Asus Router RX3042H User Manual

							
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9.  Click Apply to save the settings
5.2.6  PPTP
Some  of  the  service  providers  require  user  to  login  using  PPTP 
connection.
5.2.6.1  WAN PPTP Configuration Parameters
Table  5.5  describes  the  configuration  parameters  available  for 
PPTP connection mode.
Table 5.5. WAN PPTP Configuration Parameters
SettingDescription
LinkSelect  a  port  to  configure. Available  options  are  WAN1, 
WAN2 or DMZ.
Connection 
Mode
Select PPTP from the connection mode drop-down list.
WAN 
Interface IP
Select  how  WAN  IP  address  is  to  be  configured  –  static 
(manually  set  the  IP  address)  or  dynamic  (obtained 
automatically from the DHCP server).
StaticChoose  this  connection  mode  if  the  WAN  IP  is  a  fixed  IP 
provided by your ISP.
IP AddressEnter the WAN IP address provided by your ISP.
Subnet MaskEnter the subnet mask for the WAN IP provided by your ISP.
Gateway 
Address
Enter the gateway IP address for the WAN provided by your 
ISP.
Dynamic 
(DHCP)
Select  this  connection  mode  if  your  WAN  IP  address  is 
obtained automatically from your ISPʼs DHCP server.
User 
Name and 
Password
Enter  the  username  and  password  you  use  to  log  into  your 
ISP.  (Note:  this  is  different  from  the  information  you  used  to 
log into Configuration Manager.)
Server IP 
Address
Enter the PPTP server IP address provided by your ISP.
MTUYou may specify the maximum size of the transmitted packet. 
For PPTP, the range of MTU is from 546 to 1460. The default 
value is 1460.
MPPEMPPE  stands  for  Microsoft  Point-to-Point  Encryption 
protocol.  Check  this  box,  if  the  packet  is  to  be  encrypted  w/ 
this protocol. 
						

							
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SettingDescription
Connect on 
Demand
Click  on  the  Enable  or  Disable  radio  button  to  enable  or 
disable this option.
Disconnect 
after Idle 
(min)
Enter  the  inactivity  timeout  period  at  which  you  want  to 
disconnect the Internet connection when there is no traffic. A 
value of 0 means no activity time out. Note that SNTP service 
may interfere with this function if there are activities from the 
service.
StatusOn: PPTP connection is active.
Off: No PPTP connection is active.
Connecting: RX3042H is trying to connect to your ISP using 
PPTP connection mode.
Manual 
Disconnect/
Connect
Click  the  Disconnect  or  Connect  button  to  disconnect  or 
connect using the PPTP connection mode. 
Figure 5.7. WAN – PPTP Configuration 
						

							
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5.2.6.2  Configuring PPTP for WAN
Follow the instructions below to configure PPTP settings:
1.  Open  the  Network  Setup  configuration  page  by  clicking  the 
Router Setup ->Connection menu. 
2.  Select  which  WAN  port  (WAN1/WAN2)  to  configure  for  PPTP 
connection mode.
3.  Select  PPTP  from  the 
WAN  Connection  Mode   drop-down  list 
as shown in Figure 5.7.
4.  Select  how  WAN  IP  is  to  be  obtained  –  static  or  dynamic.  If  your  ISP  provides  a  fixed  IP  address,  select 
Static   in  the  WAN 
Interface IP drop-down list. Consult with your ISP if you have no 
idea.
5. Enter IP address, subnet mask and gateway IP address for your  WAN if your WAN IP is to be set manually.
6. Enter user name and password provided by your ISP.
7. Enter PPTP server IP address provided by your ISP.
8.  (Optional)  Change  the  MTU  value  if  necessary.  If  you  do  not  know  what  value  to  enter,  leave  it  as  is.  For  PPTP  connection 
mode, the range of MTU is from 546 to 1460. The default value 
is 1460.
9.  Check  MPPE  box  if  the  packet  is  to  be  encrypted  with  this 
protocol.
10.Enter appropriate connection settings for  Disconnect after Idle 
(min) and Connect on Demand.
11.Click 
Apply to save the settings.
5.3  WAN Load Balancing and Line Back Up
RX3042H  supports  load  balancing  and  line  back  up  on  the  WAN 
connection.  This  function  is  available  only  when  “Dual-WAN”  is 
selected  in  the  Router  Connection  configuration  page  (accessible 
by clicking the Router Setup ->Connection menu).
WAN  load  balancing  distributes  communication  activities  across 
the two WANs on RX3042H based on the preconfigured bandwidth  
						

