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FAQ-What Is the Correspondence Between the Boards and the MIB Information About Board Memory Usage Read by the Third-Party NMS Installed on NE5000E V200R003

Publication Date:  2012-07-27 Views:  135 Downloads:  0
Issue Description
Q:
At a site, a proprietary MIB is provided for the third-party NMS. Information read by the NMS is the MIB followed by a digit about the board number (see the appendix). When the display health command is executed, it is found that information displayed is different from the corresponding information displayed on the NMS. Why?
<661-NE5000E-01>disp health
Slot          CPU Usage     Memory Usage (Used/Total) 
-----------------------------------------------------
18 MPU(Master)   9%           25%  231MB/889MB
 1 LPU           7%           42%  165MB/390MB
 2 LPU           7%           42%  165MB/390MB
 3 LPU           7%           42%  165MB/390MB
 4 LPU           6%           42%  165MB/390MB
 5 LPU           4%           39%  156MB/390MB
 7 LPU           9%           46%  180MB/390MB
10 LPU           5%           46%  180MB/390MB
11 LPU           5%           46%  180MB/390MB
17 MPU(Slave)    3%        22%  198MB/889MB
Alarm Information
Null
Handling Process
A:
The correspondence between slot numbers obtained through MIB information calculation with the preceding method and the memory usage is as follows:
MIB Slot Memory Usage
512  -- 1   -- 42
1024 -- 2   -- 42
1536 -- 3   -- 42
2048 -- 4   -- 42
2560 -- 5   -- 39
3584 -- 7   -- 46
5120 -- 10  -- 46
5632 -- 11  -- 46
8704 -- 17  -- 22
9216 -- 18  -- 26
9728 -- 19  -- 85
10240-- 20  -- 85
10752-- 21  -- 85
11264-- 22  -- 85
11776-- 23  -- 0
12288-- 24  -- 0
13312-- 26  -- 0
13824-- 27  -- 0
14336-- 28  -- 0
14848-- 29  -- 0
On the NE5000E, only LPUs and MPUs have memories. Therefore, in the preceding table, the memory usage values before slot 18 are of practical significance. From the preceding list, the memory usage reflected in the MIB is the same as the memory usage displayed using the display health command. 
 
Root Cause
The display health command displays the usage of MPU and LPU memories. MIB information reflects the memory usage of all boards in numbered slots, including LPUs, MPUs, SFUs, clock boards, power supply boards, and LCDs.
As shown in the appendix, MIB information displayed on the NMS is in the following format:
1.3.6.1.4.2011.5.25.31.1.1.1.1.7.512=xx
1.3.6.1.4.2011.5.25.31.1.1.1.1.7.1024=xx
The value following "=" indicates the memory usage expressed in percent. 1.3.6.1.4.2011.5.25.31.1.1.1.1.7 is the memory MIB of NE5000E V200R003. The value 512 or 1024 following the MIB indicates the board. The slot number can be calculated as follows:
Extract the digits before "=" displayed as the MIB. Convert the digits to binary characters. Remove the last nine 0s. Then you can get a new binary value. Convert this value to a decimal value, which is the slot number in the first column of information displayed using the display device command. 
 
Suggestions
When using the third-party NMS to manage the NE5000E, communicate with the NMS vendor on how to convert information in the MIB to slot numbers. 

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