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The following table describes the fields in this screen.
Table 122 Maintenance > Diagnostic > 802.1ag
LABEL
802.1ag Connectivity Fault Management
Maintenance
Domain (MD)
Level
Destination
MAC Address
802.1Q VLAN
ID
VDSL Traffic
Type
Loopback
Message (LBM)
Linktrace
Message (LTM)
Set MD Level
Send Loopback
Send Linktrace
37.5 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
VMG sends an OAM F4 or F5 packet to the DSLAM or ATM switch and then returns it to the VMG.
The test result then displays in the text box.
ATM sets up virtual circuits over which end systems communicate. The terminology for virtual
circuits is as follows:
•
Virtual Channel (VC)
•
Virtual Path (VP)
•
Virtual Circuits
Figure 165 Virtual Circuit Topology
Chapter 37 Diagnostic
DESCRIPTION
Select a level (0-7) under which you want to create an MA.
Enter the target device's MAC address to which the VMG performs a CFM loopback test.
Type a VLAN ID (0-4095) for this MA.
This shows whether the VDSL traffic is activated.
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.
This shows the destination MAC address in the Link Trace Response (LTR).
Click this button to configure the MD (Maintenance Domain) level.
Click this button to have the selected MEP send the LBM (Loop Back Message) to a specified
remote end point.
Click this button to have the selected MEP send the LTMs (Link Trace Messages) to a
specified remote end point.
Logical connections between ATM devices
A bundle of virtual channels
A series of virtual paths between circuit end points
VMG1312-Bx0D User's Guide
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