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Part E
– RESET of router to recover from lost password.
How do you reset the Barricade to factory defaults?
To reset your Barricade 7008-ABR to factory defaults please follow the steps below:
1.
Power off the router for about 30 seconds and then turn it on.
2. Wait for the router to sync up (about 10 secs)
3.
Depress the RESET
* button for 8 seconds and release it. To verify a sucessful
reset, the power light will flash rapidly, all 8 port lights will turn on shortly, and
then the router will return to its normal state.
* Note: The RESET
button is located on the left side of the front panel.
Part F
– Adjusting MTU Value
MTU, Partial Loss of Internet Connection, and Performance
o
MTU (Maximum Transmission Unit) is the largest packet a network
device transmits. The best MTU setting for equipment is often just the
default value. MTU is sometimes presented as something that can be
easily changed to improve performance, but in practice this may cause
problems.
You need to follow this procedure in order to prevent problems
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with the VPN connection. This will manifest itself as severe performance
problems such as chronic disconnects
.
o
Setting MTU size is a process of trial-and-error: start with the
maximum value of 1500, then reduce the size until the problem goes
away.
In order to find the optimum size for the MTU setting you will need to utilize the
extended portions of the PING command. (The parameters are case sensitive!)
PING –f –l 1500 fpnet.galileo.com
-f
Set Don’t Fragment flag in packet
-l size Send buffer size
(lowercase L)
If you have a problem with the packet size the following message will be returned:
Packet needs to be fragmented but DF set.
Reduce the size of the send buffer until the reply message comes back normally.
Reply from 12.17.202.11: bytes=1500 time=36ms TTL=59
To make the changes on the workstation you will need to go to
, Select Tests + Tools. Then select Dr. TCP. You will need to
download & install the latest copy of this program (DR.TCP). This program will allow
you to make the necessary changes to the MTU size on each workstation. Change the
MaxMTU value, Click Apply and then reboot the workstation.
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