gem modify
Function
This command is used to modify the attributes of a GEM Index in an ONT line
profile, to meet the requirement for the binding between the GEM port and the
T-CONT so that the GEM port can carry services properly.
Format
gem modify gem-index { tcont tcontid | encrypt
encrypt |
cascade cascade
| { { priority-queue priority-queue |
downstream-priority-queue { downstream-priority-queue |
adapt } } * |
gem-car { traffic-table-index |
traffic-table-name traffic-table-name } }
} *
Parameters
| Parameter | Description | Value |
|---|---|---|
| gem-index | Indicates the index of a GEM port. | Numeral type. Range: 0-1023. |
| tcont tcontid | Configures the TCONT for a specified GEM port. | Numeral type. Range: 0-127. |
| encrypt encrypt | Configures the encryption function for a specified GEM port. If the encryption function is enabled and the ONU supports the upstream encryption function, the system automatically enables the upstream encryption function. When the encryption function is enabled, the device encrypts the services on the GEM port to enhance the data security. The line encryption algorithms used in GPON systems neither increase overhead nor decrease bandwidth usages. |
Enumerated type. Options: on and off. Default: off. |
| cascade cascade |
Configures the subtending attribute for a specified GEM port. To specify a
port as a subtending port, use this parameter. In FTTB scenario, if an OLT only needs to aggregate ONU traffic, the OLT can enable the cascading function of the GEM index connecting to the ONU. After the function is enabled, the OLT cannot switch the VLAN ID of packets sent by an ONU nor process protocol packets sent by the ONU (except ARP, IGMP, and DHCP L3 relay packets). Enabling the function reduces the packet processing workload on the OLT. |
Enumerated type. Options: on and off. Default: off. |
| priority-queue priority-queue |
Configures the upstream PQ queue priority for a specified GEM port in a
T-CONT. When this parameter is used, the mode parameter in the qos-mode(gpon profile) command must be priority-queue. By default, there are eight queues in the system with ID ranging from 0 to 7. Queue 7 has the highest priority and therefore the traffic of queue 7 must be transmitted with the highest priority. The maximum traffic is determined by the DBA profile bound to the T-CONT. This parameter must match the ONT capability. If the ONT supports only four queues, values 0-3 are valid and values 4-7 are invalid. |
Numeral type. Range: 0-7. Default value: 0. |
| gem-car traffic-table-index |
Binds a traffic table to a specified GEM port. When this parameter is used, the mode parameter in the qos-mode(gpon profile) command must be gem-car. The maximum traffic is determined by the DBA profile bound to the GEM port. |
Numeral type. Range: 0-1023. |
| traffic-table-name traffic-table-name | Binds a traffic profile to a specified GEM port. The traffic profile name is used to specify the traffic profile. When this parameter is used, the mode parameter in the qos-mode(gpon profile) command must be gem-car. The maximum traffic is determined by the traffic profile bound to the GEM port. | Character string type, a string of 1–32 characters. |
| downstream-priority-queue downstream-priority-queue |
Specifies the downstream PQ queue priority for a GEM port used by an ETH
port. When the PQ queue priority mode is configured, users specify the queue for sending the downstream data of the GEM port used by the ETH port. Data needs to be sent strictly based on the PQ queue priority. By default, the system supports eight queues ranging from 0 to 7. 7 indicates the highest priority. Transmission of traffic with the highest priority is ensured preferentially. If queues from 4 to 7 are configured, configuration fails when ONT supports four queues with IDs ranging from 0 to 3.
NOTE:
When the mapping-mode is vlan, priority, vlan-priority,
iptos, or vlan-iptos, the system does not support configuring the downstream PQ
queue priority for a GEM port.
|
Numeral type. Range: 0-7. |
| adapt | Configures the downstream PQ queue priority for a GEM port used by an ETH port as the adapt mode. It indicates OLT does not specify the queue sending the downstream data of the GEM port. The queue is determined by the ONT. | - |
Usage Guidelines
- Run the config command to enter the global config mode, and then run the ont-lineprofile gpon command to enter the the GPON ONT line profile mode.
- After running this command, you need to run the commit command. Then, the configuration performed through this command can take effect.
- The index of the GEM port in different ONT line profile can be the same.
- The downstream PQ priority mode takes effect after the mapping between the downstream PQ priority mode and the ONT ETH port is specified by running the gem mapping command.
Example
To modify the downstream encryption attribute and subtending attribute of GEM
port 1 in ONT line profile 10 to on, do as follows:
huawei(config-gpon-lineprofile-10)#gem modify
{ gem-index<U><0,1023> }:1
{ cascade<K>|downstream-priority-queue<K>|encrypt<K>|gem-car<K>|priority-queue<K
>|tcont<K> }:encrypt
{ encrypt<E><on,off> }:on
{ <cr>|cascade<K>|downstream-priority-queue<K>|gem-car<K>|priority-queue<K>|tcon
t<K> }:cascade
{ cascade<E><on,off> }:on
{ <cr>|downstream-priority-queue<K>|gem-car<K>|priority-queue<K>|tcont<K> }:
Command:
gem modify 1 encrypt on cascade on
huawei(config-gpon-lineprofile-10)#commit
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