ZyXEL P-791R v2 用户指南

ZyXEL

P-791R v2 Support Notes

FAQ .................................................................................................................5

ZyNOS FAQ.................................................................................................5

What is ZyNOS? ..........................................................................5

How do I access the P-791R v2 SMT menu?.............................5

How do I upload the ZyNOS firmware code via console? .......5

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

client program via LAN?............................................................5

How do I upload ROMFILE via console port?...........................6

How do I restore P-791R v2 configurations by using TFTP

client program via LAN?............................................................6

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

How to use the Reset button?....................................................6

What is SUA? When should I use SUA? ...................................7

10.

What is the difference between SUA and Full Feature NAT? ..7

11.

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

outside Internet? If possible, how? ..........................................8

12.

When do I need to select Full Feature NAT? ............................8

13.

What IP/Port mapping does Multi-NAT support? .....................9

14.

How many network users can the SUA/NAT support? ..........10

15.

What are Device filters and Protocol filters? ..........................10

16.

How can I protect against IP spoofing attacks?.....................10

Product FAQ .............................................................................................12

What is SHDSL, SHDSL.bis?....................................................12

How can I manage P-791R v2?.................................................12

What is the default password for Web Configurator? ...........12

What’s the difference between ‘Common User Account’ and

‘Administrator Account’? ........................................................12

How do I know the P-791R v2's WAN IP address assigned by

the ISP?.....................................................................................13

What do I need before using the SHDSL?...............................13

What should I do when the power LED is off? .......................13

How to debug while DSL LED is off? ......................................14

How do I verify my PC's IP address assigned by the P-791R

v2？ ......................................................................................14

10.

What is Traffic Shaping? ..........................................................14

11.

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

12.

What do ATM QoS Types (CBR, UBR, VBR-nRT, VBR-RT)
mean? ........................................................................................15

13.

Why do we perform traffic shaping in the P-791R v2? ..........15

14.

The P-791R v2 supports Bridge and Router mode, what's the

difference between them? .......................................................15

15.

How do I know I am using PPPoE? .........................................16

16.

Why does my provider use PPPoE?........................................16

17.

What is DDNS? ..........................................................................16

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