Asus Router RX3042H User Manual

RX3042H User's Manual Troubleshooting
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12  Troubleshooting
This  appendix  suggests  solutions  for  problems  you  may  encounter 
in  installing  or  using  the  RX3042H,  and  provides  instructions  for 
using several IP utilities to diagnose problems. 
Contact  Customer  Support  if  these  suggestions  do  not  resolve  the 
problem.
ProblemTroubleshooting Suggestion
LEDs
Power LED does 
not illuminate after 
product is turned on. Verify that you are using the AC adapter provided with 
the...

Troubleshooting RX3042H User's Manual
110

ProblemTroubleshooting Suggestion
PC cannot access 
Internet (cont.) •  
 Verify with your ISP that the DNS server specified 
f o r   t h e   P C   i s   v a l i d .   C o r r e c t   t h e   a d d r e s s   o r 
configure  the  PC  to  receive  this  information 
automatically.
•      Verify  that  a  Network Address  Translation  rule  has  been  defined  on  the  RX3042H  to  translate 
the  private  address  to  your  public  IP  address. 
The  assigned...

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111

12.1  Diagnosing Problem using IP Utilities
12.1.1  ping
Ping  is  a  command  you  can  use  to  check  whether  your  PC  can 
recognize other computers on your network and the Internet. A ping 
command  sends  a  message  to  the  computer  you  specify.  If  the 
computer receives the message, it sends messages in reply. To use 
it,  you  must  know  the  IP  address  of  the  computer  with  which  you 
are trying to communicate. 
On  Windows-based...

Troubleshooting RX3042H User's Manual
112
Using  the  ping  command,  you  can  test  whether  the  path  to  the 
RX3042H  is  working  (using  the  preconfigured  default  LAN  IP 
address 192.168.1.1) or another address you assigned.
You  can  also  test  whether  access  to  the  Internet  is  working  by 
typing  an  external  address,  such  as  that  for  www.yahoo.com 
(216.115.108.243). If you do not know the IP address of a particular 
Internet location, you can use the nslookup command,...

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RX3042H User's Manual Index
Figure 12.2. Using the nslookup Utility
There may be several addresses associated with an Internet name. 
This  is  common  for  web  sites  that  receive  heavy  traffic;  they  use 
multiple, redundant servers to carry the same information.
To  exit  from  the  nslookup  utility,  type  exit  and  press    at  the 
command prompt. 

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RX3042H User's Manual Index
13  Index
 ACL Configuration page, 74
Computers
configuring IP information, 13
Configuration Manager
overview, 25
troubleshooting, 109
Connectors
rear panel, 8
Date and time, changing, 92
Default configuration, 21
Default gateway, 53
DHCP
defined, 45
DHCP Address Table page, 47
DHCP client
defined, 45
DHCP Lease Table page, 49
DHCP server
defined, 45
pools, 45
viewing assigned addresses, 48
DHCP Server Configuration page, 46
Diagnosing problems
after installation, 20
DMZ IP...

116
Index RX3042H User's Manual

Windows Me, 15
Windows NT 4.0, 16
IP Configuration
Windows XP, 13
IP information
configuring on LAN computers, 13
, 54-58
IP routes
dynamically configuring, 54
IP Routes
defined, 54
LAN IP address, 27
specifying, 27
LAN network mask, 107
LAN subnet mask, 107
LEDs, 7
troubleshooting, 109
Login
to Configuration Manager, 23
MAC address
in Fixed DHCP Lease Table, 49
NAT
defined, 63
NAPT, 65
Overload, 68
PAT, 65
Reverse NAPT, 67
Virtual Server, 67
Navigating, 26
Netmask. See...

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RX3042H User's Manual Index

changing, 90
default, 19, 24
recovering, 111
PC configuration, 13
PC Configuration
static IP addresses, 17
Ping, 111
Power adapter, 12
Primary DNS, 37
Quick Configuration
logging in, 19
Rear Panel, 8
RIP Configuration page, 54
Routing Configuration page, 54, 56
Secondary DNS, 37
Static IP addresses, 17
Static Route Configuration page, 56
Static routes
adding, 57
Statically assigned IP addresses, 45
Subnet masks, 107
System requirements
for Configuration Manager, 23
System...