ZyXEL P-660R-Tx v2 Support Notes

P-660R-Tx v2 Series

ADSL2+ Router

Support Notes

Version3.40

Jan. 2006

P-660R-Tx v2 Series Support Notes

FAQ.................................................................................................................4

ZyNOS FAQ.................................................................................................4

1. What is ZyNOS?...................................................................................4

2. How do I access the P-660R-Tx v2 Command Line Interface (CLI)? ...4

3. How do I update the firmware and configuration file?...........................4

4. How do I upgrade/backup the ZyNOS firmware by using TFTP client

program via LAN?.....................................................................................4

5. How do I restore P-660R-Tx v2 configurations by using TFTP client

program via LAN?.....................................................................................4

6. What should I do if I forget the system password? ...............................5

7. How to use the

Reset button?...............................................................5

8. What is SUA? When should I use SUA? ..............................................5

9. What is the difference between SUA and Multi-NAT? ..........................6

10. Is it possible to access a server running behind SUA from the outside

Internet? If possible, how?........................................................................6

11. When do I need Multi-NAT?................................................................6

12. What IP/Port mapping does Multi-NAT support ?...............................6

13. How many network users can the SUA/NAT support? .......................7

14. What are Device filters and Protocol filters?.......................................8

15. How can I protect against IP spoofing attacks?..................................8

General FAQ .............................................................................................10

1. How can I manage P-660R-Tx v2?.....................................................10

2. What is the default password to loging web configurator?..................10

3. How do I know the P-660R-Tx v2's WAN IP address assigned by the

ISP?........................................................................................................10

4. What is the micro filter or splitter used for?.........................................10

5. The P-660R-Tx v2 supports Bridge and Router mode, what's the

difference between them? ......................................................................10

6. How do I know I am using PPPoE?....................................................11

7. Why does my provider use PPPoE?...................................................11

8. What is DDNS?...................................................................................11

9. When do I need DDNS service?......................................................... 11

10. What is DDNS wildcard? Does the P-660R-Tx v2 support DDNS

wildcard? ................................................................................................12

11. Can the P-660R-Tx v2's SUA handle IPSec packets sent by the IPSec

gateway? ................................................................................................12

12. How do I setup my P-660R-Tx v2 for routing IPSec packets over SUA?

................................................................................................................12

13. What is Traffic Shaping?...................................................................13

14. What do the parameters (PCR, SCR, MBS) mean?.........................13

15.Why do we perform traffic shaping in the P-660R-Tx v2 ?.................13

ADSL FAQ.................................................................................................14

1. How does ADSL compare to Cable modems?....................................14

2. What is the expected throughput?......................................................14

P-660R-Tx v2 Series Support Notes

3. What is the micro filter used for? ........................................................14

4. How do I know the ADSL line is up?...................................................14

5. How does the P-660R-Tx v2 work on a noisy ADSL?.......................14

6. Does the VC-based multiplexing perform better than the LLC-based

multiplexing? ...........................................................................................15

7. How do I know the details of my ADSL line statistics?........................15

8. What are the signaling pins of the ADSL connector?..........................15

Application Notes ........................................................................................16

General Application Notes ......................................................................16

1. Internet Access Using P-660R-Tx v2 under Bridge mode ..................16

2. Internet Access Using P-660R-Tx v2 under Router mode..................19

Set up your workstation............................................................20

Set up your P-660R-Tx v2........................................................20

3. Setup the P-660R-Tx v2 as a DHCP Relay ........................................21

4. SUA Notes..........................................................................................22

Configure an Internal Server Behind SUA................................26

Configure a PPTP server behind SUA......................................27

5. Using Multi-NAT..................................................................................31

Configure NAT..........................................................................32

NAT Server Sets.......................................................................37

6. Using the Dynamic DNS (DDNS)........................................................45

7. Network Management Using SNMP...................................................47

8. Using IP Alias .....................................................................................50

9. Using IP Policy Routing ......................................................................54

10. Using Call Scheduling.......................................................................58

11. Using IP Multicast.............................................................................61

12. Using Zero-Configuration..................................................................61

Support Tool.................................................................................................65

1. LAN/WAN Packet Trace.........................................................................65

Online Trace...........................................................................................65

Offline Trace...........................................................................................67

Capture the detailed logs by Hyper Terminal　 ......................................68

2. Firmware/Configurations Uploading and Downloading using TFTP.......70

　Using TFTP client software.................................................................70

Using TFTP command on Windows NT　 ..............................................72

Using TFTP command on UNIX　

..........................................................72

3. Using FTP to Upload the Firmware and Configuration Files ..................73

CI Command Reference ..............................................................................76

P-660R-Tx v2 Series Support Notes

FAQ

ZyNOS FAQ

1. What is ZyNOS?

ZyNOS is ZyXEL's proprietary Network Operating System. It is the platform on all Prestige routers that delivers network services and applications. It is designed in a modular fashion so it is easy for developers to add new features. New ZyNOS software upgrades can be easily downloaded from our FTP sites as they become available.

