Product Description The functional version of the IFU2 is SL91. Application IFU2 boards apply to OptiX RTN 980 NEs to transmit native E1 services, native Ethernet services, MPLS/PWE3 services, or a combination of these services over Integrated IP microwave (native E1+Ethernet). Figure 1 Application scenario of IFU2 boards NOTE: In the preceding figure, if transmitted over Integrated IP microwave, E1 services can be native E1 services or CES/ATM E1 services, and Ethernet services can be native Ethernet services or ETH PWE3 services. Service boards shown in the preceding figure can be Ethernet interface boards, E1 interface boards, or Smart E1 processing boards. Functions and Features The IFU2 receives and transmits one channel of IF signal, and provides a management channel and -48 V power supply to the ODU. Table 1 lists the functions and features that the IFU2 supports. The IFU2 needs to work with the packet switching unit to implement Ethernet service functions. Table 1 Functions and features that the IFU2 supports Function and Feature Description Basic functions Receives and transmits one channel of IF signal. Provides a management channel to the ODU. Supplies the required -48 V power to the ODU. Microwave type Integrated IP microwave NOTE: The Integrated IP microwave is compatible with the Hybrid microwave and the Packet microwave. Service categories Native E1 + Ethernet NOTE: Ethernet services can be native Ethernet services or PWE3-encapsulated packet services. Backplane bus bandwidth 1 Gbit/s AM Supported ATPC Supported E1 priority Supported only in Integrated IP microwave mode with native TDM services being E1 services Microwave working mode See Technical Specifications of the IFU2. Protection 1+1 HSB/FD/SD protection Supported N+1 protection Supported SNCP for TDM services Supported License Air-interface capacity license Supported AM license Supported Clock Physical layer synchronization Clock at the air interface Physical-layer clock protection Supports the following clock protection schemes: Protection based on clock source priorities Protection by running the SSM protocol Protection by running the extended SSM protocol Packet time synchronization Supports IEEE 1588v2 time synchronization. Supports ITU-T G.8275.1 time synchronization. Packet frequency synchronization Not supported Data communication network (DCN) Inband DCN Supported. The DCN bandwidth is configurable. Outband DCN Supports one DCC that is composed of three DCC bytes. Ethernet service functions See Table 2. MPLS functions See the description of Multiprotocol label switching (MPLS)/Pseudo wire emulation edge-to-edge (PWE3) functions provided in the section for the system control, switching, and timing board. PWE3 functions O&M Loopback Supports the following loopback types: Inloops and outloops at IF ports Inloops and outloops at MUX ports Inloops at the MAC layer of IF_ETH ports NOTE: An IF_ETH port is an internal Ethernet port on the IF board operating in Integrated IP microwave mode and is used to receive or transmit Ethernet services transmitted in Integrated IP microwave mode. Cold reset and warm reset Supported In-service FPGA loading Supported PRBS BER test at IF ports Supported Queries of board manufacturing information Supported Queries of the board power consumption Supported Board temperature monitoring Supported Board power monitoring Supported Table 2 Ethernet service functions that the IFU2 supports Function and Feature Description Services Native Ethernet services E-Line services Port-based E-line services VLAN-based E-line services E-Line services carried by QinQ links E-LAN services E-LAN services based on IEEE 802.1d bridges E-LAN services based on IEEE 802.1q bridges E-LAN services based on IEEE 802.1ad bridges PWE3 Ethernet services E-Line services carried by PWs E-Aggr services carried by PWs E-LAN services carried by PWs, that is, virtual private LAN services (VPLSs), supported only when the system control, switching, and timing board is an SLB2CSHN board ERPS Supports the ERPS function that complies with ITU-T G.8032 v1/v2. OAM Supports IEEE 802.1ag-compliant ETH-OAM function. Supports IEEE 802.3ah-compliant ETH-OAM function. Supports packet loss, delay, and delay variation measurement functions that comply with ITU-T Y.1731. LAG Supported Spanning tree protocol Supports Multiple Spanning Tree Protocol (MSTP) that runs only Common and Internal Spanning Tree (CIST) instances. This type of MSTP provides the same functions as Rapid Spanning Tree Protocol (RSTP). IGMP snooping Supported Quality of service (QoS) functions See the description of QoS functions provided in the section for the system control, switching, and timing board. RMON Supported Working Principle and Signal Flow This section describes how to process one IF signal in Integrated IP microwave mode, and it serves as an example to describe the working principle and signal flow of the IFU2. Functional Block Diagram Figure 1 Functional block diagram of the IFU2
