Huawei SSN1ETF8 SSND0ETF8A11 SSND0PETF811 ETF8 Description

OSN 3500 is a new-generation optical transmission system developed by Huawei. It adopts a unified switching architecture and can function as an MPLS/MPLS-TP-based packet device or a TDM device. When working with other devices of Huawei, OSN 3500 supports various networking modes, including the pure packet mode, hybrid networking (packet + TDM) mode, and pure TDM mode, achieving optimal processing for packet services and traditional SDH services. Thus, OSN 3500 efficiently transmits voice and data services over the same platform.

Version Description

The PETF8 is available in one functional version, namely, N1.

Version Mapping

Board	Start Version
N1PETF8	V100R009C03

Board Updates

This section describes the hardware updates in V200R013C30 and later versions as well as the reasons for the updates. Any product versions that are not listed in the document means that they have no hardware updates.

Hardware Updates in V200R015C30

Type	Description
Add	New add the function "ETH-TRUNK".
Add	New add the function "LLDP (Link Layer Discovery Protocol)".

Application

The PETF8 is mainly used in the packet data transmission field to transmit/receive data packets, manage bandwidths, and realize switching of data packets.

Figure 1 shows the typical networking and application of the PETF8. The PETF8 works with the cross-connect board that provides the packet switching function to meet the requirement of packet features. With this board, the TDM domain can be overlapped with the packet domain on the OptiX OSN equipment to transmit data in the two domains. In this way, the equipment realizes the smooth evolution from the MSTP network to the packet switching network.

Figure 1 Networking and application of the PETF8

Functions and Features

PETF8 boards receive/transmit 8xFE electrical signals and work with PEG8/PEG16 boards to process services.

Table 1 lists the functions and features supported by PETF8 boards. Functions and Features lists the functions and features supported by PETF8 boards that work with PEG8 boards. Functions and Features lists the functions and features supported by PETF8 boards that work with PEG16 boards.

**Table 1** Functions and features supported by PETF8 boards
Function and Feature	Description
Basic functions	Receives/Transmits and processes 8xFE electrical signals.
Port types	Uses the RJ45 connector and meets the specifications of the 100BASE-TX physical layer provided in IEEE 802.3.
Port characteristics	Pluggable optical module	Not supported
	Single-fiber bidirectional optical module	Not supported
	Working modes	100 Mbit/s full-duplex or auto-negotiation for FE electrical ports (In auto-negotiation mode, only the 100 Mbit/s full-duplex working mode is supported.)
	Flow control at ports	Auto-negotiation mode: not supported
	Flow control at ports	Non-autonegotiation mode: not supported
	Query/Setting of port status	Supported
	Query of port types	Not supported
	Query/Setting of optical power thresholds	Not supported
	Query/Setting of unidirectional-mode	Not supported
Service specifications	Service bearing modes	MPLS: supported
		QinQ: supported
		Port: supported
	MFL for ports	When working with PEG16 boards, PETF8 boards do not support the setting of the packet length, which takes the default value of 9600 bytes. When working with PEG8 boards, PETF8 boards support the setting of the packet length, which ranges from 960 bytes to 4600 bytes. After the setting becomes valid, the length of a packet that enters or exits a port is restricted by the MFL preset for the port.
	MTU for services	For packet services carried by PWs, PETF8 boards support the setting of the packet length, which ranges from 64 bytes to 9600 bytes. For packet services carried in other modes, PETF8 boards do not support the setting of the packet length.
	Ethernet service capability	E-Line service: supported
		E-LAN service: supported
		E-AGGR service: When working with PEG16 boards, PETF8 boards support the E-AGGR service.
	Formats of Ethernet data frames	Supports the encapsulation in IEEE 802.3 format, Ethernet II format, or IEEE 802.1q/p format.
	Jumbo frame	When working with PEG8 boards, PETF8 boards support a jumbo frame with a maximum length of 4600 bytes. When working with PEG16 boards, PETF8 boards support a jumbo frame with a maximum length of 9600 bytes.
	MS-PW	Supports static MS-PWs.
Protection schemes	Tunnel APS	Supports the 1+1 (single-ended/dual-ended) and 1:1 (dual-ended) tunnel APS in compliance with ITU-T Y.1720 and ITU-T G.8131.
	PW APS	Supports the PW FPS (single-ended), 1+1 (single-ended/dual-ended) and 1:1 (dual-ended) PW APS when working with the PEG8 in compliance with ITU-T Y.1720 and ITU-T G.8131. Does not support PW APS when working with the PEG16.
	MRPS	Supports MRPS. Protection group type: two-fiber bidirectional Switching type: wrapping switching
	LAG	Supports manual link aggregation and static link aggregation. Supports the load sharing mode and load non-sharing mode. Complies with IEEE 802.3ad and IEEE 802.1AX.
	MC-LAG	Supports MC-LAG when working with the PEG8 in compliance with 802.3ad and IEEE 802.1AX. Does not support MC-LAG when working with the PEG16.
	MSTP	Supported, which complies with IEEE 802.1s.
	LPT	Point-to-point LPT: supported
	LPT	Point-to-multipoint LPT: supported
	ETH-TRUNK	Supported
Synchronization	Synchronous Ethernet Clock	PETF8 boards support eight channels of synchronous Ethernet clocks.
Synchronization	1588v2	PETF8 boards support eight channels of IEEE 1588v2 time synchronization and clock synchronization.
Maintenance features	ETH OAM	Ethernet Service OAM^a: Supports CC, LB and LT. These functions comply with IEEE 802.1ag. Supports LM and 2DM. These functions comply with ITU-T Y.1731.
	ETH OAM	Ethernet Port OAM^a: Supports OAM auto-discovery, fault detection, and link performance monitoring. These functions comply with IEEE 802.3ah.
	Distributed MPLS OAM/Centralized MPLS OAM	MPLS tunnel OAM^a: Supports CV, FFD, BDI, FDI, Tunnel ping, and Tunnel traceroute. These functions comply with ITU-T Y.1711.
	Distributed MPLS OAM/Centralized MPLS OAM	MPLS PW OAM^a: Supports CV, FFD, BDI, FDI, PW traceroute, and PW ping. These functions comply with ITU-T Y.1711.
	MPLS-TP OAM NOTE: When working with PEG8 boards, PETF8 boards support MPLS-TP OAM.	MPLS-TP tunnel OAM^a: Supports CC, RDI, AIS, LB, LT, LM, 1DM, TST, LCK, and 2DM. These functions comply with ITU-T G.8113.1.
		MPLS-TP PW OAM^a: Supports CC, RDI, AIS, LB, LT, LM, 1DM, TST, LCK, CSF, and 2DM. These functions comply with ITU-T G.8113.1.
	Loopback capability	PHY layer at Ethernet ports: supports inloops.
	Loopback capability	MAC layer at Ethernet ports: supports inloops and outloops.
	RMON	Supported
	Hot board swapping	Supported
	Port Mirroring	Supported
Inband DCN	Supported
LLDP	Supported
HQoS	Supports service WRED policies, port WRED policies, WFQ policies, PW polices, QinQ polices, V-UNI ingress policies, V-UNI egress policies, port policies, port shaping.
IGMP Snooping	Protocol enabling	Supported
	Port aging time	Supported
	Fast leave	Supported
	Discarding of unknown broadcast packets	Supported
	Static broadcast entry	Supported
Query of electronic labels	Supported
NOTE: a: MPLS tunnel OAM, MPLS PW OAM, MPLS-TP tunnel OAM, MPLS-TP PW OAM, and ETH OAM share OAM resources.