							
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requirement  on  the  WANs. Another  feature  supported  is  fail-over 
for  the  WAN  ports.  If  one  of  the  WAN  links  is  down,  RX3042H  will 
direct the traffic destined for the downed WAN port to the still active 
WAN port.
The  line  back  up  function  is  another  feature  supported  to  ensure 
uninterrupted Internet access. When the primary WAN link is down, 
the  Internet  access  is  automatically  switched  to  the  backup  WAN 
link.
5.3.1  WA N   L o a d   B a l a n c i n g   a n d   L i n e   B a c k   U p 
Configuration Parameters
Table 5.6 describes the configuration parameters available for WAN 
load balancing and line back up.
Table 5.6. WAN Load Balancing and Line Back Up Configuration Parameters
SettingDescription
Load BalanceSelect one of the three available options:
Disable:  disable  both  the  WAN  load  balancing  and  line 
back up functionalities.
Auto  Mode:  select  this  option  if  load  balancing  is  desired. 
The  algorithm  used  for  the  load  balancing  is  weighted 
round robin.
Line Backup: select this option if line backup is needed. In 
the  existing  implementation,  the  primary  link  is  always  set 
to WAN1 and the backup link is always set to WAN2.
WAN1/WAN2 
Bandwidth
Enter  the  ratio  of  the  traffic  amount  that  you  want  to 
distribute  between  the  WANs.  The  number  should  be 
between 0 to 100%. For example, 80% for WAN1 and 20% 
for  WAN2  means  80%  of  the  traffic  is  directed  to  WAN1 
and 20% of the traffic is directed to WAN2.
Connectivity 
Check
Click  Enable  or  Disable  radio  button  to  enable  or  disable 
this  feature.  Connectivity  check  is  used  to  monitor  the 
link  status  for  the  WAN  ports.  If  this  option  is  disabled, 
RX3042H  will  not  perform  fail-over;  this  means  that  if 
one  of  the  WAN  links  is  down,  the  traffic  directed  to  the 
downed  link  will  not  be  re-directed  to  the  active  link.  It  is 
recommended that you keep this option enabled. However, 
if  the  gateway  or  the  specific  network  device  that  will  be 
checked for connectivity does not respond to ping, you  
						

							
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SettingDescription
Connectivity 
Check (Cont.)
will  need  to  disable  this  feature.  Otherwise,  RX3042H  will 
make  incorrect  judgment  regarding  the  WAN  link  status 
and  thus  affect  the  behavior  of  the  load  balancing  or  line 
back up.
Connectivity 
Check Interval
The  interval  that  RX3042H  will  check  for  the  WAN  link 
status. The allowable value is 1 to 60 seconds.
Connectivity 
Check IP 
Address 
(WAN1)
Enter  the  IP  address  of  the  specific  network  device  that 
the traffic will pass through. This field is optional. Normally, 
you donʼt need to provide any IP address here, unless you 
know the traffic must pass a specific network device.
Connectivity 
Check IP 
Address 
(WAN2)
Enter  the  IP  address  of  the  specific  network  device  that 
the traffic will pass through. This field is optional. Normally, 
you donʼt need to provide any IP address here, unless you 
know the traffic must pass a specific network device.
5.3.2  Setting Up WAN Load Balancing and Line  
  Back Up
Figure 5.8. Load Balancing Configuration 
						

							
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Follow the instructions below to set up WAN load balancing:1.  Open  the  Load  Balancing  configuration  page  by  clicking  the 
Router Setup ->Load Balance menu.
2. Select Auto Mode  in the Load Balance field.
3.  Enter  the  ratio  of  the  traffic  amount  that  you  want  to  distribute  between the two WANs. The allowable value is from 0 to 100%. 
The sum of the two numbers is 100%.
4.  Select  whether  you  need  to  enable  or  disable  connectivity 
check. If this option is enabled, please also enter the following:
a) Enter the connectivity check interval.
b)  (Optional)  Enter  the  connectivity  check  IP  address  for  WAN1  and/or WAN2.
5. Click Apply to save the settings.
5.3.3  Setting Up WAN Line Back Up
Follow the instructions below to set up line backup:
1.  Open  the  Load  Balancing  configuration  page  by  clicking  the 
Router Setup ->Load Balance menu.
2. Select “Line Backup ” in the Load Balance field.
3.  Select  whether  you  need  to  enable  or  disable  connectivity 
check. If this option is enabled, please also enter the following:
a) Enter the connectivity check interval.
b) (Optional) Enter the connectivity check IP address for WAN1  and/or WAN2.
4. Click Apply to save the settings. 
						

							
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6  DHCP Server Configuration
6.1  DHCP (Dynamic Host Control Protocol)
6.1.1  What is DHCP?
DHCP is a protocol that enables network administrators to centrally 
manage  the  assignment  and  distribution  of  IP  information  to 
computers on a network.
When  you  enable  DHCP  on  a  network,  you  allow  a  device  —  such 
as  the  RX3042H  —  to  assign  temporary  IP  addresses  to  your 
computers  whenever  they  connect  to  your  network.  The  assigning 
device is called a DHCP server, and the receiving device is a DHCP 
client. 
Note: If you followed the Quick Start Guide instructions, 
you either configured each LAN PC with an IP address,  or  you  specified  that  it  will  receive  IP  information 
dynamically  (automatically).  If  you  chose  to  have  the information  assigned  dynamically,  then  you  configured  your PCs as DHCP clients that will accept IP addresses assigned from a DCHP server such as the RX3042H.
The  DHCP  server  draws  from  a  defined  pool  of  IP  addresses  and 
“leases”  them  for  a  specified  amount  of  time  to  your  computers 
when  they  request  an  Internet  session.  It  monitors,  collects,  and 
redistributes the addresses as needed.
On  a  DHCP-enabled  network,  the  IP  information  is  assigned 
dynamically  rather  than  statically. A  DHCP  client  can  be  assigned 
a  different  address  from  the  pool  each  time  it  reconnects  to  the 
network.
6.1.2  Why use DHCP?
DHCP allows you to manage and distribute IP addresses throughout 
your  network  from  the  RX3042H.  Without  DHCP,  you  would  have 
to  configure  each  computer  separately  with  IP  address  and  related 
information.  DHCP  is  commonly  used  with  large  networks  and 
those that are frequently expanded or otherwise updated. 
						

