| Basic functions | Processes 8xFE services. |
| Port types | - An EFS0 board supports 10BASE-T/100BASE-TX signals when working
with an ETF8 board. The electrical ports comply with IEEE 802.3u.
- An EFS0 board supports 100BASE-FX/LX/VX/ZX signals when working
with an EFF8 board. The optical ports comply with IEEE 802.3u.
- An N5EFS0 board supports 10BASE-T/100BASE-TX signals when working
with an ETF8A board. The electrical ports comply with IEEE 802.3u.
- An N5EFS0 board supports 100BASE-FX/LX signals when working with an
EFF8A board. The optical ports comply with IEEE 802.3u.
|
| Functions when being used with an interface board | - An EFS0 board provides eight electrical ports to receive/transmit
FE signals when working with an ETF8 board.
- An EFS0 board provides eight optical ports to receive/transmit FE
signals when working with an EFF8 board.
- An EFS0 board provides the TPS protection for FE signals
received/transmitted through eight electrical ports when working
with an ETS8 board and a TSB8 board.
- An N5EFS0 board provides eight electrical ports to receive/transmit
FE signals when working with an ETF8A board.
- An N5EFS0 board provides eight optical ports to receive/transmit FE
signals when working with an EFF8A board.
|
| Port characteristics | Working modes | - FE electrical port: auto-negotiation, 100M full-duplex, 100M
half-duplex, 10M full-duplex, and 10M half-duplex
- FE optical port: 100M full-duplex
- An N5EFS0 board supports only the auto-negotiation and 100M
full-duplex working mode when working with an EFF8A board.
|
| Traffic control mode at ports | Auto-negotiation mode | Supported (Not supported by FE optical ports) |
| Non-autonegotiation mode | Supported (not supported if an EFS0 board works with an EFF8 board) |
| Query/Setting of port status | Supported |
| Query of port types | Supported |
| Setting of optical power thresholds | Not supported |
| Pluggable optical module | Not supported |
| Service categories | EPL service | Supports PORT-based transparent transmission. |
| EVPL service | - 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.
|
| EPLAN service | N4EFS0/N5EFS0 boards support the EPLAN services that are based on
the IEEE 802.1d MAC bridge. - 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 of N5EFS0 boards 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.
- N4EFS0/N5EFS0 boards support the query of dynamic MAC addresses.
- The maximum number of supported VBs is 16. The maximum number of
logical ports for each VB is 30.
- Queries the number of actually learned MAC addresses based on
VB+VLAN or VB+LP.
|
| EVPLAN services | - 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 30.
- Supports the setting of a maximum of 4096 VLAN services.
- Supports the EVPLAN services that are based on the IEEE 802.1q
virtual bridge.
|
| Service specifications | Formats of Ethernet data frames | IEEE 802.3 | Supported |
| Ethernet II | Supported |
| IEEE 802.1 q/p | Supported |
| Frame length range | - 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.
|
| Concatenation granularities | Supports VC-12, VC-3, VC-12-Xv (X ≤ 63), and VC-3-Xv (X ≤ 12)
granularities. |
| Encapsulation formats | HDLC | Not supported |
| LAPS | Not supported |
| GFP-F | Supported |
| MPLS technology | Supports the MPLS. |
| VLAN technology | Supports a total number of 4094 VLANs, which comply with IEEE
802.1q/p. |
| Maximum uplink bandwidth | - The maximum uplink bandwidth is 1.25 Gbit/s.
- An EFS0 board can adapt to the bandwidth of its slot.
|
| Maximum bound bandwidth | 24xVC-3, or 126xVC-12 + 18xVC-3 |
| VCTRUNK specifications | The number of supported VCTRUNKs is 24. Configuration principles are as follows: - Each VC channel can be bound only to one VCTRUNK.
- VCTRUNK1 to VCTRUNK12 must be bound when a board is housed in a
slot providing 622M bit/s bandwidth.
- VCTRUNK 1-VCTRUNK 12 can be bound only with lower order paths in
VC-4s numbered 1-4. VCTRUNK 13-VCTRUNK 24 can be bound only with
lower order paths in VC-4s numbered 5-8.
