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Page 271 / 331 Scroll up to view Page 266 - 270
Chapter 39 Configuration
VMG1312-B Series User’s Guide
271
Restore Configuration
Restore Configuration allows you to upload a new or previously saved configuration file from your
computer to your Device.
Do not turn off the Device while configuration file upload is in progress.
After the Device configuration has been restored successfully, the login screen appears. Login again
to restart the Device.
The Device automatically restarts in this time causing a temporary network disconnect. In some
operating systems, you may see the following icon on your desktop.
Figure 160
Network Temporarily Disconnected
If you uploaded the default configuration file you may need to change the IP address of your
computer to be in the same subnet as that of the default device IP address (192.168.1.1).
If the upload was not successful, the following screen will appear. Click
OK
to go back to the
Configuration
screen.
Figure 161
Configuration Upload Error
Reset to Factory Defaults
Click the
Reset
button to clear all user-entered configuration information and return the Device to
its factory defaults. The following warning screen appears.
Table 123
Restore Configuration
LABEL
DESCRIPTION
File Path
Type in the location of the file you want to upload in this field or click
Browse ...
to find it.
Browse...
Click this to find the file you want to upload. Remember that you must decompress
compressed (.ZIP) files before you can upload them.
Upload
Click this to begin the upload process.
Page 272 / 331
Chapter 39 Configuration
VMG1312-B Series User’s Guide
272
Figure 162
Reset Warning Message
Figure 163
Reset In Process Message
You can also press the
RESET
button on the rear panel to reset the factory defaults of your Device.
Refer to
Section 1.6 on page 21
for more information on the
RESET
button.
39.3
The Reboot Screen
System restart allows you to reboot the Device remotely without turning the power off. You may
need to do this if the Device hangs, for example.
Click
Maintenance > Reboot
. Click
Reboot
to have the Device reboot. This does not affect the
Device's configuration.
Figure 164
Maintenance > Reboot
Page 273 / 331
VMG1312-B Series User’s Guide
273
C
HAPTER
40
Diagnostic
40.1
Overview
The
Diagnostic
screens display information to help you identify problems with the Device.
The route between a CO VDSL switch and one of its CPE may go through switches owned by
independent organizations. A connectivity fault point generally takes time to discover and impacts
subscriber’s network access. In order to eliminate the management and maintenance efforts, IEEE
802.1ag is a Connectivity Fault Management (CFM) specification which allows network
administrators to identify and manage connection faults. Through discovery and verification of the
path, CFM can detect, analyze and isolate connectivity faults in bridged LANs.
40.1.1
What You Can Do in this Chapter
• The
Ping & TraceRoute & NsLookup
screen lets you ping an IP address or trace the route
packets take to a host (
Section 40.3 on page 274
).
• The
802.1ag
screen lets you perform CFM actions (
Section 40.5 on page 275
).
• The
OAM Ping
screen lets you send an ATM OAM (Operation, Administration and Maintenance)
packet to verify the connectivity of a specific PVC. (
Section 40.5 on page 275
).
40.2
What You Need to Know
The following terms and concepts may help as you read through this chapter.
How CFM Works
A Maintenance Association (MA) defines a VLAN and associated Maintenance End Point (MEP) ports
on the device under a Maintenance Domain (MD) level. An MEP port has the ability to send
Connectivity Check Messages (CCMs) and get other MEP ports information from neighbor devices’
CCMs within an MA.
CFM provides two tests to discover connectivity faults.
•
Loopback test - checks if the MEP port receives its Loop Back Response (LBR) from its target
after it sends the Loop Back Message (LBM). If no response is received, there might be a
connectivity fault between them.
•
Link trace test - provides additional connectivity fault analysis to get more information on where
the fault is. If an MEP port does not respond to the source MEP, this may indicate a fault.
Administrators can take further action to check and resume services from the fault according to
the line connectivity status report.
Page 274 / 331
Chapter 40 Diagnostic
VMG1312-B Series User’s Guide
274
40.3
Ping & TraceRoute & NsLookup
Use this screen to ping, traceroute, or nslookup an IP address. Click
Maintenance > Diagnostic >
Ping&TraceRoute&NsLookup
to open the screen shown next.
Figure 165
Maintenance > Diagnostic > Ping &TraceRoute&NsLookup
The following table describes the fields in this screen.
40.4
802.1ag
Click
Maintenance > Diagnostic
>
8.2.1ag
to open the following screen. Use this screen to
perform CFM actions.
Table 124
Maintenance > Diagnostic > Ping & TraceRoute & NsLookup
LABEL
DESCRIPTION
URL or IP
Address
Type the IP address of a computer that you want to perform ping, traceroute, or nslookup in
order to test a connection.
Ping
Click this to ping the IP address that you entered.
TraceRoute
Click this button to perform the traceroute function. This determines the path a packet
takes to the specified computer.
Nslookup
Click this button to perform a DNS lookup on the IP address of a computer you enter.
Page 275 / 331
Chapter 40 Diagnostic
VMG1312-B Series User’s Guide
275
Figure 166
Maintenance > Diagnostic > 802.1ag
The following table describes the fields in this screen.
40.5
OAM Ping
Click
Maintenance > Diagnostic > OAM Ping
to open the screen shown next. Use this screen to
perform an OAM (Operation, Administration and Maintenance) F4 or F5 loopback test on a PVC. The
Device sends an OAM F4 or F5 packet to the DSLAM or ATM switch and then returns it to the
Device. The test result then displays in the text box.
Table 125
Maintenance > Diagnostic > 802.1ag
LABEL
DESCRIPTION
802.1ag Connectivity Fault Management
Maintenance
Domain (MD)
Level
Select a level (0-7) under which you want to create an MA.
Destination
MAC Address
Enter the target device’s MAC address to which the Device performs a CFM loopback test.
802.1Q VLAN
ID
Type a VLAN ID (0-4095) for this MA.
VDSL Traffic
Type
This shows whether the VDSL traffic is activated.
Loopback
Message (LBM)
This shows how many Loop Back Messages (LBMs) are sent and if there is any inorder or
outorder Loop Back Response (LBR) received from a remote MEP.
Linktrace
Message (LTM)
This shows the destination MAC address in the Link Trace Response (LTR).
Set MD Level
Click this button to configure the MD (Maintenance Domain) level.
Send Loopback
Click this button to have the selected MEP send the LBM (Loop Back Message) to a specified
remote end point.
Send Linktrace
Click this button to have the selected MEP send the LTMs (Link Trace Messages) to a
specified remote end point.

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