GPON Access Port Management(display port dba bandwidth-assignment-mode)

display port dba bandwidth-assignment-mode(gpon)

Function

This command is used to query the dynamic bandwidth allocation (DBA) mode of a gigabit-capable passive optical network (GPON) port. The transmission delays and throughputs of packets in different DBA modes are different.

Format

display port dba bandwidth-assignment-mode { portid | all }

Parameters

Parameter	Description
all	Queries the DBA modes of all the ports in a specified slot.
portid	Indicates the ID of the GPON port to be queried.

Modes

GPON mode, GPBD, GPFD

Level

Operator level

Usage Guidelines

Run the config command to enter global config mode, and then run the interface gpon command to enter GPON mode.

Example

To query the DBA mode of GPON port 0/3/3, do as follows:

huawei(config-if-gpon-0/3)#display port dba bandwidth-assignment-mode                               
{ all<K>|portid<U><0,7> }:3                                                                                                         
 Command:
         display port dba bandwidth-assignment-mode 3
 ----------------------------------------------------------------
   F/S/P                  Bandwidth-assignment-mode
 ----------------------------------------------------------------
   0/3/3                  manual
 ----------------------------------------------------------------

System Response

• The system displays the queried result when the command runs successfully.
• The following table describes the parameters in response to this command.

  Parameter	Description
  F/S/P	Indicates the shelf ID, slot ID, and port ID.
  Bandwidth-assignment-mode	Indicates the bandwidth assignment mode. It can be the min-loop-delay, max-bandwidth-usage, and manual mode: min-loop-delay: Indicates that this mode ensures the minimum bandwidth delay. In this mode, the single-frame assignment is adopted, so the bandwidth delay is short. The TDM service has strict requirements on delay, so choose this mode for TDM services. max-bandwidth-usage: Indicates that this mode ensures the maximum bandwidth usage. In this mode, the DBA calculation assignment is adopted. For the GPON board, DBA calculation period is eight frame periods (125 µs), and for the XGPON board, DBA calculation period is four frame periods (125 µs). This mode features heavy traffic bursts, long delay, but high bandwidth usage. Services, such as IPTV and high-speed Internet access, require high bandwidth but not sensitive to delay, so adopt this mode for such services. manual : Indicates that the DBA parameters are configured manually. If the preceding two modes do not meet customers' requirements, you can switch to this mode and manually configure the DBA parameters (bandwidth delay and bandwidth) based on service requirements.

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