2. How do I access the P-660R-Tx v2 Command Line Interface (CLI)?

You can access the P-660R-Tx v2 Command Line Interface via telnet.

3. How do I update the firmware and configuration file?

You can upload the firmware and configuration file to P-660R-Tx v2 from Web Configurator, or using FTP/TFTP client software. You CAN NOT upload the firmware and configuration file via Telnet because the Telnet connection will be dropped during uploading the firmware. Please do not power off the router right after the FTP or TFTP uploading is finished, the router will upload the firmware to its flash at this moment.

4. How do I upgrade/backup the ZyNOS firmware by using TFTP client program via LAN?

The Prestige allows you to transfer the firmware to Prestige by using TFTP program via LAN. The procedure for uploading ZyNOS via TFTP is as follows.

a. Use the TELNET client program in your PC to login to your Prestige. b. Enter CI command 'sys stdio 0' in menu 24.8 to disable console idle

timeout

c. To upgrade firmware, use TFTP client program to put firmware in file

'ras' in the Prestige. After data transfer is finished, the Prestige will program the upgraded firmware into FLASH ROM and reboot itself.

d. To backup your firmware, use the TFTP client program to get file 'ras'

from the Prestige.

5. How do I restore P-660R-Tx v2 configurations by using TFTP client program via LAN?

a. Use the TELNET client program in your PC to login to your Prestige.

P-660R-Tx v2 Series Support Notes

b. Enter CI command 'sys stdio 0' in CLI to disable Stdio idle timeout. c. To backup the configurations, use TFTP client program to get file

'rom-0' from the Prestige.

d. To restore the configurations, use the TFTP client program to put your

configuration in file rom-0 in the Prestige.

6. What should I do if I forget the system password?

In case you forget the system password, you can erase the current configuration and restore factory defaults this way:

Use the RESET button on the rear panel of P-660R-Tx v2 to reset the router. After the router is reset, the LAN IP address and the password will be reset to

'192.168.1.1' and '1234'.

7. How to use the Reset button?

a. Turn your Prestige off and then on. Make sure the SYS led is on (not

blinking)

b. Press the RESET button for one second and then release it, the

P-660R-Tx v2 will reboot.

c. Press the RESET button for five seconds and then release it. If the SYS

LED begins to blink, the defaults have been restored and the Prestige restarts.

8. What is SUA? When should I use SUA?

SUA (Single User Account) is a unique feature supported by Prestige router which allows multiple people to access Internet concurrently for the cost of a single user account.

When Prestige acting as SUA receives a packet from a local client destined for the outside Internet, it replaces the source address in the IP packet header with its own address and the source port in the TCP or UDP header with another value chosen out of a local pool. It then recomputes the appropriate header checksums and forwards the packet to the Internet as if it is originated from Prestige using the IP address assigned by ISP. When reply packets from the external Internet are received by Prestige, the original IP source address and TCP/UDP source port numbers are written into the destination fields of the packet (since it is now moving in the opposite direction), the checksums are recomputed, and the packet is delivered to its true destination. This is because SUA keeps a table of the IP addresses and port numbers of the local systems currently using it.

P-660R-Tx v2 Series Support Notes

9. What is the difference between SUA and Multi-NAT?

SUA (Single User Account) in previous ZyNOS versions is a NAT set with 2 rules, Many-to-One and Server. The P-660R-Tx v2 now has Full Feature NAT support to map global IP addresses to local IP addresses of clients or servers. With multiple global IP addresses, multiple severs of the same type (e.g., FTP servers) are allowed on the LAN for outside access. In previous ZyNOS versions that supported SUA 'visible' servers had to be of different types. The P-660R-Tx v2 supports NAT sets on a remote node basis. They are reusable, but only one set is allowed for each remote node. The P-660R-Tx v2 supports 8 sets since there are 8 remote node. The default SUA (Read Only) Set in menu 15.1.255 is a convenient, pre-configured, read only, Many-to-One mapping set, sufficient for most purposes and helpful to people already familiar with SUA in previous ZyNOS versions.

