SL91EM6T,EM6T,Huawei OptiX RTN 980L IDU Boards

Huawei RTN 980L Board SL91EM6T Overview

The EM6T/EM6F is an FE/GE interface board, which provides four FE electrical ports and two GE ports. The difference between the EM6T and the EM6F is as follows: The GE ports on the EM6T are always electrical ports, whereas the GE ports on the EM6F function as two FE/GE optical or GE electrical ports through SFP modules. The GE electrical ports are compatible with FE electrical ports.

The functional version of the EM6T/EM6F is SL91.

The EM6F/EM6T receives/transmits Ethernet services or carries MPLS tunnels. The selection of the board depends on desired port types.

The EM6T/EM6F receives/transmits, processes, and converges four channels of FE signals and two channels of GE signals. The EM6F can also receive/transmit two channels of FE optical signals using FE SFP optical modules installed at the GE ports.

There are indicators, FE service ports, and GE service ports on the front panel of the EM6T/EM6F.

The EM6T/EM6F can be inserted in Slots 1 to 14, which have consistent logical slot numbers on the NMS.

The FE/GE SFP ports on the EM6F/EM6T support multiple types of SFP modules.

This section describes the technical specifications of the EM6T/EM6F, including mechanical specifications, specifications of GE ports and FE ports, and power consumption.

Functions and Features

Function and Feature		Description
Function and Feature		EM6T	EM6F
Basic functions		Receives/Transmits FE/GE service signals, and works with the packet switching unit to process the Ethernet service signals.
Port specifications	FE electrical port	Provides four 10/100BASE-T(X) ports.	Provides four 10/100BASE-T(X) ports.
Port specifications	GE port	Provides two unpluggable 10/100/1000BASE-T(X) ports.	Provides two ports that support the following SFP modules: Dual-fiber bidirectional FE/GE optical module Single-fiber bidirectional FE/GE module 10/100/1000BASE-T(X) GE electrical module
Backplane bus bandwidth		1 Gbit/s	1 Gbit/s
Forwarding mode		Centralized mode Distributed mode NOTE: The centralized and distributed modes are available only for Native E-Line services. In the centralized forwarding mode, intra-board Native E-Line services are forwarded also by the packet switching unit of the system control board. That is, double backplane bandwidth resources are consumed in the centralized mode compared to those in the distributed mode. In the distributed mode, intra-board Native E-Line services are directly forwarded by the switching unit on the board. Ethernet services of other types must be forwarded by system control boards' packet switching units. That is, only the centralized mode is available for Ethernet services of other types.
Port attributes	Working mode	FE electrical ports on the EM6T/EM6F support 10M/100M full-duplex, 10M/100M half-duplex, and auto-negotiation. GE electrical ports on the EM6T/EM6F support 10M/100M/1000M full-duplex, 10M/100M half-duplex, and auto-negotiation. FE optical ports on the EM6F support 100M full-duplex. GE optical ports support 1000M full-duplex and auto-negotiation.
	TAG attribute	Supports three TAG attributes: Tag Aware, Access, and Hybrid. Supports setting and query of the TAG attribute of an Ethernet port.
	Jumbo frame	Supports a maximum frame length of 9600 bytes.
	Traffic control	Supports port-based traffic control in compliance with IEEE 802.3x.
Services	Native ETH service	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
Services	ETH PWE3 service	E-Line services carried by PWs E-Aggr services carried by PWs E-LAN services carried by PWs, that is, VPLS services
LAG	Inter-board LAG	Supported
LAG	Intra-board LAG	Supported
ERPS		Supported and in compliance with ITU-T G.8032 v1
Spanning tree protocol		Supports MSTP that runs only CIST instances, providing the same functions as RSTP.
IGMP Snooping		Supported
LPT		Supported
Port mirroring		Supported
LLDP		Supported
QoS	DiffServ	Supports simple traffic classification by PHB that is specified based on QoS information carried in packets (including the C-VLAN priority, S-VLAN priority, DSCP value, and MPLS EXP value).
	Complex traffic classification	Supports traffic classification at Ethernet ports by DSCP in packets, SMAC, DMAC, C-VLAN ID, S-VLAN ID, C-VLAN priority, S-VLAN priority, C-VLAN ID+C-VLAN priority, or S-VLAN ID+S-VLAN priority.
	CAR	Supports CAR for service flows at ports.
	Queue scheduling policy	SP WRR SP+WRR
	Congestion avoidance	Supports packet dropping in tail drop mode or WRED mode.
	Traffic shaping	Supports shaping for a specific port, priority queue, or service flow, and allows the PIR and CIR to be specified in steps of 64 kbit/s.
ETH OAM	Ethernet service OAM	Supports ETH OAM functions that comply with IEEE 802.1ag. Supports packet loss, delay, and delay variation detection functions that comply with ITU-T Y.1731.
ETH OAM	Ethernet port OAM	Supports ETH OAM functions that comply with IEEE 802.3ah.
RMON		Supported
Clock	Physical layer synchronization	Synchronous Ethernet	Synchronous Ethernet (not supported by SFP electrical modules)
	Physical-layer clock protection	Protection based on clock source priorities Protection based on the SSM protocol Protection based on the extended SSM protocol
	Packet time synchronization	Not supported by the EM6T.	Not supported by the EM6F.
	Packet frequency synchronization	Not supported by the EM6T.	Not supported by the EM6F.
DCN	Inband DCN	Provides one inband DCN channel over each FE/GE port.
O&M	Loopback	Supports PHY-layer inloops at Ethernet ports. Supports MAC-layer inloops at Ethernet ports.
	Warm reset and cold reset	Supported
	Query of board manufacturing information	Supported
	Query of board power consumption	Supported
	Board voltage monitoring	Supported
	Board temperature monitoring	Supported
	Query of SFP module information	Not supported	Supported

Hunan Moka Information Technology Co., Ltd.

A professional import and export trade company specializing in the agency sales and services of the full range of Cisco products in the United States. Our product range includes Cisco switches, Cisco routers, Cisco firewalls, Cisco wireless APs, Cisco conference terminals, Cisco optical modules, Cisco fiber optic jumpers, Cisco industrial switches, and Cisco software licenses. As an authorized distributor of Cisco in China, we directly purchase hardware and software from Cisco China in the name of projects. As a result, you can obtain the best discounts from Cisco China, typically ranging from 60% to over 90%. Due to Cisco's global sales policy, if you order Cisco licenses, with your consent and permission, we will assist you in installing and activating Cisco licenses within China. Alternatively, you can activate them in your own country, and we will transfer the licenses to you. All you need is a Cisco Smart Account. When the Cisco licenses expire, you can choose to renew them yourself or contact us.

As an authorized distributor of Cisco in China, we directly purchase hardware and software from Cisco China in the name of projects.

Huawei OptiX RTN 980L IDU Boards SL91EM6T

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