ELTEX LTP-4X, Operation Manual

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Adhere to the rule: Amax = 256 / N – 1, where Amax is the maximum number of allocations per
single ONT, and N is the number of ONTs per channel. If the calculated amount of services exceeds
ONT Amax, configure a combination of multiple services into a single allocation. For more detailed
information, see Section 29.1.2.
DBA parameters are configured in the dba profile. These parameters allow specification of any
T-CONT type described in G.984.3. First of all, choose service-class to define the basic DBA
algorithm. After that, configure status-reporting to define the type of ONT queues status report.
The fixed-bandwidth , guaranteed-bandwidth , and besteffort-bandwidth parameters define the
fixed, guaranteed, and best-effort bandwidth correspondingly. Table 29.1 shows the
correspondence between the
dba profile settings and T-CONT types.
Table 29.1 – DBA Profile Configuration and T-CONT Types
T-CONT
type 1
T-CONT
type 2
T-CONT
type 3
T-CONT
type 4
T-CONT
type 5
service-class cbr voip type5 type5 type5
status-reporting - + + + +
fixed-bandwidth + - - - +
guaranteed-bandwidth - + + - +
besteffort-bandwidth - - + + +
The following rules apply to dba profile assignment:
—
When an ONT service is assigned a dba profile, an Alloc-ID is created for the ONT on the OLT
side, and a corresponding T-CONT is configured on the ONT side.
—
If different ONTs are assigned the same profile, they will each have a separate Alloc-ID
created with the same allocation parameters.
—
If the same dba profiles are assigned to different services of the same ONT with allocation-
scheme share-t-cont, these services will work in the same allocation and have the same
allocation parameters.
—
If the same dba profiles are assigned to different services of the same ONT with allocation-
new-t-cont, these services will work in different allocations, and the number of Alloc-IDs
created for the ONT equals the number of assigned dba profiles.
29.1 DBA Profiles Assignment
29.1.1 Services in Different T-CONTs
Two Alloc-IDs will be allocated for ONTs in the OLT. Each service will operate in its allocation.
There will be two T-CONTs on the ONT side corresponding to the allocations.
Step 1. Each ONT should have two services in different T-CONTs. To do this, assign two dba profiles by
using the profile dba command.
LTP-8X(config)# profile dba ServiceInternet
LTP-8X(config-dba)("ServiceInternet")# exit
LTP-8X(config)# profile dba ServiceVoIP
LTP-8X(config-dba)("ServiceVoIP")# exit