10. Is it possible to access a server running behind SUA from the outside Internet? If possible, how?

Yes, it is possible because P-660R-Tx v2 delivers the packet to the local server by looking up to a SUA server table. Therefore, to make a local server accessible to the outside users, the port number and the inside IP address of the server must be configured inWeb Configurator, Advanced Setup -> NAT

-> Edit NAT/SUA Server Set.

11. When do I need Multi-NAT

• Make local server accessible from outside Internet

When NAT is enabled the local computers are not accessible from outside. You can use Multi-NAT to make an internal server accessible from outside.

• Support Non-NAT Friendly Applications

Some servers providing Internet applications such as some mIRC servers do not allow users to login using the same IP address. Thus, users on the same network can not login to the same server simultaneously. In this case it is better to use Many-to-Many No Overload or One-to-One NAT mapping types, thus each user login to the server using a unique global IP address.

12. What IP/Port mapping does Multi-NAT support

NAT supports five types of IP/port mapping. They are: One to One, Many to One, Many to Many Overload, Many to Many No Overload and Server. The details of the mapping between ILA and IGA are described as below. Here we define the local IP addresses as the Internal Local Addresses (ILA) and the global IP addresses as the Inside Global Address (IGA).

• One to One

P-660R-Tx v2 Series Support Notes

In One-to-One mode, the P-660R-Tx v2 maps one ILA to one IGA.

• Many to One In Many-to-One mode, the P-660R-Tx v2 maps multiple ILA to one IGA. This is equivalent to SUA (i.e., PAT, port address translation), ZyXEL's Single User Account feature that previous ZyNOS routers supported (the SUA only option in today's routers).

• Many to Many Overload In Many-to-Many Overload mode, the P-660R-Tx v2 maps the multiple ILA to shared IGA.

• Many One-to-One In Many One-to-One mode, the P-660R-Tx v2 maps each ILA to unique IGA.

• Server In Server mode, the P-660R-Tx v2 maps multiple inside servers to one global IP address. This allows us to specify multiple servers of different types behind the NAT for outside access. Note, if you want to map each server to one unique IGA please use the One-to-One mode.

The following table summarizes these types.

NAT Type IP Mapping One-to-One ILA1<--->IGA1

Many-to-One (SUA/PAT)

ILA1<--->IGA1 ILA2<--->IGA1 ...

Many-to-Many Overload

ILA1<--->IGA1 ILA2<--->IGA2 ILA3<--->IGA1 ILA4<--->IGA2 ...

Many

One-to-One

ILA1<--->IGA1 ILA2<--->IGA2 ILA3<--->IGA3 ILA4<--->IGA4 ...

Server

Server 1 IP<--->IGA1 Server 2 IP<--->IGA1

13. How many network users can the SUA/NAT support?

The Prestige does not limit the number of the users but the number of the NAT sessions. The P-660R-Tx v2 supports 1024 sessions that you can use the ‘ip nat session’ in CLI to see. You can also use 'ip nat iface wanif0 st'

T command

to view the current active sessions.

P-660R-Tx v2 Series Support Notes

14. What are Device filters and Protocol filters?

In ZyNOS, the filters have been separated into two groups. One group is called 'device filter group', and the other is called 'protocol filter group'. Generic filters belong to the 'device filter group', TCP/IP and IPX filters belong to the 'protocol filter group'. You can configure the filter rule in CLI.

Note: In ZyNOS, you can not mix different filter groups in the same filter set.

15. How can I protect against IP spoofing attacks?

The Prestige's filter sets provide a means to protect against IP spoofing attacks. The basic scheme is as follows:

For the input data filter:

• Deny packets from the outside that claim to be from the inside

• Allow everything that is not spoofing us

Filter rule setup:

• Filter type =TCP/IP Filter Rule

• Active =Yes

• Source IP Addr =a.b.c.d

• Source IP Mask =w.x.y.z

• Action Matched =Drop

• Action Not Matched =Forward

Where a.b.c.d is an IP address on your local network and w.x.y.z is your netmask:

For the output data filters:

• Deny bounceback packet

• Allow packets that originate from us

Filter rule setup:

• Filter Type =TCP/IP Filter Rule

• Active =Yes

• Destination IP Addr =a.b.c.d

• Destination IP Mask =w.x.y.z

• Action Matched =Drop

• Action No Matched =Forward

P-660R-Tx v2 Series Support Notes

Where a.b.c.d is an IP address on your local network and w.x.y.z is your netmask.

