The EMS6/SL91EMS6 is an FE/GE EoSDH processing board providing the switching function. It provides four FE electrical ports and two GE ports through SFP optical/electrical modules.
Version Description
The functional version of the EMS6 is SL91.
Application
The EMS6 transmits Ethernet services over TDM microwave networks or Native Ethernet services of Hybrid microwave networks through third-party SDH optical networks.
FE/GE Service Transmission over SDH/PDH Microwave
If the OptiX RTN 980 transmits Ethernet services over SDH/PDH microwave, the EMS6 receives/transmits, encapsulates, and maps Ethernet services that come from customer premises or Layer 2 networks.
Transparent Transmission over Third-Party SDH Optical Networks
If the OptiX RTN 980 converges Ethernet services over Hybrid microwave and the converged Ethernet services need to be transparently transmitted over third-party SDH optical networks, the EMS6 encapsulates and maps the converged and locally received Ethernet services.
Function and Feature |
Description |
|
Basic functions |
Receives/Transmits four channels of FE signals, two channels of GE signals, and one channel of GE packet plane signals, and performs EoSDH processing. |
|
Port specifications |
FE electrical port |
Provides four 10/100BASE-T(X) ports. |
GE port |
Provides two ports that support the following SFP modules:
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Port attributes |
Working mode |
|
TAG attribute |
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Jumbo frame |
Supports a maximum frame length of 9600 bytes. |
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Traffic control |
Supports port-based traffic control in compliance with IEEE 802.3x. |
|
Service type |
EPL |
Supports the EPL services based on ports. |
EVPL |
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EPLAN |
Supports EPLAN services based on IEEE 802.1d bridges. |
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EVPLAN |
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Encapsulation and mapping |
Encapsulation format |
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Maximum TDM service capacity supported by the backplane |
4xVC-4 |
|
VCTRUNK level |
VC-12/VC-12 VX/VC-3/VC-3 VX |
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Maximum number of VCTRUNKs supported by the board |
8 |
|
Maximum bandwidth supported by each VCTRUNK |
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LCAS |
Supported |
|
LAG |
Inter-board LAG |
Not supported |
Intra-board LAG |
Supported NOTE: Port 7 (bridging port) on the EMS6 does not support intra-board LAG. |
|
ERPS |
Supported and in compliance with ITU-T G.8032 v1 |
|
Spanning tree protocol |
Supports the STP and RSTP, which comply with IEEE 802.1w. |
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IGMP Snooping |
Supported |
|
LPTa |
Supported NOTE: Port 7 (bridging port) on the EMS6 does not support LPT. |
|
QoS |
Traffic classification |
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CoS |
Grooms packets in traffic flows to eight egress queues of different CoSs in the following modes:
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CAR |
Supports CAR for service flows. |
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Shaping |
Supports traffic shaping for a specific port or egress queue. |
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Queue scheduling policy |
|
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Ethernet OAM |
NOTE: Port 7 (bridging port) on the EMS6 does not support ETH-OAM functions that comply with IEEE 802.3ah. |
|
RMON |
Supported |
|
Port mirroring |
Supported |
|
Clock |
Clock source |
Synchronous Ethernet NOTE: Ports 7 and 8 (bridging ports) on the EMS6 do not support synchronous Ethernet. |
Clock protection |
|
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Check for MAC address flapping |
Supported |
|
O&M |
Loopback |
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Traffic monitoring |
Supported |
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Warm reset and cold reset |
Supported |
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Query of board manufacturing information |
Supported |
|
Query of board power consumption |
Supported |
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Board temperature monitoring |
Supported |