IMM Temperature

[yenny]

Hi all. I need to analyze the temperature of IMM on my 7750 SR and I've found that the card temperature differs with that of the daughter card. I can't undestand which is the valid data for the IMM card.

B:router# show card 1 detail | match "Temp|imm" expression
1 imm12-10gb-sf+ up up
Temperature : 49C
Temperature threshold : 75C

B:router# show mda 1/1 detail | match "Temp|imm" expression
1 1 imm12-10gb-xp-sf+ up up
Temperature : 56C
Temperature threshold : 75C

B:router# show card 8 detail | match "Temp|imm" expression
8 imm-2pac-fp3 up up
Temperature : 61C
Temperature threshold : 75C

B:router# show mda 8/1 detail | match "Temp|p10" expression
8 1 p10-10g-sfp up up
Temperature : 47C
Temperature threshold : 75C

B:router# show mda 8/2 detail | match "Temp|p10" expression
8 2 p10-10g-sfp up up
Temperature : 40C
Temperature threshold : 75C

Does anyone have an idea?
Thanks.

[mivens]

They are both valid.
The two temperatures are from sensors on different parts of the card.
Some parts of the card are hotter than others.

[yenny]

Thank you very much mivens
I checked in many many routers with IMM and seems to have a similar behavior at all of them: For IMM cards with a 'single MDA', the MDA temp is greater than the IOM temp. Instead, for IMM cards with 'two MDA', IOM temp is greater than the MDA temp....
I'm interested in evaluating the performance of IMM because they've failed repeatedly and I estimate that they are working at a high temperature for a long time but they never exceeded the threshold of 75 C.
I appreciate your response (so kind).

(Sorry for my english)
Yenny.

[mivens]

For your examples, the cards with a single virtual MDA have FP2 network processors and the ones with two virtual MDAs are FP3 which will influence the temperature.

Here are a couple of examples opposite to yours of single MDA IMMs where the IOM temperature is greater than the MDA temperature. One is FP2 based the others FP3. The FP3 runs hotter and this is expected.

I think the temperatures from your original post look normal.

Code: Select all

A:7750# show mda 2

===============================================================================
MDA 2/1
===============================================================================
Slot  Mda   Provisioned Type                            Admin     Operational
                Equipped Type (if different)            State     State
-------------------------------------------------------------------------------
2     1     imm5-10gb-xp-xfp                            up        up
===============================================================================
A:7750#  show mda  2 detail  | match Temp | match threshold invert-match
    Temperature                   : 27C
 A:7750# show card 2 detail | match Temp | match threshold invert-match
    Temperature                   : 38C
    
 B:7750# show mda 7

===============================================================================
MDA 7/1
===============================================================================
Slot  Mda   Provisioned Type                            Admin     Operational
                Equipped Type (if different)            State     State
-------------------------------------------------------------------------------
7     1     p1-100g-cfp                                 up        up
===============================================================================
B:7750# show mda 7  detail | match Temp | match threshold invert-match
    Temperature                   : 46C
B:7750# show card 7 detail | match Temp | match threshold invert-match
    Temperature                   : 58C
    
*A:7750# show mda  5

===============================================================================
MDA 5/1
===============================================================================
Slot  Mda   Provisioned Type                            Admin     Operational
                Equipped Type (if different)            State     State
-------------------------------------------------------------------------------
5     1     m4-100g-cxp                                 up        up
===============================================================================
A:7750# show mda  5 detail | match Temp| match threshold invert-match
    Temperature                   : 28C
*A:7750# show card 5 detail | match Temp| match threshold invert-match
    Temperature                   : 52C    

[yenny]

Thank you very much.