Chapter 1: Product description
Ethernet bridging
Page 1-30
Ethernet bridging
This section describes how the PTP 670 ODU processes Ethernet data, and how Ethernet ports
are allocated to the Data Service, Second Data Service, Management Service and Local
Management Service.
Ethernet ports
The PTP 670 Series ODU has three Ethernet ports:
•
Main PSU: The Main PSU port provides a copper Ethernet interface for 100BASE-TX and
1000BASE-T, and accepts power from the AC Power Injector 56V, AC+DC Enhanced Power
Injector 56V or CMM5 to the ODU using a proprietary power over Ethernet (PoE) method.
•
Aux: The Aux port provides a copper Ethernet interface for 100BASE-TX and 1000BASE-T,
and supplies power from the ODU to external equipment using standards-based power
over Ethernet (PoE) complying with IEEE 802.3at.
•
SFP: The SFP port is a small format pluggable receptacle accepting copper or optical plug-
in modules supplied as part of the SFP module kit.
Data and management services
The PTP 670 Series ODU supports four different types of virtual circuits providing data and
management services.
•
Data Service: This transparent service carries customer’s data between Ethernet ports at
the local ODU and Ethernet ports at an associated remote ODU. In the HCMP topology, the
Data Service additionally provides bridging between Ethernet ports at the same ODU.
•
Second Data Service: This optional point-to-point transparent service offers a second
virtual circuit for customer’s data between one of the Ethernet ports at the local ODU and
one of the Ethernet ports at an associated remote ODU. The Data Service and Second Data
Service are always mapped to different ports at an ODU. The Data traffic of the two
services are distinct and are separately bridged to the appropriate configured remote ODU
port. The Second Data Service is not supported in the HCMP topology.
•
Management Service: This transparent service connects management systems at both
ends of the link with the embedded management agents in the ODUs. The Management
Service may be configured as:
o
In-Band Management
o
Out-of-Band Management
•
Local Management Service: The Local Management service provides a connection to the
embedded management agent, isolated from the customer data network. Management
frames in the Local Management Service are not forwarded over the wireless link.
