3850 MATM dropped learn cache batch messages as queue limit has reached

[tianwen.zhao]

Hi everyone,

I saw some strange logs today, but I didn't know what they mean

Feb 25 10:51:32.493 CNT: %PLATFORM_MATM-4-QUEUE_OVERLIMIT: MATM dropped learn cache batch messages as queue limit has reached.
Feb 25 10:52:32.545 CNT: %PLATFORM_MATM-4-QUEUE_OVERLIMIT: MATM dropped learn cache batch messages as queue limit has reached.
Feb 25 10:53:32.545 CNT: %PLATFORM_MATM-4-QUEUE_OVERLIMIT: MATM dropped learn cache batch messages as queue limit has reached.
Feb 25 11:42:57.737 CNT: %PLATFORM_MATM-4-QUEUE_OVERLIMIT: MATM dropped learn cache batch messages as queue limit has reached.
Feb 25 11:43:57.738 CNT: %PLATFORM_MATM-4-QUEUE_OVERLIMIT: MATM dropped learn cache batch messages as queue limit has reached.

How can I fix this problem? And what will these impact to the switches?

#show version

Switch Ports Model SW Version SW Image Mode
------ ----- ----- ---------- ---------- ----
* 1 16 WS-C3850-12XS 16.6.5 CAT3K_CAA-UNIVERSALK9 BUNDLE
2 32 WS-C3850-24S 16.6.5 CAT3K_CAA-UNIVERSALK9 BUNDLE
3 56 WS-C3850-48T 16.6.5 CAT3K_CAA-UNIVERSALK9 BUNDLE

Thank you for any answers

[Georg Pauwen]

Hello,

tough one, as I cannot find ANY reference to this particular error message. Can you see any input/output queue drops on any of your interfaces ?

[tianwen.zhao]

Thank you for your reply
Yes ,I can see mass drops on the interfaces

GigabitEthernet2/0/20 is up, line protocol is up (connected)
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 13372012
0 unknown protocol drops
GigabitEthernet2/0/21 is up, line protocol is up (connected)
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 1696870
0 unknown protocol drops
GigabitEthernet2/0/22 is up, line protocol is up (connected)
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 132414
0 unknown protocol drops
GigabitEthernet2/0/23 is up, line protocol is up (connected)
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 1251406
0 unknown protocol drops
GigabitEthernet2/0/24 is up, line protocol is up (connected)
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 1029593
0 unknown protocol drops

How can I fix this ???

[JR21]

I was consoled into a switch and saw this message. The escape sequence did not work, and console back to the device just popped this message again. I couldn't do anything.

Please let know if you find anything on this.

Thanks.

[angelocandler]

I am seeing the same issue but did not see anyone find a resolution. Does anyone have a fix?

[MHM Cisco World]

add new post it is better

MHM