| Basic functions | Processing 8-channel FE services |
| Interface type | Use with ETF8 to support 10Base-T/100Base-TX and meet IEEE 802.3u standard. Support 100Base-FX/LX/VX/ZX with EFF8 to meet IEEE 802.3u standard. N5EFS0 works with ETF8A to support 100Base-TX and meets the IEEE 802.3u standard. N5EFS0 works with EFF8A to support 100Base-FX/LX and meets the IEEE 802.3u standard.
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| In conjunction with the outgoing board | Use with ETF8 to realize 8-way FE telecom signal access. Work with EFF8 to realize 8-channel FE optical signal access. Match with ETS8 and TSB8 to realize 8-channel FE electrical signal TPS protection. N5EFS0 can also cooperate with ETF8A to realize 8-channel FE electrical signal access. N5EFS0 can also cooperate with EFF8A to realize 8-channel FE optical signal access.
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| Interface Characteristics | Working Mode | FE electrical interface: supports self-negotiation, 100M full-duplex, 100M half-duplex, 10M full-duplex, 10M half-duplex. FE optical port: supports 100M full duplex. When N5EFS0 is used with ETF8A, only self-negotiation and 100M full duplex are supported.
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| Port Flow Control Methods | Self-negotiation | Supported (not supported on FE optical ports) |
| Non-self-negotiation | Support (non-self-negotiation flow control is not supported when used with EFF8 single board) |
| Port status query/configuration | Supported |
| Interface type query | Support |
| Optical power threshold setting | Not supported |
| Pluggable Optical Module | Not supported |
| Service Type | EPL | Supports PORT-based transparent transport. |
| EVPL | Supports EVPL service with shared PORT. Supports EVPL service with shared VCTRUNK. Supports up to 4096 LINK services.
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| EPLAN | N4EFS0/N5EFS0 supports EPLAN services based on IEEE 802.1d MAC bridge. Maximum support 2K blacklists and 2K static MAC addresses, shared 2K. blacklists on N5EFS0 boards only support destination MAC address checksums, not source MAC address checksums. Support source MAC address self-learning function, MAC address table size is 16K, support MAC address aging time setting and query. Supports static MAC routing configuration. N4EFS0/N5EFS0 supports dynamic MAC address query. The maximum number of VBs supported is 16, and the maximum number of logical ports per VB is 30. Supports querying the number of actual learned MAC addresses by VB+VLAN or VB+LP.
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| EVPLAN | Supports data isolation based on VB+VLAN method. The maximum number of VBs supported is 16, and the maximum number of logical ports per VB is 30. Supports the setting of up to 4096 VLAN services. Supports EVPLAN services based on IEEE 802.1q Virtual Bridge. N5EFS0 also supports EVPLAN services based on IEEE 802.1ad Provider Bridge.
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| Service Specifications | Ethernet Data Frame Format | IEEE 802.3 | Supported |
| Ethernet II | Supported |
| IEEE 802.1 q/p | Supported |
| Frame Length Range | Support 1518Byte～9600Byte message length setting, support Jumbo frames up to 9600Byte. |
| Mapping Method | VC-12, VC-3, VC-12-Xv (x≤63), VC-3-Xv (x≤12) |
| Encapsulation Format | HDLC | Not supported |
| LAPS | Not supported |
| GFP-F | Supported |
| MPLS Technology | Supported |
| VLAN Technology | Supports 4094 VLAN tags, VLAN technology meets IEEE 802.1q/p standard. |
| Maximum Uplink Bandwidth | The maximum uplink bandwidth of N1EFS0 is 622Mbit/s. The maximum uplink bandwidth of N2EFS0/N4EFS0/N5EFS0 is 1.25Gbit/s. Support slot bandwidth adaption.
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| Maximum Binding Bandwidth | N1EFS0: 12xVC-3 or 63xVC-12+9xVC-3 N2EFS0/N4EFS0/N5EFS0: 24xVC-3 or 126xVC-12+18xVC-3 |
| VCTRUNK Specifications |
Quantity: Configuration Features: After a VC channel of each level is used by one VCTRUNK binding, other VCTRUNKs can no longer be used. VCTRUNK1 to VCTRUNK12 are required to be bound when the bandwidth of N2EFS0/N4EFS0/N5EFS0 slots is 622M bit/s. VCTRUNK1 to VCTRUNK12 can only bind low-order services of 1 to 4 VC-4 channels, and VCTRUNK13 to VCTRUNK24 can only bind low-order services of 5 to 8 VC-4 channels. The two VC-4s, 4 and 8, can be bound to both VC-3 and VC-12 channels, while the other VC-4s can only be bound to VC-3 channels. Each VCTRUNK can bind up to 12 VC-3s or 63 VC-12s. The same VCTRUNK can only be bound to one level of channel, it cannot be bound to both VC-12 channels and VC-3 channels.