P-660R-Tx v2 Series Support Notes

General FAQ

1. How can I manage P-660R-Tx v2?

 Web configurator  CLI (Command Line Interface)  Telnet remote management  TFTP (Trivial File Transfer Protocol) and FTP firmware upgrade and

configuration backup and restore

2. What is the default password to loging web configurator?

The default password is '1234'. You can change the password when login to web configurator in the Advanced Setup->Password.

Please record your new password whenever you change it. The system will lock you out if you have forgotten your password.

3. How do I know the P-660R-Tx v2's WAN IP address assigned by the ISP?

You can view "My WAN IP <from ISP> : 200.1.1.1" shown in Web Configurator, Maintenance -> System Status -> WAN Information to check this IP address.

4. What is the micro filter or splitter used for

Generally, the voice band uses the lower frequency ranging from 0 to 4KHz, while ADSL data transmission uses the higher frequency. The micro filter acts as a low-pass filter for your telephone set to ensure that ADSL transmissions do not interfere with your voice transmissions. For the details about how to connect the micro filter please refer to the user's manual.

5. The P-660R-Tx v2 supports Bridge and Router mode, what's the difference between them?

When the ISP limits some specific computers to access Internet, that means only the traffic to/from these computers will be forwarded and the other will be filtered. In this case, we use bridge mode which works as an ADSL modem to connect to the ISP. The ISP will generally give one Internet account and limit only one computer to access the Internet.

For most Internet users having multiple computers want to share an Internet account for Internet access, they have to add another Internet sharing device,

P-660R-Tx v2 Series Support Notes

like a router. In this case, we use the router mode which works as a general Router plus an ADSL Modem.

6. How do I know I am using PPPoE? PPPoE requires a user account to login to the provider's server. If you need to

configure a user name and password on your computer to connect to the ISP you are probably using PPPoE. If you are simply connected to the Internet when you turn on your computer, you probably are not. You can also check your ISP or the information sheet given by the ISP. Please choose PPPoE as the encapsulation type in the P-660R-Tx v2 if the ISP uses PPPoE.

7. Why does my provider use PPPoE?

PPPoE emulates a familiar Dial-Up connection. It allows your ISP to provide services using their existing network configuration over the broadband connections. Besides, PPPoE supports a broad range of existing applications and service including authentication, accounting, secure access and configuration management.

8. What is DDNS? The Dynamic DNS service allows you to alias a dynamic IP address to a static

hostname, allowing your computer to be more easily accessed from various locations on the Internet. To use the service, you must first apply an account from several free Web servers such as http://www.dyndns.org/.

Without DDNS, we always tell the users to use the WAN IP of the P-660R-Tx v2 to reach our internal server. It is inconvenient for the users if this IP is dynamic. With DDNS supported by the P-660R-Tx v2, you apply a DNS name (e.g., www.zyxel.com.tw) for your server (e.g., Web server) from a DDNS server. The outside users can always access the web server using the www.zyxel.com.tw regardless of the WAN IP of the P-660R-Tx v2.

When the ISP assigns the P-660R-Tx v2 a new IP, the P-660R-Tx v2 updates this IP to DDNS server so that the server can update its IP-to-DNS entry. Once the IP-to-DNS table in the DDNS server is updated, the DNS name for your web server (i.e., www.zyxel.com.tw) is still usable.

9. When do I need DDNS service? When you want your internal server to be accessed by using DNS name rather

than using the dynamic IP address we can use the DDNS service. The DDNS server allows to alias a dynamic IP address to a static hostname. Whenever

P-660R-Tx v2 Series Support Notes

the ISP assigns you a new IP, the P-660R-Tx v2 sends this IP to the DDNS server for its updates.

10. What is DDNS wildcard? Does the P-660R-Tx v2 support DDNS wildcard?

Some DDNS servers support the wildcard feature which allows the hostname, *.yourhost.dyndns.org, to be aliased to the same IP address as yourhost.dyndns.org. This feature is useful when there are multiple servers inside and you want users to be able to use things such as www.yourhost.dyndns.org and still reach your hostname.

