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Page 116 / 132 Scroll up to view Page 111 - 115
C
ONFIGURING
THE
BARRICADE
4-72
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.
Page 117 / 132
A
DVANCED
S
ETTINGS
4-73
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.
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.
Authentication
Required
None: 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
Code
Password Authentication key.
Parameter
Description
Page 118 / 132
C
ONFIGURING
THE
BARRICADE
4-74
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.
Page 119 / 132
A-1
A
PPENDIX
A
T
ROUBLESHOOTING
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.
Page 120 / 132
T
ROUBLESHOOTING
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 DHCP function to dynamically
assign IP addresses to 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

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