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| Protection Methods | TPS | N1EFS0 is not supported, N2EFS0/N4EFS0/N5EFS0 are supported. |
| BPS | Not supported |
| PPS | Not supported |
| DLAG | Not supported |
| LAG | N1EFS0 does not support link aggregation, N2EFS0/N4EFS0/N5EFS0 support manual link aggregation and load sharing. Meets IEEE 802.3ad and IEEE 802.1AX standards. |
| LCAS | N1EFS0/N2EFS0 are not supported. N4EFS0/N5EFS0 is supported to realize dynamic increase, dynamic decrease and protection function of bandwidth, which meets ITU-T G.7042 standard. |
| LPT | N1EFS0/N2EFS0 support point-to-point LPT, and N4EFS0/N5EFS0 support point-to-point LPT and point-to-multipoint LPT, meeting Huawei's internal protocol standards. |
| STP/RSTP | Supports the broadcast message suppression function and Rapid Spanning Tree Protocol (RSTP), meeting the IEEE 802.1w standard. |
| MSTP | does not support |
| Synchronization | Synchronous Ethernet | Not supported |
| 1588v2 | Not supported |
| Maintenance Features | ETH OAM | N1EFS0 and N2EFS0 are not supported. N4EFS0/N5EFS0 supports CC, LB, and LT to meet the IEEE 802.1ag standard; it supports OAM_Ping to meet Huawei's internal protocol standard. N4EFS0/N5EFS0 supports OAM auto-discovery, remote loopback, fault detection, and link performance monitoring, which meets the IEEE 802.3ah standard; it supports self-loop detection, which meets Huawei's internal protocol standard.
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| Test Frames | |
| Response Ping Function | Does not support |
| Port Mirroring | N1EFS0/N2EFS0/N4EFS0 do not support, N5EFS0 supports inbound port mirroring. |
| Loopback Capability | Ethernet port PHY layer | Supports inner loopback |
| Ethernet port MAC layer | Supports inner loopback |
| VC-4 level | Not supported |
| VC-3 level | N1EFS0/N2EFS0/N4EFS0 support inner loopback and outer loopback, N5EFS0 does not. |
| VC-12 level | Not supported |
| RMON | Port-level Ethernet performance monitoring is supported. |
| Soft Reset | N1EFS0/N2EFS0 support soft reset, and soft reset interrupts service.N4EFS0/N5EFS0 support soft reset, and soft reset does not affect service. When N4EFS0/N5EFS0 is compatible to replace N1EFS0/N2EFS0, soft reset is supported and soft reset does not affect the service. |
| Hard reset | Support |
| Alarm and Performance | Provides rich alarms and performance events for easy device management and maintenance. |
| QoS | Supports CAR with a granularity of 64kbit/s. N1EFS0 supports service classification based on PORT, PORT+VLAN, and PORT+VLAN PRI. N2EFS0, N4EFS0 and N5EFS0 support flow classification based on PORT, PORT+VLAN, PORT+VLAN+VLAN PRI. N5EFS0 also supports PORT+SVLAN-based flow classification.
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| IGMP Snooping | Protocol Enablement | Supports |
| Port Aging Time | Support for |
| Fast Leave | N1EFS0, N2EFS0 and N4EFS0 are not supported. N5EFS0 is supported. |
| Unknown multicast message discard | Not supported by N1EFS0, N2EFS0 and N4EFS0. N5EFS0 supports it. |
| Static multicast table entries | Not supported |
| Hub/Spoke | Not supported by N1EFS0, N2EFS0. N4EFS0 and N5EFS0 are supported. |
| Traffic Control | Port-based IEEE 802.3x flow control is supported. Description: Only EPL services support port-based flow control. |
| Traffic Monitoring | N5EFS0 supports port and VCTRUNK based traffic monitoring. |
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