Working Principle and Signal Flow

The PETF8 consists of the access and converging module, control and driving module, voltage detecting module, clock module, and power module.

Figure 1 shows the functional block diagram of the PETF8.

Figure 1 Functional block diagram of the PETF8

Upstream Direction

The services in the upstream direction are accessed by the FE ports. The service packets are added with different VLAN tags according to the ingress ports. Then, the services are transmitted to the GE port on the backplane side. As a result, the FE services are converged into the GE services. After the PEG16 receives the packets, the PEG8/PEG16 identifies the ports to which the services correspond according to the VLAN tags and strips the VLAN tags.

Downstream Direction

The services in the downstream direction are added with VLAN tags on the PEG8/PEG16 according to the destination ports. Then, the services are accessed by the GE port on the backplane side. The VLAN tags indicate the destination ports of the service packets. The service packets are sent to the destination ports after the VLAN tags are stripped.

Access and Converging Module

The access and converging module performs the following functions:

Transmits/Receives 8xFE electrical signals.
Converges 8xFE services into 1xGE services on the backplane side.
Extracts the IEEE 1588v2 clock information.

Control and Driving Module

The control and driving module performs the following functions:

Detects the system status through the management control bus.
- Checks whether the board is properly inserted.
- Detects the voltage of the PETF8.
Realizes the hot-swappable function of the PETF8.

Voltage Detecting Module

The voltage detecting module monitors the voltage.

Clock Module

The clock module performs the following functions:

Provides the working clock signal for each module of the PETF8.
Supports the synchronous Ethernet clock.
Supports the IEEE 1588v2 clock.

Power Module

The power module converts the accessed DC voltage into the DC voltages that the modules of the PETF8 require.

Front Panel

The front panel of the PETF8 has indicators, interfaces, and a bar code.

Diagram of the Front Panel

Figure 1 shows the appearance of the front panel of the PETF8.

Figure 1 Front panel of the PETF8

Indicators

Board hardware status indicator (STAT) - two colors (red and green)
Service activation status indicator (ACT) - one color (green)
Service alarm indicator (SRV) - two colors (red and green)
Connection status indicator (LINK) - one color (green and located on the RJ45 connector)
Data receiving and transmission indicator (ACT) - one color (orange and located on the RJ45 connector)

For the meanings of the status of the indicators, see Alarm Indicators on the Boards.

Interfaces

The front panel of the PETF8 has eight FE electrical interfaces. Table 1 describes the types and usage of the electrical interfaces of the PETF8.

**Table 1** Electrical interfaces of the PETF8
Interface	Type of Interface	Usage
FE1-FE8	RJ-45	Transmits and receives FE signals.

Jumpers and DIP Switches

The PETF8 does not have any jumpers or DIP switches that are used for board settings.

Valid Slots

The PETF8 must be installed in a valid slot on the subrack. Otherwise, the PETF8 fails to work normally.

The PETF8 can be installed in slots 19-26, and 29-36 in the subrack.

The PETF8 works as the interface board for the PEG8 and PEG16. For the slots valid for the PEG8 and PEG16 and the corresponding slots for the PETF8, refer to Table 1 and Table 1.

Technical Specifications of the PETF8

The technical specifications of the PETF8 include the parameters specified for electrical interfaces, mechanical specifications, and power consumption.

Parameters Specified for Interfaces

Table 1 lists the parameters specified for the electrical interfaces of the PETF8.

**Table 1** Specifications of the ports
Port type	Description
FE electrical interfaces	FE electrical interfaces (RJ-45/Packet)

Mechanical Specifications

The mechanical specifications of the PETF8 are as follows:

Dimensions (mm): 22.0 (W) x 125.2 (D) x 261.4 (H)
Weight (kg): 0.4

Power Consumption

The maximum power consumption of the PETF8 at room temperature (25°C) is 6 W.

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