Version Description The functional versions of the CSHU is SL91. Application CSHU boards function as system control, switching, and timing boards on OptiX RTN 950 NEs building Hybrid/Packet radio networks. In this scenario, these boards schedule and transmit time division multiplexing (TDM) and Ethernet services. CSHU boards can also function as system control, switching, and timing boards on TDM radio networks like CST boards. Application of CSHU Boards on NEs Building Hybrid Radio Networks Figure 1 Application scenario of CSHU boards (1) NOTE: IF boards shown in the preceding figure must be general-purpose IF boards or XPIC IF boards working in native E1+Ethernet mode or native STM-1+Ethernet mode. Service boards shown in the preceding figure can be E1 interface boards, STM-1 interface boards, or Ethernet interface boards. Application of CSHU Boards on NEs Building Packet Radio Networks Figure 2 Application scenario of CSHU boards (2) NOTE: IF boards shown in the preceding figure must be general-purpose IF boards or XPIC IF boards working in native E1+Ethernet mode or native STM-1+Ethernet mode. Service boards shown in the preceding figure can be Smart E1 processing boards or Ethernet interface boards. Application of CSHU Boards on NEs Building L3VPNs Figure 3 Application scenario of CSHU boards (3) NOTE: IF boards shown in the preceding figure must be general-purpose IF boards or XPIC IF boards working in native E1+Ethernet mode or native STM-1+Ethernet mode. Service boards shown in the preceding figure can be Ethernet interface boards. Functions and Features The CSHU provides 10 Gbit/s packet switching, full time-division cross-connection, system control and communication, and clock processing functions. It provides auxiliary ports and management ports. Table 1 lists the functions and features that the CSHU supports. Table 1 Functions and features that the CSHU supports Function and Feature Description Basic functions Switching capability Provides a 10 Gbit/s packet switching capacity. Cross-connect capacity Supports full time-division cross-connections (equivalent to 32x32 VC-4s) at the VC-12, VC-3, or VC-4 level. System control and communication Manages, monitors, and controls the running status of the IDU, and works as a communication service unit between the NMS and boards, allowing the NMS to control and manage the NE. Clock Clock source Provides the system clock and frame headers for service signals and overhead signals for the other boards when tracing an appropriate clock source. The traced clock source can be any of the following: External clock SDH line clock PDH tributary clock Microwave link clock Synchronous Ethernet clock 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 Time synchronization Supports IEEE 1588v2 time synchronization. Supports ITU-T G.8275.1 time synchronization. IEEE 1588 adaptive clock recovery (ACR) Supported External clock port 1 External time port 2 Data communication network (DCN) Outband DCN Supports a maximum of 13 DCCs. Inband DCN The DCN bandwidth is configurable. Network management protocols Huawei embedded control channel (HWECC) protocol Supported IP protocol Supported L2 DCN Supported Simple Network Management Protocol (SNMP) Provides the SNMP Get and Set functions for managing devices. NE virtualization Supported Multiprotocol label switching (MPLS)/pseudo wire emulation edge-to-edge (PWE3) functions Supported See Table 2. Hierarchy VPN functions Supported. The NE can function only as cell site gateway (CSG). See Table 4 Native IP Supported. See Table 5 EBGP Option A Supported. Anti-Theft function Supported. Quality of service (QoS) functions Supported See Table 3. Protection 1+1 hot standby Supported Auxiliary ports and management ports NMS port 1 NMS serial port 1 NE cascade port 1 Outdoor cabinet monitoring port 1 The specifications of port comply with RS-485. Mini USB port 1 This USB management port allows an NE to be connected to and maintained by a Web LCT-installed computer. Type-A USB port 1 Connects to a USB flash drive, which can be used to back up/restore databases and upgrade NE software. Houses a WLAN module to implement wireless NMS access. O&M Warm reset and cold reset Supported In-service FPGA loading Supported Queries of board manufacturing information Supported Queries of the board power consumption Supported Board temperature monitoring Supported Board power monitoring Supported Detection of indicators on the other boards Supported Hot swapping Supported The packet switching unit of the CSHU can work with a service board to implement MPLS/PWE3 functions. Table 2 provides details about these functions. Table 2 MPLS/PWE3 functions The packet switching unit of the CSHU can work with a service board to implement QoS functions. Table 3 provides details about these functions.