Yes, the P-660R-Tx v2 supports DDNS wildcard that http://www.dyndns.org/ supports. When using wildcard, you simply enter yourhost.dyndns.org in the Host field in Menu 1.1 Configure Dynamic DNS.

11. Can the P-660R-Tx v2's SUA handle IPSec packets sent by the IPSec gateway?

Yes, the P-660R-Tx v2's SUA can handle IPSec ESP Tunneling mode. We know when packets go through SUA, SUA will change the source IP address and source port for the host. To pass IPSec packets, SUA must understand the ESP packet with protocol number 50, replace the source IP address of the IPSec gateway to the router's WAN IP address. However, SUA should not change the source port of the UDP packets which are used for key managements. Because the remote gateway checks this source port during connections, the port thus is not allowed to be changed.

12. How do I setup my P-660R-Tx v2 for routing IPSec packets over SUA? For outgoing IPSec tunnels, no extra setting is required.

For forwarding the inbound IPSec ESP tunnel, A 'Default' server set in menu

15.2.1 is required. It is because SUA makes your LAN appear as a single machine to the outside world. LAN users are invisible to outside users. So, to make an internal server for outside access, we must specify the service port and the LAN IP of this server in Menu 15. Thus SUA is able to forward the incoming packets to the requested service behind SUA and the outside users access the server using the P-660R-Tx v2's WAN IP address. So, we have to configure the internal IPsec as a default server (unspecified service port) in menu 15.2.1 when it acts a server gateway.

P-660R-Tx v2 Series Support Notes

13. What is Traffic Shaping?

Traffic Shaping is a feature in the P-660R-Tx v2. It allocates the bandwidth to WAN dynamically and aims at boosting the efficiency of the bandwidth. If there are serveral VCs in the P-660R-Tx v2 but only one VC activated at one time, the P-660R-Tx v2 allocates all the Bandwidth to the VC and the VC gets full bandwidth. If another VCs are avtivated later, the bandwidth is yield to other VCs after ward.

14. What do the parameters (PCR, SCR, MBS) mean?

Traffic shaping parameters (PCR, SCR, MBS) can be set in Menu 4 and Menu

11.6 and is valid for both incoming and outgoing direction since G.shdsl is symmetric. Peak Cell Rate(PCR): The maximum bandwidth allocated to this connection. The VC connection throughput is limited by PCR. Sustainable Cell Rate(SCR): The least guaranteed bandwidth of a VC. When there are multi-VCs on the same line, the VC throughput is guaranteed by SCR. Maximum Burst Size(MBS): The amount of cells transmitted through this VC at the Peak Cell Rate before yielding to other VCs. Total bandwidth of the line is dedicated to single VC if there is only one VC on the line. However, as the other VC asking the bandwidth, the MBS defines the maximum number of cells transmitted via this VC with Peak Cell rate before yielding to other VCs.

The P-660R-Tx v2 holds the parameters for shaping the traffic among its virtual channels. If you do not need traffic shaping, please set SCR = 0, MBS = 0 and PCR as the maximum value according to the line rate (for example, 2.3 Mbps line rate will result PCR as 5424 cell/sec.)

15.Why do we perform traffic shaping in the P-660R-Tx v2 ? The P-660R-Tx v2 must manage traffic fairly and provide bandwidth allocation

for different sorts of applications, such as voice, video, and data. All applications have their own natural bit rate. Large data transactions have a fluctuating natural bit rate. The P-660R-Tx v2 is able to support variable traffic among different virtual connections. Certain traffic may be discarded if the virtual connection experiences congestion. Traffic shaping defines a set of actions taken by the P-660R-Tx v2 to avoid congestion; traffic shaping takes measures to adapt to unpredictable fluctuations in traffic flows and other problems among virtual connections.

P-660R-Tx v2 Series Support Notes

ADSL FAQ

1. How does ADSL compare to Cable modems? ADSL provides a dedicated service over a single telephone line; cable

modems offer a dedicated service over a shared media. While cable modems have greater downstream bandwidth capabilities (up to 30 Mbps), that bandwidth is shared among all users on a line, and will therefore vary, perhaps dramatically, as more users in a neighborhood get online at the same time. Cable modem upstream traffic will in many cases be slower than ADSL, either because the particular cable modem is inherently slower, or because of rate reductions caused by contention for upstream bandwidth slots. The big difference between ADSL and cable modems, however, is the number of lines available to each. There are no more than 12 million homes passed today that can support two-way cable modem transmissions, and while the figure also grows steadily, it will not catch up with telephone lines for many years. Additionally, many of the older cable networks are not capable of offering a return channel; consequently, such networks will need significant upgrading before they can offer high bandwidth services.

