Cambium Networks PTP 820 Series, User Manual, Page: 679 / 1149

Chapter 12: Alarm Management and Troubleshooting Performing Diagnostics
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Table 123 SOAM MA/MEG Configuration Parameters
Parameter Definition
MD (ID, Name) Select the MD to which you are assigning the MEP.
MA/MEG short name Enter a name for the MEG (up to 44 alphanumeric characters).
MEG Level Select a MEG level (0-7). The MEG level must be the same for MEGs on
both sides of the link. Higher levels take priority over lower levels.
If MEGs are nested, the OAM flow of each MEG must be clearly
identifiable and separable from the OAM flows of the other MEGs. In
cases where the OAM flows are not distinguishable by the Ethernet layer
encapsulation itself, the MEG level in the OAM frame distinguishes
between the OAM flows of nested MEGs.
Eight MEG levels are available to accommodate different network
deployment scenarios. When customer, provider, and operator data path
flows are not distinguishable based on means of the Ethernet layer
encapsulations, the eight MEG levels can be shared among them to
distinguish between OAM frames belonging to nested MEGs of
customers, providers and operators. The default MEG level assignment
among customer, provider, and operator roles is:
•
The customer role is assigned MEG levels 6 and 7.
•
The provider role is assigned MEG levels 3 through 5.
•
The operator role is assigned MEG levels: 0 through 2.
The default MEG level assignment can be changed via a mutual
agreement among customer, provider, and/or operator roles.
The number of MEG levels used depends on the number of nested MEs
for which the OAM flows are not distinguishable based on the Ethernet
layer encapsulation.
CCM Interval The interval at which CCM messages are sent within the MEG. Options
are:
•
1 second (default)
•
10 seconds
•
1 minute
•
10 minutes
It takes a MEP 3.5 times the CCM interval to determine a change in the
status of its peer MEP. For example, if the CCM interval is 1 second, a
MEP will detect failure of the peer 3.5 seconds after it receives the first
CCM failure message. If the CCM interval is 10 minutes, the MEP will
detect failure of the peer 35 minutes after it receives the first CCM failure
message.
Service ID Select an Ethernet service to which the MEG belongs. You must define
the service and add service points before you configure the MEG.