Zyxel ZyWALL-USG50 Router Manual PDF (Setup & Configuration Guide)

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Chapter 11 Interfaces

ZyWALL USG 50 User’s Guide

236

Interface

Parameters

Egress

Bandwidth

Enter the maximum amount of traffic, in kilobits per second, the

ZyWALL can send through the interface to the network. Allowed

values are 0 - 1048576.

Ingress

Bandwidth

This is reserved for future use.

Enter the maximum amount of traffic, in kilobits per second, the

ZyWALL can receive from the network through the interface. Allowed

values are 0 - 1048576.

MTU

Maximum Transmission Unit. Type the maximum size of each data

packet, in bytes, that can move through this interface. If a larger

packet arrives, the ZyWALL divides it into smaller fragments. Allowed

values are 576 - 1492. Usually, this value is 1492.

Connectivity

Check

The interface can regularly check the connection to the gateway you

specified to make sure it is still available. You specify how often the

interface checks the connection, how long to wait for a response

before the attempt is a failure, and how many consecutive failures are

required before the ZyWALL stops routing to the gateway. The

ZyWALL resumes routing to the gateway the first time the gateway

passes the connectivity check.

Enable

Connectivity

Check

Select this to turn on the connection check.

Check Method

Select the method that the gateway allows.

Select

icmp

to have the ZyWALL regularly ping the gateway you

specify to make sure it is still available.

Select

tcp

to have the ZyWALL regularly perform a TCP handshake

with the gateway you specify to make sure it is still available.

Check Period

Enter the number of seconds between connection check attempts.

Check Timeout

Enter the number of seconds to wait for a response before the

attempt is a failure.

Check Fail

Tolerance

Enter the number of consecutive failures before the ZyWALL stops

routing through the gateway.

Check Default

Gateway

Select this to use the default gateway for the connectivity check.

Check this

address

Select this to specify a domain name or IP address for the

connectivity check. Enter that domain name or IP address in the field

next to it.

Check Port

This field only displays when you set the

Check Method

to

tcp

.

Specify the port number to use for a TCP connectivity check.

Related Setting

Configure

WAN TRUNK

Click

WAN TRUNK

to go to a screen where you can configure the

interface as part of a WAN trunk for load balancing.

Policy Route

Click

Policy Route

to go to the screen where you can manually

configure a policy route to associate traffic with this interface.

Table 58

Configuration > Network > Interface > PPP > Add (continued)

LABEL

DESCRIPTION

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Chapter 11 Interfaces

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11.5

Cellular Configuration Screen (3G)

3G (Third Generation) is a digital, packet-switched wireless technology. Bandwidth

usage is optimized as multiple users share the same channel and bandwidth is

only allocated to users when they send data. It allows fast transfer of voice and

non-voice data and provides broadband Internet access to mobile devices.

Note: The actual data rate you obtain varies depending on the 3G card you use, the

signal strength to the service provider’s base station, and so on.

You can configure how the ZyWALL’s 3G device connects to a network (refer to

Section 11.5.1 on page 239

):

•

You can set the 3G device to connect only to the home network, which is the

network to which you are originally subscribed.

•

You can set the 3G device to connect to other networks if the signal strength of

the home network is too low or it is unavailable.

OK

Click

OK

to save your changes back to the ZyWALL.

Cancel

Click

Cancel

to exit this screen without saving.

Table 58

Configuration > Network > Interface > PPP > Add (continued)

LABEL

DESCRIPTION

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Chapter 11 Interfaces

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Aside from selecting the 3G network, the 3G card may also select an available

2.5G or 2.75G network automatically. See the following table for a comparison

between 2G, 2.5G, 2.75G and 3G of wireless technologies.

To change your 3G WAN settings, click

Configuration > Network > Interface

>

Cellular

.

Note: Install (or connect) a compatible 3G USB to use a cellular connection. See

Chapter 52 on page 775

for details.

Note: The WAN IP addresses of a ZyWALL with multiple WAN interfaces must be on

different subnets.