2. What is the expected throughput? In our test, we can get about 1.6Mbps data rate on 15Kft using the 26AWG

loop. The shorter the loop, the better the throughput. Besides, please do not stay in menu 24.1 it will slow down the throughput.

3. What is the micro filter used for?

4. How do I know the ADSL line is up? You can see the DSL LED on the P-660R-Tx v2's front panel is green on when

the ADSL physical layer is up.

5. How does the P-660R-Tx v2 work on a noisy ADSL? Depending on the line quality, the P-660R-Tx v2 uses "Fall Back" and "Fall

Forward" to automatically adjust the date rate.

P-660R-Tx v2 Series Support Notes

6. Does the VC-based multiplexing perform better than the LLC-based multiplexing?

Though the LLC-based multiplexing can carry multiple protocols over a single VC, it requires extra header information to identify the protocol being carried on the virtual circuit (VC). The VC-based multiplexing needs a separate VC for carrying each protocol but it does not need the extra headers. Therefore, the VC-based multiplexing is more efficient.

7. How do I know the details of my ADSL line statistics? You can use the following CI commands to check the ADSL line statistics.

TCI> wan adsl perfdata T TCI> wan adsl status T TCI> sys log disp T TCI> wan adsl linedata far T TCI> wan adsl linedata near T

You can also do it in Web Configurator, Maintenance -> Diagnostic -> DSL

Line:

8. What are the signaling pins of the ADSL connector?

The signaling pins on the P-660R-Tx v2's ADSL connector are pin 3 and pin 4. The middle two pins for a RJ11 cable.

P-660R-Tx v2 Series Support Notes

Application Notes

General Application Notes

1. Internet Access Using P-660R-Tx v2 under Bridge mode

• Setup your workstation T

• Setup your P-660R-Tx v2 under bridge mode

If the ISP limits some specific computers to access Internet, that means only the traffic to/from these computers will be forwarded and the other will be filtered. In this case, we use P-660R-Tx v2 which works as an ADSL bridge modem to connect to the ISP. The ISP will generally give one Internet account and limit only one computer to access the Internet. See the figure below for this setup.

Set up your workstation

1. Ethernet connection To connect your computer to the P-660R-Tx v2's LAN port, the computer must

have an Ethernet adapter card installed. For connecting a single computer to the P-660R-Tx v2, we use a cross-over Ethernet cable.

2. TCP/IP configuration In most cases, the IP address of the computer is assigned by the ISP

dynamically so you have to configure the computer as a DHCP client which obtains the IP from the ISP using DHCP protocol. The ISP may also provide the gateway, DNS via DHCP if they are available. Otherwise, please enter the static IP addresses for all that the ISP gives to you in the network TCP/IP

P-660R-Tx v2 Series Support Notes

settings. For Windows, we check the option 'Obtain an IP address automatically' in its TCP/IP setup, please see the example shown below.

Setup your P-660R-Tx v2 under bridge mode

The following procedure shows you how to configure your P-660R-Tx v2 as an ADSL Modem for bridging traffic. We will use Web Configurator to guide you through the related menu.

(1) Configure P-660R-Tx v2 as bridge mode in Winzard Setup -> ISP

Parameters for Internet Access.

P-660R-Tx v2 Series Support Notes

(2) Configure a LAN IP for the P-660R-Tx v2 and turn off DHCP Server in Advanced Setup -> LAN -> LAN Setup. We use 192.168.1.1 in this case.

(3) Configure for Internet setup parameters in Advanced Setup -> WAN -> WAN Setup.

P-660R-Tx v2 Series Support Notes

Key Settings:

Option Description

Encapsulation

Select the correct Encapsulation type that your ISP supports. For example, RFC 1483.

Multiplexing

Select the correct Multiplexing type that your ISP supports. For example, LLC.

VPI & VCI number

Specify a VPI (Virtual Path Identifier) and a VCI (Virtual Channel Identifier) given to you by your ISP.

