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Comparison of H901MPLA, H902MPLA and H903MPLA

MPLA board is the main control board of MA5800 X7/15/17. It is the core of the system control and service switching and aggregation. The MPLA board can also function as the management and control core of the integrated network management system (NMS). It communicates with service boards about the key management and control information through the master/slave serial port and inband GE/10GE channel. In this manner, the MPLA board configures, manages, and controls the device, and also implements the simple route protocol functions.

 

Huawei MPLA.jpg

 

There are three hardware versions of MPLA, H901MPLA, H902MPLA and H903MPLA, Below is a detailed comparison lists among the three versions, “Yes” indicates “supported” and “No” indicates “not supported”.

 

Board Specifications

H901MPLA

H902MPLA

H903MPLA

Bandwidth per slot (load balancing mode)

100 Gbit/s

100 Gbit/s

100 Gbit/s

Upstream or cascading port

4 x 10GE/GE ports

4 x 10GE/GE ports

4 x 10GE/GE ports

ALM port

No

No

No

BITS/TOD port

No

No

No

MAC address table size

262143

262143

262143

Access ONTs

17408

17408

17408

Multicast users

17408

17408

17408

Static programs

·4096 (earlier than V100R017C00)

·8192 (V100R017C00 and later versions)

8192

8192

Online programs

V100R016C00: 4000

V100R016C10:

· IPv4: 4000

· IPv6: 2000

V100R017C10 and later versions:

· IPv4: 8000

· IPv6: 2000

·IPv4: 8000

·IPv6: 2000

·IPv4: 8000

·IPv6: 2000

IPv4 routing table size

65536

65536

65536

IPv6 routing table size

16384

16384

16384

Service ports

139264

139264

139264

ND table size

16384

16384

16384

ARP table size

·66048 (earlier than V100R017C10)

· 98816 (V100R017C10)

·131072 (V100R018C00 and later   versions)

·66048 (V100R017C00)

·98816 (V100R017C10 version)

·131072 (V100R018C00 and later   versions)

131072

Ethernet synchronization

Yes

Yes

Yes

1588v2

Yes

Yes

Yes

1588ACR

Yes

Yes

Yes

D-CCAP

Yes

Yes

Yes

 

When configuring the boards of the MA5800 series OLT MA5800-X7/X15/X17, if both the active and standby control boards are configured, you need to periodically check whether the data of the active control board is synchronized to the standby control board to ensure reliable running of the system.

 

If necessary (for example, the active control board is faulty), you need to manually perform active/standby switchover to improve reliability of the system. An active/standby switchover involves only control plane switchover. The forwarding plane works in load sharing mode and therefore it continuously forwards services.

 

H903MPLA.jpg

 

When the software version of the active control board is inconsistent with the software version of the standby control board, the system capacity for backing up the service is affected. When the active control board is faulty, the active/standby switchover may fail, or the service cannot fully recover after the active/standby switchover.

 

Software version of MPLA are in below:

 

Part Number

External Model

Description

Start Version

03022XTN

H901MPLA

Main Processing   Board

V100R015C00

03024GDV

H902MPLA

Main Processing   Board

V100R017C00

03025KFE

H903MPLA

Main Processing   Board

V100R019C10

 

In addition, there are two kind daughter boards CKUA and CKUB of main control boards, the detail comparisons in below chart:

 

Daughter   Board

Corresponding   Control Board

Function

H901CKUA/H902CKUA

H901MPLA

H902MPLA

H903MPLA

Implements   clock processing and provides the stratum-3 clock for the system.

Implements   the 1588v2 clock processing function.

Implements   the 1588ACR clock processing function.

(Supported   by V100R016C10 and later).

H901CKUB/H902CKUB

H901MPLA

H902MPLA

H903MPLA

Implements   clock processing and provides the stratum-3 clock for the system.

Implements   the 1588v2 clock processing function.

 

If you have any pending issues about MPLA after reading this article, please email us at [email protected]

 

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