Problem Description

Due to the expansion of the N3EGS4 single board, the power consumption exceeds the original maximum power consumption of 320w, and it is necessary to expand the power consumption, but in the document "NG-SDH Product Large Power Consumption Characteristics Topic Guide v110-Power Consumption, Subrack Expansion Guide", there is only one sentence as follows:

Product

Backplane Version

Default Power Consumption

Expandable Power Consumption

Power Consumption Expansion Explanation

osn1500b

ver.a/b/c

320w

480w

Software limit power consumption threshold 320w, replace with r1piu.d or r1piub, network management support power consumption expansion to 480w

Alarm messages

None

Processing

1, first of all, in the V1R8 product documentation, although the hardware description does not write r1piub single board, but with the R & D to confirm that the r1piub single board can be used in the old version of the ordinary sub-frame and enhanced sub-frame, and the software version has nothing to do.
2、If OSN1500B devices are installed in normal power consumption cabinets, then the hardware only needs to replace r1piu with r1piub, and the power cord doesn't need to be replaced (because the original power cord can support a current of 480w).
3、If OSN1500B devices are installed in large power consumption cabinets, then the hardware not only needs to be replaced with r1piub, but also need to replace the power cable (code: 04150099, one end of the double ot connects to pdu, one end of the 3v3 port connects to piu)
4. After the hardware is completed, there is still one more operation needed:
For V1R8 and later versions, you need to issue the command :cfg-set-nepowerth: //set command: 0xff00 --- normal power consumption mode; 0xff01 --- Large power consumption mode. And v2r11 and later versions support setting the power consumption threshold on the network management.
For versions before v1R8, there is no switch added, so there is no need to issue a command, and the maximum power consumption directly changes to 480W.

Root Cause

None

Recommendation and Summary

The power supply process of the whole equipment is as follows:
Customer power supply header cabinet - "Power supply air switch - "PDU of the cabinet - "Power cable - "PIU - "Motherboard
For power consumption expansion, the main thing is to see which link is the bottleneck that affects the power consumption enhancement, and replace the bottleneck. The bottleneck of OSN 1500B equipment is on the PIU single board, so the hardware is mainly to replace the PIU single board, which is different from the power consumption expansion of OSN 3500/7500.
For power expansion of other equipment, please refer to the "NG-SDH Product Large Power Characteristics Topic Guide v110 - Power Consumption, Subrack Expansion Guide".