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SDH,MSTP,PTN-HUAWEI EX1 SL91 1x10GE interface board
Product Description
Version Description
The functional version of EX1 boards is SL91
Application
EX1 boards provide large-capacity Ethernet aggregation links between a microwave network and the local metropolitan area network
Access of Ethernet Services at an Aggregation Site for Upstream Transmission
Product Details:
Product Description
Version Description
The functional version of EX1 boards is SL91.
Application
EX1 boards provide large-capacity Ethernet aggregation links between a microwave network and the local metropolitan area network.
Access of Ethernet Services at an Aggregation Site for Upstream Transmission
The upstream capacity of a high-density aggregation site is usually higher than 1 Gbit/s. A single port on an EX1 board can provide a 10 Gbit/s bandwidth. It is unnecessary to configure multiple GE ports into a LAG for load sharing. The use of EX1 boards can reduce deployment costs and simplify installation.
Functions and Features
EX1 board receive/transmit, process, and converge 1x10GE service signals.
Table 1 lists the functions and features supported by EX1 boards. EX1 boards implement Ethernet service functions by working with packet switching units on the CSHNA board.
Table 1 Functions and features that EX1 boards support
Parent topic: EX1
Working Principle and Signal Flow
This section describes how the function units of an EX1 board process 10GE signals.
Function Block Diagram
Figure 1 EX1 board function block diagram
Signal Processing in the Receive Direction
Table 1 Signal processing in the receive direction of an EX1 board
Version Description
The functional version of EX1 boards is SL91.
Application
EX1 boards provide large-capacity Ethernet aggregation links between a microwave network and the local metropolitan area network.
Access of Ethernet Services at an Aggregation Site for Upstream Transmission
The upstream capacity of a high-density aggregation site is usually higher than 1 Gbit/s. A single port on an EX1 board can provide a 10 Gbit/s bandwidth. It is unnecessary to configure multiple GE ports into a LAG for load sharing. The use of EX1 boards can reduce deployment costs and simplify installation.
Functions and Features
EX1 board receive/transmit, process, and converge 1x10GE service signals.
Table 1 lists the functions and features supported by EX1 boards. EX1 boards implement Ethernet service functions by working with packet switching units on the CSHNA board.
Table 1 Functions and features that EX1 boards support
| Function and Feature | Description | |
| Basic functions | Receives/Transmits 10GE service signals, and processes these signals by working with the packet switching unit. | |
| Port specifications | 10GE port | One (XFP optical module) |
| Backplane bus bandwidth | 10 Gbit/s | |
| Switching mode | Centralized mode NOTE: When a board works in centralized mode, all Ethernet services carried on the board must be forwarded by the packet switching unit of the cooperating system control board. |
|
| Port attributes | Working mode | Supports the 10 Gbit/s full-duplex mode and supports the LAN or WAN mode. |
| Tag attributes | The tag attribute can be tag aware, access, or hybrid. Sets and queries the tag attribute of a port. |
|
| Jumbo frames | Supports jumbo frames with a maximum length of 9600 bytes. | |
| Traffic control | Supports port-based traffic control that complies with IEEE 802.3x. | |
| 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 or CSHNA board |
|
| LAG | Inter-board LAG | Supported |
| Intra-board LAG | Supported | |
| ERPS | Supported (complies with ITU-T G.8032 v1/v2) | |
| MPLS functions | Refer to the description of MPLS/PWE3 functions provided in the sections about system control, switching, and timing boards. | |
| PWE3 functions | ||
| Spanning Tree Protocol (STP) | 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 | |
| LPT | Supported | |
| Port mirroring | Supported | |
| LLDP | Supported | |
| QoS | DiffServ | Supports simple traffic classification by specifying per-hop behaviors (PHBs) for traffic flows based on their QoS information, such as C-VLAN priorities, S-VLAN priorities, DSCP values, or MPLS EXP values. |
| Complex traffic classification | Supports traffic classification based on the following information carried by packets: SAMC, DMAC, C-VLAN IDs, S-VLAN IDs, C-VLAN priorities, S-VLAN priorities, C-VLAN IDs + C-VLAN priorities, S-VLAN IDs + S-VLAN priorities, or DSCP values. | |
| Committed access rate (CAR) | Provides the CAR function for traffic flows at ports. | |
| Queue scheduling policies | SP WRR SP+WRR |
|
| Congestion avoidance | Supports tail drop and weighted random early detection (WRED). | |
| Traffic shaping | Supports shaping for a specified port, priority queue, or service flow, and supports a step of 64 kbit/s for the peak information rate (PIR) and committed information rate (CIR). | |
| ETH OAM | Ethernet service OAM | Supports ETH OAM functions that comply with IEEE 802.1ag. Supports frame loss measurement, frame delay measurement, and delay variation measurement functions that comply with ITU-T Y.1731. |
| Ethernet port OAM | Supports ETH OAM functions that comply with IEEE 802.3ah. | |
| Remote network monitoring (RMON) | Supported | |
| Clock | Physical layer synchronization | Synchronous Ethernet |
| Physical-layer clock protection | Protection implemented by providing clock sources with different priorities Protection implemented by running the Synchronization Status Message (SSM) protocol Protection implemented 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 | Supports IEEE 1588v2 frequency synchronization. Supports IEEE 1588 ACR. |
|
| Data communication network (DCN) | Inband DCN | Each port provides one inband DCN channel. |
| Operation and management | Loopback | Supports inloops at the PHY layer of Ethernet ports. Supports inloops at the MAC layer of Ethernet ports. |
| Warm and cold resetting | Supported | |
| Manufacturer information query | Supported | |
| Power consumption query | Supported | |
| Voltage monitoring | Supported | |
| Temperature monitoring | Supported | |
| XFP module information query | Supported | |
Working Principle and Signal Flow
This section describes how the function units of an EX1 board process 10GE signals.
Function Block Diagram
Figure 1 EX1 board function block diagram
Signal Processing in the Receive Direction
Table 1 Signal processing in the receive direction of an EX1 board
| Step | Function Unit | Processing Flow |
| 1 | 10GE signal access unit | Receives 10GE signals. Performs restructuring, decoding, and serial/parallel conversion for 10GE signals. Performs frame delimitation, preamble stripping, cyclic redundancy check (CRC), and Ethernet performance measurement for frame signals. |
| 2 | Ethernet processing unit | Adds tags identifying ingress ports to Ethernet data frames. Processes VLAN tags in Ethernet data frames. Processes labels in MPLS/PWE3 packets. Performs QoS processing such as traffic classification and CAR traffic monitoring for Ethernet data frames. Forwards Ethernet data frames to the logic processing unit. |
| 3 | Logic processing unit | Transmits Ethernet data frames to the main and standby packet switching units. |
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