Receives/Transmits and processes 2xGE 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 pluggable 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. The board supports pluggable SFP electrical ports. 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 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 electrical port: auto-negotiation, 1000M full-duplex, 100M full-duplex, and 10M full-duplex
• GE optical port: auto-negotiation and 1000M full-duplex
• FE electrical port: auto-negotiation, 100M full-duplex, 100M half-duplex, 10M full-duplex, and 10M half-duplex (This working mode is supported only when the EMS2 board works with the ETF8 board.)
• FE optical port: 100M full-duplex (This working mode is supported only when the EMS2 board works with the 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 MPLS tags.
• Supports a maximum of 4096 links.

• Supports the blacklist that can contain 2K records and also the static MAC address table that can contain 2K records. The sum of the number of records in the blacklist and the number of addresses in the static MAC address table must not exceed 2K. 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 16K. 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 16. The maximum number of logical ports for each VB is 66.
• 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 16. The maximum number of logical ports for each VB is 66.
• Supports the configuration of up to 4096 VLAN services.
• Supports the EVPLAN services that are based on the IEEE 802.1q virtual bridge and IEEE 802.1ad virtual bridge.

• Supports the setting of the frame length to a value ranging from 1518 bytes to 9600 bytes.
• Supports a jumbo frame with a maximum length of 9600 bytes.

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

16xVC-4, 48xVC-3 or 252xVC-12 + 36xVC-3

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

• Supports CC, LB tests, and LT 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, PORT+SVLAN, and PORT+VLAN+PRI.