User manual

Page 101
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Fault Management
Utilize this screen for diagnostics regarding your VDSL PTM or Ethernet WAN connection.
Fault Management is compliant with IEEE 802.1ag for Connectivity Fault Management.
After selecting Diagnostics -> Fault Management from the left navigation bar, select values for the Maintenance Domain (MD)
Level, Destination MAC Address to test and enter the applicable (if any) 802.1Q VLAN ID.
Reference IEEE 802.1ag for additional details.
The individual elds on this screen are dened as follows:
Field Name Description
Maintenance Domain (MD) Level [0-7] Maintenance Domains are management space on a network, typically owned
and operated by a single entity. MDs are congured with Names and Levels, where
the eight levels range from 0 to 7. A hierarchical relationship exists between domains
based on levels. The larger the domain, the higher the level value.
Looback Message (LBM) Used on-demand as the rst step to isolate a fault.
Maintenance End Point (MEP) Points at the edge of the domain, denes the boundary for the domain.
Linktrace Message (LTM) Identies all maintenance points in the entity.