Table 59

2G, 2.5G, 2.75G, 3G and 3.5G Wireless Technologies

NAME

TYPE

MOBILE PHONE AND DATA STANDARDS

DATA

SPEED

GSM-BASED

CDMA-BASED

2G

Circuit-

switched

GSM (Global System for Mobile

Communications), Personal

Handy-phone System (PHS), etc.

Interim Standard 95 (IS-95), the

first CDMA-based digital cellular

standard pioneered by Qualcomm.

The brand name for IS-95 is

cdmaOne. IS-95 is also known as

TIA-EIA-95.

Slow

Fast

2.5G

Packet-

switched

GPRS (General Packet Radio

Services), High-Speed Circuit-

Switched Data (HSCSD), etc.

CDMA2000 is a hybrid 2.5G / 3G

protocol of mobile

telecommunications standards that

use CDMA, a multiple access scheme

for digital radio.

CDMA2000 1xRTT (1 times Radio

Transmission Technology) is the core

CDMA2000 wireless air interface

standard. It is also known as 1x,

1xRTT, or IS-2000 and considered to

be a 2.5G or 2.75G technology.

2.75G

Packet-

switched

Enhanced Data rates for GSM

Evolution (EDGE), Enhanced GPRS

(EGPRS), etc.

3G

Packet-

switched

UMTS (Universal Mobile

Telecommunications System), a

third-generation (3G) wireless

standard defined in ITU

A

specification, is sometimes

marketed as 3GSM. The UMTS

uses GSM infrastructures and W-

CDMA (Wideband Code Division

Multiple Access) as the air

interface.

CDMA2000 EV-DO (Evolution-Data

Optimized, originally 1x Evolution-

Data Only), also referred to as EV-

DO, EVDO, or just EV, is an evolution

of CDMA2000 1xRTT and enables

high-speed wireless connectivity. It

is also denoted as IS-856 or High

Data Rate (HDR).

3.5G

Packet-

switched

HSDPA (High-Speed Downlink

Packet Access) is a mobile

telephony protocol, used for

UMTS-based 3G networks and

allows for higher data transfer

speeds.

A.

The International Telecommunication Union (ITU) is an international organization within which governments and the private

sector coordinate global telecom networks and services.

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Chapter 11 Interfaces

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239

Figure 158

Configuration > Network > Interface > Cellular

The following table describes the labels in this screen.

11.5.1

Cellular Add/Edit Screen

To change your 3G settings, click

Configuration > Network > Interface

>

Cellular > Add

(or

Edit

).

In the pop-up window that displays, select the slot that

you want to configure. The following screen displays.

Table 60

Configuration > Network > Interface > Cellular

LABEL

DESCRIPTION

Add

Click this to create a new cellular interface.

Edit

Double-click an entry or select it and click

Edit

to open a screen where

you can modify the entry’s settings.

Remove

To remove an entry, select it and click

Remove

. The ZyWALL confirms

you want to remove it before doing so.

Activate

To turn on an entry, select it and click

Activate

.

Inactivate

To turn off an entry, select it and click

Inactivate

.

Connect

To connect an interface, select it and click

Connect

. You might use this

in testing the interface or to manually establish the connection.

Disconnect

To disconnect an interface, select it and click

Disconnect

. You might

use this in testing the interface.

Object

References

Select an entry and click

Object Reference

s to open a screen that

shows which settings use the entry. See

Section 11.3.2 on page 230

for

an example.

#

This field is a sequential value, and it is not associated with any

interface.

Status

The activate (light bulb) icon is lit when the entry is active and dimmed

when the entry is inactive.

The connect icon is lit when the interface is connected and dimmed

when it is disconnected.

Name

This field displays the name of the interface.

Extension Slot

This field displays where the entry’s cellular card is located.

Connected

Device

This field displays the name of the cellular card.

ISP Settings

This field displays the profile of ISP settings that this cellular interface is

set to use.

Apply

Click

Apply

to save your changes back to the ZyWALL.

Reset

Click

Reset

to return the screen to its last-saved settings.

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Chapter 11 Interfaces

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240

Figure 159

Configuration > Network > Interface > Cellular > Add

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