NB5Plus4/W User Guide

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Idle Timeout:

If there is no activity by the admin user

logged into the modem for the number

of minutes specified in this field, the

user will be required to login again.

Apply:

Click

Apply to save the changes.

WARNING: It is strongly recommended that you change the default username and

password to something unique.

Tools>Update Firmware

To update your NB5Plus4/W’s firmware, browse an update image file or configura

-

tion file and then click the Update Gateway button.

Additionally, you may download your configuration file from the system by clicking

“Get Configuration” so that you can store a backup of your configuration to restore

it at a later date.

Tools>Ping Test

The Ping test allows you to ping local and remote IP addresses to check for connec-

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To edit an existing Bridge Filter Rule, click the radio button adjacent to the Filter

Rule name.

The Rule will then appear in the top half of the Bridge Filter control

screen where it can be edited. When editing is complete, click ‘Add’ to return the

Rule to the list of existing rules.

To delete Bridge Filter Rules, click on the ‘Delete’ tick box; multiple deletions can be

made by shift-clicking Delete tick boxes; Select All will select every rule.

When the

desired selections are made, effect deletion by clicking on Apply.

To save changes, click on Apply.

Hidden Bridge Filter Rules

The Bridge filter table contains three hidden rules. These rules are built into the

Router to ensure the user does not become locked out by entering a rule which

prevents further access to the router.

The first rule allows any and all ARP frames through the system.

The second rule allows all IPv4 frames with the destination Bridge address of the

bridge to go through.

The third rule allows all IPv4 frames with the source MAC address of the bridge to

go through.

TIP:

To find the MAC address of a Windows-based computer, at the DOS prompt

type: ipconfig /all.

Advanced > Multicast

IGMP [=Internet Group Management Protocol] Multicast enables communication

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between a single sender and multiple receivers on a network. It is used when data

needs to be sent from one to many devices. Typical uses might include the updat-

ing of mobile personnel from a home office or the periodic publishing of an online

newsletter. Multicasting provides efficiencies which enable it to use less network

bandwidth than the sending of the same data by other means [e.g. SMTP].

To access Multicasting, click on Advanced>Multicast.

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To enable Multicast, open the multicast screen and select the Enable IGMP Multicast.

If you have multiple connections setup on your modem you will be able to choose

which connection to enable IGMP Multicast for.

Click the Apply button to save the settings.

Advanced > Static Routing

If the Router is required to serve more than one network, you will need to set up a

Static Route between the networks. Static routing can be used to allow users from

one IP domain to access the Internet through the Router in another domain.

A

Static Route provides the defined pathway that network information must travel to

reach the specific host or network which is providing Internet access .

To access the Static Routing controls, click on Advanced> Static Routing.

Configuring Static Routing:

Choose a Connection: presents list of Saved Connections.

Select appropriate con-

nection from list.

The New Destination IP is the address of the remote LAN network or host to which

you want to assign a static route. Enter the IP address of the host for which you

wish to create a static route here. For a standard Class C IP domain, the network

address is the first three fields of the New Destination IP, while the last field should

be 0. The Subnet Mask identifies which portion of an IP address is the network por

-

tion, and which portion is the host portion. For a full Class C Subnet, the Subnet

Mask is 255.255.255.0. The Gateway IP address should be the IP address of the

gateway device that allows for contact between the Gateway and the remote net-

work or host.

Gateway: IP address refers to the IP address of the near device that is to connect

with the remote network or host. If the Modem is fulfilling this function then its IP

address will be entered in this field.

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To save changes, click on Apply.

Advanced>Dynamic Routing

Dynamic Routing makes use of the RIP Protocol to allow the ADSL Router to au-

tomatically adjust to physical changes in the network. The NB5Plus4/W, using the

RIP protocol, will determine the network packet route based on the least number of

hops between the Source and the Destination. The RIP protocol regularly broadcasts

routing information to other Routers on the network and is part of the IP Suite.

To access Dynamic Routing click Advanced>Dynamic Routing.

Option

Description

E°able RIP:

If this box is checked, Dynamic Routing

is enabled.

Protocol:

Choice is dependent upon the network

environment. Most networks support Rip

v1. If RIP v1 is selected, routing data

will be sent in RIP v1 format. If Rip V2 is

selected, routing data will be sent in RIP

v2 format using Subnet Broadcasting. If

Rip V1 Compatible is selected, routing

data will be sent in RIP v2 format using

Multicasting.

E°able Password:

Enable to password protect the Dynamic

Routing settings.

Directio°:

Determines the direction that RIP routes

will be updated.