2. Internet Access Using P-660R-Tx v2 under Router mode

For most Internet users having multiple computers want to share an Internet account for Internet access, they have to install an Internet sharing device, like a router. In this case, we use the P-660R-Tx v2 which works as a general Router plus an ADSL Modem.

P-660R-Tx v2 Series Support Notes

Set up your workstation

(1) Ethernet connection

Connect the LAN ports of all computers and the P-660R-Tx v2 to a HUB using a straight Ethernet cable.

(2) TCP/IP configuration Since the P-660R-Tx v2 is set to DHCP server as default, so you need only to

configure the workstations as the DHCP clients in the networking settings. In this case, the IP address of the computer is assigned by the P-660R-Tx v2. The P-660R-Tx v2 can also provide the DNS to the clients via DHCP if it is available. For this setup in Windows, we check the option 'Obtain an IP address automatically' in its TCP/IP setup. Please see the example shown below.

Set up your P-660R-Tx v2

The following procedure shows you how to configure your P-660R-Tx v2 as Router mode for routing traffic. We will use SMT menu to guide you through the related menu. You can use console or Telnet for finishing these configurations.

P-660R-Tx v2 Series Support Notes

(1) Configure P-660R-Tx v2 as routing mode in Winzard Setup -> ISP Parameters for Internet Access.

(2) Configure a LAN IP for the P-660R-Tx v2 and the DHCP settings in Advanced Setup -> LAN -> LAN Setup.

(3) Configure for Internet setup parameters in Advanced Setup -> WAN -> WAN Setup.

Key Settings:

Option Description

Encapsulation

Select the correct Encapsulation type that your ISP supports. For example, RFC 1483.

Multiplexing

Select the correct Multiplexing type that your ISP supports. For example, LLC.

VPI & VCI number

Specify a VPI (Virtual Path Identifier) and a VCI (Virtual Channel Identifier) given to you by your ISP.

Network Address Translation

Set to SUA Only if you only have a single IP account for sharing with local computers.

IP Address Assignment

Set to Dynamic if the ISP provides the IP for the P-660R-Tx v2 dynamically. Otherwise, set to Static and enter the IP in the following IP Address field.

IP Address

This field can not be configured if the ISP provides the IP for the P-660R-Tx v2 dynamically. Otherwise, enter the IP that the ISP gives to you.

3. Setup the P-660R-Tx v2 as a DHCP Relay

• What is DHCP Relay? DHCP stands for Dynamic Host Configuration Protocol. In addition to the

DHCP server feature, the P-660R-Tx v2 supports the DHCP relay function. When it is configured as DHCP server, it assigns the IP addresses to the LAN clients. When it is configured as DHCP relay, it is responsible for forwarding the requests and responses negotiating between the DHCP clients and the server. See figure 1.

P-660R-Tx v2 Series Support Notes

• Setup the P-660R-Tx v2 as a DHCP Relay Set the P-660R-Tx v2 to DHCP Relay in Web Configurator, Advanced Setup ->

LAN -> LAN Setup and enter the IP address of the DHCP server in the

'Remote DHCP Server' field.

4. SUA Notes Tested SUA/NAT Applications (e.g., Cu-SeeMe, ICQ, NetMeeting)

P-660R-Tx v2 Series Support Notes

Introduction Generally, SUA makes your LAN appear as a single machine to the outside world. LAN users are invisible to outside users. However, some applications such as Cu-SeeMe, and ICQ will need to connect to the local user behind the P-660R-Tx v2. In such case, a SUA server must be entered in menu 15.2.1 to forward the incoming packets to the true destination behind SUA. Generally, we do not need extra settings of menu 15.2.1 for an outgoing connection. But for some applications we need to configure Web Configurator, Advanced Setup -> NAT ->Edit Details to make the outgoing connection work. After the required settings are completed the internal server or client applications can be accessed by using the P-660R-Tx v2's

TWAN IPT address.

SUA Supporting Table The following are the required port forwarding settings for the various applications running SUA mode. ZyXEL SUA Supporting Table

Required Settings in Menu 15.2.1 Port/IP

Application

Outgoing Connection

Incoming

Connection HTTP None 80/client IP FTP None 21/client IP TELNET None 23/client IP

(and remove Telnet

filter in WAN port) POP3 None 110/client IP SMTP None 25/client IP

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ZyXEL P-660R-Tx v2 Support Notes

Specifications and Main Features

Frequently Asked Questions

User Manual