- VC-4s numbered 4 and 8 support the binding of VC-3 and VC-12 paths.
The other VC-4s support the binding of VC-3 paths only.
- A VCTRUNK can be bound with a maximum of 12 VC-3s or 63 VC-12s.
- A VCTRUNK can be bound with the VC-12 path or VC-3 path at one
time. A VCTRUNK should not be bound with VC-12 and VC-3 paths at
the same time.
|
| Protection schemes | TPS | Supported by N2EFS0/N4EFS0/N5EFS0 boards |
| BPS | Not supported |
| PPS | Not supported |
| DLAG | Not supported |
| LAG | N2EFS0/N4EFS0/N5EFS0 boards support manual link aggregation and the
load sharing mode that comply with IEEE 802.3ad and IEEE 802.1AX. |
| LCAS | Not supported by the N2EFS0. Dynamically increases or decreases the bandwidth and protects the
bandwidth in compliance with ITU-T G.7042. This protection scheme
is supported by the N4EFS0/N5EFS0. |
| LPT | N2EFS0 boards support P2P LPT. N4EFS0/N5EFS0 boards support P2P LPT
and P2MP LPT. LPT functions comply with proprietary protocol. |
| STP/RSTP | Supports the broadcast packet suppression function and RSTP, which
comply with IEEE 802.1w. |
| MSTP | Not supported |
| Clock synchronization | Synchronous Ethernet | Not supported |
| IEEE 1588v2 | Not supported |
| Maintenance features | ETH OAM | - N4EFS0 and N5EFS0 boards support CC, LB tests, and LT tests in
compliance with IEEE 802.1ag, and OAM ping in compliance with
proprietary protocol.
- N4EFS0 and N5EFS0 boards support 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.
|
| Test Frame | - N2EFS0 boards support test frames in Ethernet bearer mode.
- N4EFS0/N5EFS0 boards support test frames in Ethernet/GFP bearer
mode.
|
| Response to ping | Not supported |
| Port Mirroring | N2EFS0/N4EFS0 boards do not support port mirroring. N5EFS0 boards
support ingress mirroring. |
| Loopback capability | PHY layer at Ethernet ports | Supports inloops. |
| MAC layer at Ethernet ports | Supports inloops. |
| VC-4 level | Not supported |
| VC-3 level | N2EFS0/N4EFS0 boards support inloops and outloops. N5EFS0 boards do
not support inloops or outloops. |
| VC-12 level | Not supported |
| RMON | Supports Ethernet performance monitoring at the port level. |
| Warm resets | N2EFS0/N4EFS0/N5EFS0 boards support warm resets. If a warm reset is
performed on an N2EFS0 board, traffic on the board is interrupted,
whereas if a warm reset is performed on an N4EFS0/N5EFS0 board,
traffic on the board is not interrupted. If an N4EFS0/N5EFS0 board
substitutes for an N2EFS0 board, traffic on the N4EFS0/N5EFS0 board
is not interrupted. |
| Cold resets | Supported |
| Alarms and performance events | Reports various alarms and performance events, which facilitates
the management and maintenance of the equipment. |
| QoS | - Supports the CAR. The granularity is 64 kbit/s.
- N2EFS0, N4EFS0, and N5EFS0 boards support the flow classification
based on PORT, PORT+VLAN, or PORT+VLAN+VLAN PRI.
- N5EFS0 boards support the traffic classification based on
PORT+SVLAN.
|
| IGMP Snooping | Protocol enabling | Supported |
| Port aging time | Supported |
| Fast leave | Not supported by N2EFS0/N4EFS0 boards Supported by N5EFS0 boards |
| Discarding of unknown broadcast packets | Not supported by N2EFS0/N4EFS0 boards Supported by N5EFS0 boards |
| Static broadcast entry | Not supported |
| Hub/Spoke | Not supported by N2EFS0 boards Supported by N4EFS0/N5EFS0 boards |
| Traffic control | Supports the port-based traffic control function that complies with
IEEE 802.3x.NOTE:Only EPL services support port-based traffic control. |
| Traffic monitoring | N5EFS0 boards support port-based and VCTRUNK-based traffic
monitoring. |
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