System Configuration

5-12

•

LAN IP Address

– Valid IP addresses consist of four decimal numbers, 0 to 255,

separated by periods. The default setting is 192.168.2.1.

•

Subnet Mask

– Indicate the local subnet mask. (Default: 255.255.255.0.)

•

MAC Address

– The shared physical layer address for the wireless AP/Router’s

LAN ports.

•

DHCP Server

– Select this option to obtain the IP settings for the access point from

a DHCP (Dynamic Host Configuration Protocol) server. The IP address, subnet

mask, default gateway, and Domain Name Server (DNS) address are dynamically

assigned to the access point by the network DHCP server. (Options: Enable/

Disable)

•

Start/End IP Address

– Specify the start and end IP addresses of a range that the

DHCP server can allocate to DHCP clients. Note that the address pool range is

always in the same subnet as the unit’s IP setting. The maximum clients that the

unit can support is 253.

•

Primary DNS Server

– The IP address of Domain Name Servers on the network.

A DNS maps numerical IP addresses to domain names and can be used to identify

network hosts by familiar names instead of the IP addresses.

•

Secondary DNS Server

– The IP address of the Secondary Domain Name Server

on the network.

•

Default Gateway

– The default gateway is the IP address of the router for the

wireless AP/Router, which is used if the requested destination address is not on

the local subnet.

•

Lease Time

– Select a time limit for the use of an IP address from the IP pool.

When the time limit expires, the client has to request a new IP address. The lease

time is expressed in seconds. (Default: 86400 seconds; Range: 60~864000

seconds)

•

Statically Assigned

– Up to three devices with specific MAC addresses can be

assigned static IP addresses. That is, the DHCP server always assigns these

devices the same IP addresses.

•

LLTD

– Link Layer Topology Discovery (LLTD) is a Microsoft proprietary discovery

protocol which can be used for both wired and wireless networks. (Options:

Disable/Enable, Default: Disable)

•

IGMP Proxy

– Enables IGMP proxy on the wireless AP/Router. (Options: Disable/

Enable, Default: Disable)

•

UPNP

– Allows the device to advertise its UPnP capabilities. (Default: Disable)

•

Router Advertisement

– Enables the sending and receiving of routing

advertisements to discover the existence of neighboring routers. (Options: Disable/

Enable, Default: Disable)

•

PPPoE Relay

– When enabled, the wireless AP/Router will forward PPPoE

messages to clients. Clients are then able to connect to the PPPoE service through

the WAN port. (Options: Disable/Enable, Default: Disable)

Internet Settings

5-13

•

DNS Proxy

– Enables DNS proxy on the LAN port. DNS Proxy receives DNS

queries from the local network and forwards them to an Internet DNS server.

(Default: Disable)

Advanced Routing

Routing setup allows a manual method to set up routing between networks. The

network administrator configures static routes by entering routes directly into the

routing table. Static routing has the advantage of being predictable and easy to

configure.

Advanced Routing Settings

This screen is used to manually configure static routes to other IP networks,

subnetworks, or hosts. Click “Internet Settings” followed by “Advanced Routing”.

(Maximum 32 entries are allowed.)

Figure 5-10.

Advanced Route (Gateway Mode)

•

Destination

– A destination network or specific host to which packets can be

routed.

•

Type

– Defines the type of destination. (Options: Host/Net, Default: Host)

•

Gateway

– The IP address of the router at the next hop to which matching frames

are forwarded.

•

Interface

– The selected interface to which a static routing subnet is to be applied.

• Comment

– Enters a useful comment to help identify this route.

System Configuration

5-14

Routing Table

This page displays the information necessary to forward a packet along the best

path toward its destination. Each packet contains information about its origin and

destination. When a packet is received, a network device examines the packet and

matches it to the routing table entry providing the best match for its destination. The

table then provides the device with instructions for sending the packet to the next

hop on its route across the network.

Note:

The Routing Table is only available when the wireless AP/Router is set to

Gateway Mode.

Figure 5-11.

Routing Table (Gateway Mode)

• Destination

– Displays all destination networks or specific hosts to which packets

can be routed.

• Netmask

– Displays the subnetwork associated with the destination.

•

Gateway

– Displays the IP address of the router at the next hop to which matching

frames are forwarded.

•

Flags

– Possible flags identify as below

-

0: reject route

-

1: route is up

-

3: route is up, use gateway

-

5: route is up, target is a host

-

7: route is up, use gateway, target is a host

•

Metric

– A number used to indicate the cost of the route so that the best route,

among potentially multiple routes to the same destination, can be selected.

•

Ref

– Number of references to this route.

•

Use

– Count of lookups for the route.

•

Interface

– Interface to which packets for this route will be sent.

• Comment

– Displays a useful comment to identify the routing rules.

Internet Settings

5-15

Dynamic Route

The wireless AP/Router supports RIP 1 and RIP 2 dynamic routing protocol. Routing

Information Protocol (RIP) is the most widely used method for dynamically

maintaining routing tables. RIP uses a distance vector-based approach to routing.

Routes are chosen to minimize the distance vector, or hop count, which serves as a

rough estimate of transmission cost. Each router broadcasts its advertisement every

30 seconds, together with any updates to its routing table. This allows all routers on

the network to build consistent tables of next hop links which lead to relevant

subnets.

Figure 5-12.

Dynamic Route (Gateway Mode)

• RIP

– Enables or disable the RIP protocol for the WAN or LAN interface. (Options:

Disable/v1/v2, Default: Disable)

QoS Setting

The QoS setting page is used to configure Quality of Service (QoS) for Traffic

Prioritization and Bandwidth Management. Quality of Service (QoS) provides users

the control over which type of outgoing data traffic is given priority by the router. The

throughput rate of the upload data passed through the wireless AP/Router can be

throttled. Click on “Internet Settings” followed by “QoS”.

Figure 5-13.

QoS Settings (Gateway Mode)

Bandwidth QoS Setting

— The maximum upload speed of the Internet connection

on the WAN port.

•

Quality of Service

– Enables the QoS. (Default: Enable)

•

Upload Bandwidth

– Sets the maximum upload bandwidth. (Default: user

defined)

System Configuration

5-16

ALG

The application gateway settings provide a filter for certain protocol data (such as

FTP and SIP) to pass through the wireless AP/Router NAT and firewall restrictions.

Figure 5-14.

ALG Settings

•

FTP Support

– Allows FTP packets to pass through the wireless AP/Router.

•

TFTP Support

– Allows TFTP packets to pass through the wireless AP/Router.

•

H.323 Support

– Allows H.323 packets to pass through the wireless AP/Router to

support audio, data and video conferencing for teleconferencing.

•

SIP Support

– Allows SIP packets to pass through the wireless AP/Router.

•

VPN-passthrough Support (L2TP, IPSEC, PPTP)

– Allows L2TP, IPSec, and

PPTP packets to pass through the wireless AP/Router.

Wireless Settings

The IEEE 802.11n interfaces include configuration options for radio signal

characteristics and wireless security features.

The wireless AP/Router can operate in five modes, mixed 802.11b/g/n, mixed

802.11b/g, 802.11b only and 802.11g only. Also note that 802.11g is backward

compatible with 802.11b, and 802.11n is backward compatible with both 802.11b/g

at slower data transmit rates.