OMCI规范更新：G.988 Amendment 2 - ONU管理与控制接口标准

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"这份文档是国际电信联盟（International Telecommunication Union, ITU）发布的G.988系列标准的Amendment 2版本，于2016年6月更新。G.988原本是关于光纤接入网络（Optical Line Systems for Local and Access Networks）中的ONU（光网络单元）管理与控制接口（ONU Management and Control Interface, OMCI）的技术规范。OMCI在GPON（吉比特无源光网络）系统中起着关键作用，它定义了ONU与上层网络设备之间的通信协议，用于配置、监控和维护光纤网络中的用户端设备。在该标准中，OMCI被设计为一种基于IP的协议，使得网络管理员能够通过以太网接口对ONU进行远程管理。它支持多种功能，包括但不限于服务质量(QoS)管理、故障检测和报告、软件升级、性能监控以及用户数据管理。Amendment 2可能对原有的OMCI规范进行了扩展或优化，以适应新的技术发展和网络运营需求。 G.988系列标准覆盖了广泛的电信领域，从最初的G.100到G.199，涉及的是所有模拟载波传输系统的通用特性；G.200至G.299关注的是金属线线路的国际电话系统特性；而G.400至G.499则协调无线电电话与线路电话的关系；G.450至G.499主要讨论传输媒体和光学系统特性；G.600至G.699关注数字终端设备；G.700至G.799涉及数字网络；最后，G.800至G.899涵盖了更广泛的主题，如数字网络架构和技术。总体来说，这份文档对于理解GPON网络的管理和维护至关重要，特别是对于网络运营商、设备制造商和网络技术人员，它提供了一套统一且高效的标准来管理和优化光纤接入网络的性能，确保了服务质量的稳定和网络的可靠运行。"

Rec. ITU-T G.988 (2012)/Amd.2 (06/2016) 1

Recommendation ITU-T G.988

ONU management and control interface (OMCI) specification

Amendment 2

1) Clause 2, References

In clause 2, add the following references in appropriate order:

[ITU-T G.997.2] Recommendation ITU-T G.997.2 (2015), Physical layer management for

G.fast transceivers.

[ITU-T G.9700] Recommendation ITU-T G.9700 (2014), Fast access to subscriber terminals

(G.fast) – Power spectral density specification.

[ITU-T G.9701] Recommendation ITU-T G.9701 (2014), Fast access to subscriber terminals

(G.fast) – Physical layer specification.

2) Clause 9.8.1, Physical path termination point CES UNI

In clause 9.8.1, replace the existing text for CES loopback configuration as follows:

CES loopback configuration: This attribute specifies and reports the loopback configuration

of the physical interface.

0 No loopback

1 Payload loopback

2 Line loopback

3 OS-directed loopback 1 (loopback from/to PON side)

4 OS-directed loopback 2 (loopback from/to CES UNI side)

5 OS-directed loopback 3 (loopback of both PON side and CES UNI

side)

6 Manual button-directed loopback (read only)

7 Network-side code inband-directed loopback (read only)

8 SmartJack-directed loopback (read only)

9 Network-side code inband-directed loopback (armed; read only)

10 Remote-line loopback via FDL

11 Remote-line loopback via inband code

12 Remote-payload loopback.

Upon ME instantiation, the ONU sets this attribute to 0. (R, W) (mandatory)

(1 byte)

3) Clause 9.12.18, OpenFlow config data

Add the following new ME clause 9.12.18 to clause 9.12 as follows:

9.12.18 OpenFlow config data

This managed entity contains the configuration data whose underlying transport method is OpenFlow.

Instances of this managed entity are created and deleted by the OLT.

2 Rec. ITU-T G.988 (2012)/Amd.2 (06/2016)

Relationships

An instance of this managed entity is associated with each instance per OpenFlow

transportation channel. There might be more than one OpenFlow transportation channel per

ONU.

Attributes

Managed entity ID: This attribute uniquely identifies each instance of this managed entity.

(R, set by create) (mandatory) (2 bytes)

TP type: This attribute specifies the type of ANI-side termination point associated

with this managed entity.

1 GEM interworking TP

(R, W, set by create) (mandatory) (1 byte)

TP pointer: This attribute points to the instance of the TP associated with this

OpenFlow configuration data. The type of the associated TP is determined

by the TP type attribute. (R, W, set by create) (mandatory) (2 bytes)

Version: This integer attribute reports the version of the OpenFlow protocol in use.

The ONU should deny an attempt by the OLT to set or create a value that

it does not support. The value 0 indicates that no particular version is

specified. (R, W, set by create) (mandatory) (1 byte)

D/S OpenFlow message: This attribute specifies the D/S OpenFlow message which is carried

over the OMCC channel. (R, W) (mandatory) (24N bytes)

D/S forwading control: This Boolean attribute indicates the current D/S OpenFlow message

is ready to be sent (true) or not. The default value is false. (R, W) (mandatory)

(1 byte)

D/S receiving status: This Boolean attribute indicates the ONU is ready to accept a new

downstream packet (true) or not. The default value is false. (R) (mandatory)

(1 byte)

U/S OpenFlow message: This attribute specifies the U/S OpenFlow message which is carried

over the OMCC channel. (R, W) (mandatory) (24N bytes)

U/S receiving control: This Boolean attribute controls the current U/S OpenFlow message is

dafely received (true) or not. The default value is false. (R, W) (mandatory)

(1 byte)

U/S forwarding status: This Boolean attribute reports the current U/S OpenFlow message is

ready to be sent (true) or not. The default value is false. (R) (mandatory)

(1 byte)

Circuit ID: This attribute identifies the first access information of the user

(R, W) (Optional) (24N byte)

Remote ID: This attribute identifies the second access imformation of the user as an

addition identifier to circuit ID. (R, W) (Optional) (24N byte)

Administrative state: This attribute locks (1) and unlocks (0) the functions performed by the

MPLS pseudowire TP. Administrative state is further described in

clause A.1.6. (R, W) (optional) (1 byte)

Operational state: This attribute reports whether the managed entity is currently capable of

performing its function. Valid values are enabled (0) and disabled (1). (R)

(optional) (1 byte)

剩余39页未读，继续阅读

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