

is the highest and Low is the lowest.

•

Ingress Rate Mode - This is used for rate limiting. We can limit packet rate entering a specific port. This mode

will choose which packets will be limited. The limit will be set in the

Ingress Rate

field.

Figure 7-16: QOS Tab

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Chapter 7: Using the Wireless-G Ethernet Bridge Web-based Utility

Wireless

Wireless-G Ethernet Bridge with 5-Port Switch

•

All Packets - This rate limit will be applied to all packets.

•

Flooded - This rate limit will be applied to

Flooded unicast

and

Multicast and Broadcast

packets.

•

Multicast - This rate limit will be applied to

Multicast and Broadcast

packets.

•

Broadcast - This rate limit will be applied to

Broadcast packets

only.

•

Ingress Rate - This setting allows you to choose the input data rate for a port. Packets exceeding this rate will

be dropped.

•

Egress Rate - This setting let user choose the output data rate for a port. Packets exceeding this rate will be

dropped.

•

Flow Control - When this feature is enabled, the wired LAN ports will exchange control packets with the

connected port before sending packets. If the other end is not able to process more packets , our sending port

will hold the packets. The mechanism will ensure that packets will not be lost on the wire. But it can still

cause congestion in other part of the network, so please use this with caution.

Click the

Apply Port Setting

button to save your settings per port. Click the

Cancel

button to cancel your

changes. Click the

Refresh

button to refresh your screen. Click the

Help

button for additional on-screen

information.

Switch Table

Use this screen to configure the switch address table settings for the managed switch feature, and to add or

delete static address table entries. Global ATU Setting is a global switch address table setting. Address Learning

is used to determine if the switch should automatically learn the mac address for the packets; the default is

enabled. Age Timer is is used to determine the idle time out of each address entry.

•

New Address Entry -Mac Address is the destination mac address. Output Port Vector is the output ports where

the packet should be routed to if there is a mac address match. Note, the packets can be routed to more than

1 port. The static address entry will be locked in the table and does not idle the timeout. To add entries, select

the port’s check box and click the

Add New Entry

button. To delete entries, select the port’s check box and

click the

Delete Selected Entry

button.

•

Static Address Table - This lists the static MAC address entries and the output port vector settings.

•

Address Table Dump - This is a complete dump of the address table, including both the dynamic learned

entries and static entries. If there is a topology change, click the

Flush Table

to button to remove all the

Figure 7-17: Switch Table Tab

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Chapter 7: Using the Wireless-G Ethernet Bridge Web-based Utility

Wireless

Wireless-G Ethernet Bridge with 5-Port Switch

dynamic learned entries to force it to learn again. It will only dump at most 64 entries per page. If there are

already 64 entries, use

Get Next Page

to get more pages.

•

Life Remaining - This is the life remaining before an idle time out. The value is 0-15. If the switch received any

packets with the same destination MAC address, then the life value will reset to 15. If the life value decreases

to 0, then it will be removed from the table. The idle timeout is configured in the Age Timer field.

A static address entry will appear as locked or locked multicast in the address table. An entry might also be

added by the bridge when certain protocol (eg. spanning tree) is enabled. That entry will have a management

subtitle.

VLAN

This screen is used to configure the 802.1q VLAN and port based VLAN feature, and to add and delete individual

802.1q VLAN entries.

Global VLAN Setting

•

Disable - This will disable all VLAN function.

•

802.1q Check - In this 802.1q mode, when a packet comes in, the switch will parse for it's VLAN tag first. If

the packet does not have a VLAN tag, the default VID of the inport will be used as its VLAN ID. If the final VLAN

ID is not listed in the VLAN table, this packet will be dropped. Otherwise, the switch will search the switch

address table for the egress (output) port. Once the egress port is determined, the member option will be

used to determine if the switch will add or remove the tag or drop the packets.

•

802.1q Secure - This is similar to the

802.1q Check

mode. But if the incoming port is not a member of this

VLAN ID, this packet will also be dropped.

•

Port Based - Each port has an outport vector that can be configured below. Packets can only exit the ports

that are enabled in the outport vector.

Click the

Apply Global Setting

button to save your global settings.

Port Based VLAN Setting

•

This is to set the Port Based VLAN Map. For each port, if the output field is checked, then packets are allowed

to exit that port. Packets are not allowed to enter and exit the same port.

Figure 7-18: VLAN Tab

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