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What are the function differences between N1EAS2 and N3EAS2?

16 May

EAS2 is 2×10 GE Ethernet service card of Huawei MSTP/SDH equipment OSN3500 OSN7500, it is used to transmit/receive Ethernet services, manage bandwidths, and provides the Ethernet data with the following data features: Layer 2 switching, port isolation, flow classification, traffic control, VLAN management, and priority configuration.

 

 ESA2 application

 

EAS2 consists of the interface processing module, mapping module, interface converting module, logic and control module, clock module, and power module.

EAS2

 

EAS2 has functional versions N1 and N3, two versions have some different functions, N3EAS2 has newer started version than N1EAS2, N3 starts version of V200R012C01, while N1EAS2 starts from V100R008C01, below content will mainly introduce two versions difference from several aspects.

 

N1EAS2 and N3EAS2 function comparison table

Function and Feature

N1EAS2

N3EAS2

Pluggable optical module

XFP

SFP+

Also supports one-fiber bidirectional

EVPL (Ethernet virtual private line) service

PORT-shared EVPL services

supported

supported

VCTRUNK-shared EVPL services

supported

supported

The services are isolated by VLAN tags.

The services are isolated by MPLS tags (supported on N3EAS2)

The services are isolated by QinQ tags.

MAX links supported

2048

4096

Maximum uplink bandwidth

10 Gbit/s

20 Gbit/s

Maximum bound bandwidth

 

64xVC-4

or 192xVC-3

128xVC-4

Concatenation granularities

 

VC-4-Xv (X≤8), VC-3-Xv (X≤24), and VC-4-4c

 VC-4-Xv (X≤64) and VC-4-4c/16c/64c

NOTE:

For N3EAS2 boards, VCTRUNK1 and VCTRUNK18 support VC-4-16c/64c adjacent concatenation. Other VCTRUNKs only support VC-4-4c adjacent concatenation.

N3EAS2 supports adjacent concatenation only for bidirectional service

MAX number VCTRUNK supported

24

17 (10Gbit/s slot bandwidth)

34 (20Gbit/s slot bandwidth)

Multiple Spanning Tree Protocol (MSTP)

Not supported

supported

Ethernet ring protection switching (ERPS)

Not supported

supported

RMON (remote monitoring)

Ethernet performance monitoring at the port level

supported

supported

query of the rate of a port

supported

supported

Reports an alarm when the volume of traffic at a port exceeds the threshold

Not supported

supported

Slot installed in subrack

1–8; 11–18; 26–31

1–8; 11–18

1–6 and 13–18 (bandwidth 10Gbit/s)

7, 8, 11 and 12 (bandwidth 20Gbit/s)

Power Consumption

70 W

83 W

 

As for OSN3500 OSN7500 EoS service boards, FE GE service like EFS0 EGS4 is more common, which can meet most requirements of the operators, 10GE Ethernet board ESA2 is very rare, high price is, and hard to find on the market.

If your OSN3500 or OSN7500 is Hybrid version, you can consider PEX2 (2x10GE Packet Processing Boards) to transmit and receive 10GE service. When EAS2 applied, 10GE is encapsulated in SDH frame; if you use PEX2, it is another package plane, Ethernet service no longer into SDH frame, it running on another plane, use another fiber.

 

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Newer 10GE Aggregation-Huawei Switches VS. Cisco Switches
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