							
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6.1.3  Configuring DHCP Server
Note:  By  default,  the  RX3042H  is  configured  as  a DHCP  server  on  the  LAN  side,  with  a  predefined  IP  address pool of 192.168.1.100 through 192.168.1.149 
(subnet  mask  255.255.255.0).  To  change  this  range of addresses, follow the procedures described in this 
section. 
First,  you  must  configure  your  PCs  to  accept  DHCP  information 
assigned by a DHCP server:
1. Open the DHCP Server Configuration page, shown in Figure 6.1,  by clicking Advanced -> DHCP Server menu.
Figure 6.1. DHCP Server Configuration Page
2.  Enter  the  information  for  the  IP  Address  Pool  (Begin/End Address),  Subnet  Mask,  Lease  Time  and  Default  Gateway  IP 
Address, fields; others, such as Primary/Secondary DNS Server 
IP Address and Primary/Secondary WINS Server IP Address are 
optional. However, it is recommended that you enter the primary 
DNS  server  IP  address  in  the  space  provided.  You  may  enter 
the  LAN  IP  or  your  ISPʼs  DNS  IP  in  the  primary  DNS  Server 
IP Address  field.  Table  6.1  describes  the  DHCP  configuration 
parameters in detail. 
						

							
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Table 6.1. DHCP Configuration Parameters
FieldDescription
EnableCheck or uncheck this box to enable or disable 
DHCP server service for your LAN.
IP Address  
Pool Begin/
End
Specify the lowest and highest addresses in the 
DHCP address pool.
Lease Time The amount of time in seconds the assigned 
address will be used by a device connected on the 
LAN.
Default 
Gateway IP 
AddressThe address of the default gateway for computers 
that receive IP addresses from this pool. The 
default gateway is the device that the DHCP client 
computers first contacted to communicate with the 
Internet. Typically, it is the RX3042Hʼs LAN port IP 
address.
Primary/ 
Secondary 
DNS Server 
IP AddressThe IP address of the Domain Name System server 
to be used by computers that receive IP addresses 
from this pool. The DNS server translates common 
Internet names that you type into your web browser 
into their equivalent numeric IP addresses. Typically, 
the server(s) are located with your ISP. However, 
you may enter LAN IP address of the RX3042H as 
it will serve as DNS proxy for the LAN computers 
and forward the DNS request from the LAN to 
DNS servers and relay the results back to the 
LAN computers. Note that both the primary and 
secondary DNS servers are optional.
Primary/ 
Secondary 
WINS  Server 
IP Address 
(optional) The IP address of the WINS servers to be used 
by computers that receive IP addresses from the 
DHCP IP address pool. You donʼt need to enter 
this information unless your network has WINS 
servers.
3. Click Apply
 to save the DHCP server configurations. 
						

							
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6.1.4  Viewing Current DHCP Address Assignments
When  the  RX3042H  functions  as  a  DHCP  server  for  your  LAN,  it 
keeps  a  record  of  any  addresses  it  has  leased  to  your  computers. 
To  view  a  table  of  all  current  IP  address  assignments,  just  open 
the  DHCP  Server  Configuration  page  and  click  on  the  link  “Current 
DHCP Lease Table” located at the bottom of the configuration page. 
A page displays similar to that shown in Figure 6.2.
The  DHCP  lease  table  lists  any  IP  addresses  leased  and  the 
corresponding MAC addresses.
Figure 6.2. DHCP Lease Table
6.1.5  Fixed DHCP Lease
Fixed DHCP lease is used in situation when a fixed DHCP address 
is  desired  for  a  host  that  gets  IP  from  the  DHCP  server.  First,  you 
should  configure  your  PCs  to  accept  DHCP  information  assigned 
by a DHCP server:
6.1.5.1 Access Fixed DHCP Configuration Page – (Advanced  
  ->DHCP Server)
Open  the  Fixed  DHCP  Lease  configuration  page,  as  shown  in 
Figure 6.3, by clicking Advanced ->DHCP Server menu.
Note  that  when  you  open  the  Fixed  DHCP  Lease  configuration 
page,  a  list  of  existing  lease  is  also  displayed  at  the  bottom  half  of 
the configuration page such as those shown in Figure 6.3.