SMC Networks Router SMCWBR14T User Manual

							SYSTEM
4-63
Remote Management
By default, management access is only available to users on your local 
network. However, you can also manage the Barricade from a remote host 
by entering the IP address of a remote computer on this screen. Check the 
Enabled check box, and enter the IP address of the remote host and click 
Save Settings.
Note:If you check Enabled and specify an IP address of 0.0.0.0, any 
host can manage the Barricade.
For remote management via WAN IP address you need to connect using 
port 8080. Simply enter WAN IP address followed by :8080 in the address 
field of your web browser, for example, 212.120.68.20:8080. 
						

							CONFIGURING THE BAR RICADE
4-64
SNMP
Community
Click SNMP and then Community to access the screen below.
Use the SNMP configuration screen to display and modify parameters for 
the Simple Network Management Protocol (SNMP). A computer attached 
to the network, called a Network Management Station (NMS), can be used 
to access this information. Access rights to the agent are controlled by 
community strings. To communicate with the Barricade, the NMS must 
first submit a valid community string for authentication.
Note:Up to 5 community names may be entered.
Parameter Description
Community A community name authorized for management access.
Access Management access is restricted to Read Only (Read) or 
Read/Write (Write).
Valid Enables/disables the entry.  
						

							SNMP
4-65
Trap
Click SNMP and then Tra p. This will load the SNMP trap screen shown 
below.
Click Save Settings to proceed, or Cancel to change your settings.
Parameter Description
IP Address Traps are sent to this address when errors or specific events 
occur on the network.
Community A community string (password) specified for trap 
management. Enter a word, something other than public or 
private, to prevent unauthorized individuals from reading 
information on your system.
Version Sets the trap status to disabled, or enabled with v1 or v2c.
The v2c protocol was proposed in late 1995 and includes 
enhancements to v1 that are universally accepted. These 
include a get-bulk command to reduce network 
management traffic when retrieving a sequence of MIB 
variables, and a more elaborate set of error codes for 
improved reporting to a Network Management Station.  
						

							CONFIGURING THE BAR RICADE
4-66
UPnP
Universal Plug and Play technology makes home networking simple and 
affordable. This architecture offers pervasive peer-to-peer network 
connectivity of PCs of all form factors, intelligent appliances, and wireless 
devices. UPnP architecture leverages TCP/IP and the web to enable 
seamless proximity networking in addition to control and data transfer 
among networked devices in the home, office, and everywhere in between.
Click Enable to turn on the Universal Plug and Play function of the 
Barricade. This function allows the device to automatically and dynamically 
join a network.
 
Click Save Settings to proceed, or Cancel to change your settings. 
						

							ROUTING
4-67
Routing
This section defines routing related parameters, including static routes and 
RIP (Routing Information Protocol) parameters.
Static Route
Click Add to add a new static route to the list.
Click Save Settings to save the configuration.
Parameter Description
Index Index number of the route.
Network Address Enter the IP address of the remote computer for which to set 
a static route.
Subnet Mask Enter the subnet mask of the remote network for which to set 
a static route.
Gateway Enter the WAN IP address of the gateway to the remote 
network.
Configure Allows you to edit existing routes. 
						

							CONFIGURING THE BAR RICADE
4-68
RIP
RIP sends routing-update messages at regular intervals and when the 
network topology changes.
Parameter Description
General RIP 
Parameters
RIP Mode Globally enables or disables RIP.
Auto summary If Auto summary is disabled, then RIP packets will include 
sub-network information from all subnetworks connected to 
the router. If enabled, this sub-network information will be 
summarized to one piece of information covering all 
subnetworks.
Table of current 
Interface RIP 
parameter
Interface The WAN interface to be configured.
Operation Mode Disable: RIP disabled on this interface.
Enable: RIP enabled on this interface.
Silent: Listens for route broadcasts and updates its route table. 
It does not participate in sending route broadcasts.
Version Sets the RIP (Routing Information Protocol) version to use on 
this interface.
Poison Reverse A method for preventing loops that would cause endless 
retransmission of data traffic. 
						

							ROUTING
4-69
When a router receives a routing update that includes changes to an entry, 
it updates its routing table to reflect the new route. RIP routers maintain 
only the best route to a destination. After updating its routing table, the 
router immediately begins transmitting routing updates to inform other 
network routers of the change.
Click Save Settings to proceed, or Cancel to change your settings.
Authentication 
RequiredNone: No authentication.
Password: A password authentication key is included in the 
packet. If this does not match what is expected, the packet will 
be discarded. This method provides very little security as it is 
possible to learn the authentication key by watching RIP 
packets.
Authentication 
CodePassword Authentication key. Parameter Description 
						

							CONFIGURING THE BAR RICADE
4-70
Routing Table
Click Routing Table to view the screen below.
Parameter Description
Flags Indicates the route status:
C = Direct connection on the same subnet.
S = Static route.
R = RIP (Routing Information Protocol) assigned route.
I = ICMP (Internet Control Message Protocol) Redirect route.
Network Address Destination IP address.
Netmask The subnetwork associated with the destination.
This is a template that identifies the address bits in the 
destination address used for routing to specific subnets. Each 
bit that corresponds to a “1” is part of the subnet mask 
number; each bit that corresponds to “0” is part of the host 
number.
Gateway The IP address of the router at the next hop to which frames 
are forwarded.
Interface The local interface through which the next hop of this route is 
reached.
Metric When a router receives a routing update that contains a new or 
changed destination network entry, the router adds 1 to the 
metric value indicated in the update and enters the network in 
the routing table. 
						

							A-1
APPENDIX A
TROUBLESHOOTING
This section describes common problems you may encounter and possible 
solutions to them. The Barricade can be easily monitored through panel 
indicators to identify problems. 
Troubleshooting Chart
Symptom Action
LED Indicators
Power LED is 
off• Check connections between the Barricade, the 
external power supply, and the wall outlet.
• If the power indicator does not turn on when the 
power cord is plugged in, you may have a problem 
with the power outlet, power cord, or external power 
supply. However, if the unit powers off after running 
for a while, check for loose power connections, power 
losses, or surges at the power outlet. If you still cannot 
isolate the problem, then the external power supply 
may be defective. In this case, contact Technical 
Support for assistance.  
						

							TROUBLESHOOTING
A-2
LED Indicators
LAN LED is 
Off• Verify that the Barricade and attached device are 
powered on. 
• Be sure the cable is plugged into both the Barricade 
and the corresponding device. 
• Verify that the proper cable type is used and that its 
length does not exceed the specified limits. 
• Be sure that the network interface on the attached 
device is configured for the proper communication 
speed and duplex mode.
• Check the adapter on the attached device and cable 
connections for possible defects. Replace any 
defective adapter or cable if necessary. 
Network Connection Problems
Cannot ping the 
Barricade from 
the attached 
LAN, or the 
Barricade cannot 
ping any device 
on the attached 
LAN• Verify that the IP addresses are properly configured. 
For most applications, you should use the Barricade’s 
D HC P fu nct ion  t o dyn am ica lly a ssig n I P ad dre sses  t o 
hosts on the attached LAN. However, if you manually 
configure IP addresses on the LAN, verify that the 
same network address (network component of the IP 
address) and subnet mask are used for both the 
Barricade and any attached LAN devices.
• Be sure the device you want to ping (or from which 
you are pinging) has been configured for TCP/IP. Troubleshooting Chart
Symptom Action