Receives/Transmits and processes 4xGE and 16xFE services

• Supports 1000BASE-SX/LX/ZX/VX Ethernet optical ports. The optical ports support the auto-negotiation function in compliance with IEEE 802.3z. The optical ports use SFP optical modules. When the multi-mode optical fiber is used, the maximum transmission distance is 550 m. When the single-mode optical fiber is used, the maximum transmission distance is 10 km. The optical modules that can meet different requirements for the transmission distance such as 40 km and 80 km can also be used.
• Supports 1000BASE-T Ethernet electrical ports. The electrical ports support the auto-negotiation function. The negotiated rate can be 10 Mbit/s, 100 Mbit/s, or. 1000 Mbit/s. EMS4 boards support SFP electrical ports and hot swapping. The maximum transmission distance is 100 m.
• Supports 10BASE-T/100BASE-TX signals when working with an ETF8 board and supports 100BASE-FX signals when working with an EFF8 board. The electrical/optical ports comply with IEEE 802.3u.

• Provides 16 electrical ports to receive/transmit FE signals when working with an ETF8 board.
• Provides 16 optical ports to receive/transmit FE signals when working with an EFF8 board.
• Provides 8 electrical ports to receive/transmit FE signals when working with an ETF8 board, and provides 8 optical ports to receive/transmit FE signals when working with an EFF8 board.

• GE optical port: auto-negotiation, 1000M full-duplex
• GE electrical port: auto-negotiation, 1000M full-duplex
• An EMS4 board supports the auto-negotiation, 100M full-duplex, 100M half-duplex, 10M full-duplex, and 10M half-duplex working mode when working with an ETF8 board.
• An EMS4 board supports only the 100M full-duplex working mode when working with an EFF8 board.

Supports PORT-based transparent transmission.

• Supports PORT-shared EVPL services.
• Supports VCTRUNK-shared EVPL services.
  • The services are isolated by VLAN tags.
  • The services are isolated by QinQ tags.
• Supports a maximum of 8000 links.

• Supports the blacklist that can contain 512 records and also the static MAC address table that can contain 512 records. The blacklist function supports verification of destination MAC addresses only.
• Supports the self-learning of the source MAC address. The capacity of the MAC address table is 128K. The aging time of the MAC address can be set and queried.
• Supports the configuration of static MAC routes.
• Supports the query of dynamic MAC addresses.
• The maximum number of supported VBs is 2. The maximum number of logical ports for each VB is 84, recommends not exceed 40.
• Supports the EPLAN services that are based on the IEEE 802.1d MAC bridge.

• Supports data isolation based on VB+VLAN.
• The maximum number of supported VBs is 2. The maximum number of logical ports for each VB is 84, recommends not exceed 40.
• Supports the setting of a maximum of 4000 VLAN services.
• Supports the EVPLAN services that are based on the IEEE 802.1q virtual bridge and IEEE 802.1ad provider bridge.

• Supports the setting of the frame length to a value ranging from 1518 bytes to 9216 bytes.
• Supports a jumbo frame with a maximum length of 9216 bytes.

Supports a total number of 4094 VLANs, which comply with IEEE 802.1q/p.

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.

Supports the broadcast packet suppression function and RSTP, which comply with IEEE 802.1w.

• Supports CC, LB tests in compliance with IEEE 802.1ag, and OAM ping in compliance with proprietary protocol.
• Supports OAM auto-discovery, remote loopbacks, fault detection, and link performance detection in compliance with IEEE 802.3ah, and selfloop detection in compliance with proprietary protocol.

• Supports the CAR. The granularity is 64 kbit/s.
• Supports the flow classification based on PORT, PORT+VLAN, or PORT+SVLAN.