Memory Leak on 3850

[fdharmawan]

Hi Guys,

I recently read a field notice from Cisco regarding memory leak on 3850. Below are the details:

• FN -> https://www.cisco.com/c/en/us/support/docs/field-notices/703/fn70359.html
• Bug Page -> https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvh89372

I have several 3850 with 16.3.5b running in my environment. I took sample on 3 of my switches and so far I did not find the symptom explained.

Should I upgrade my switches to a newer version? The severity on the page itself is 'only' moderate.

Thank you.

[MUHAMMAD TAYYAB MUNIR · Accepted solution]

Hi Fdharmawan,

WS-C3850-48P, I would recommend upgrading to IOS-XE Version 16.3.6 as shown below. Here’s the Release Note for the IOS-XE Procedure to upgrade from IOS-XE 3.xE to IOS-XE Denali 16.3.x in Install Mode and have mentioned all known bugs related  memory leak.

(https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3850/software/release/16-3/release_notes/ol-16-3-3850.html)

Hope response helpful to you!

BR

Tayyab

[fdharmawan]

Hi Tayyab,

I guess I will upgrade to 16.3.7 since it is the current recommended IOS.

[MUHAMMAD TAYYAB MUNIR]

Hi @fdharmawan

just for your information to read before you go for the upgrade we faced recently production enviorment.

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCui54490      (for this bug upgrade to 3.7.4E)

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCva22528/?rfs=iqvred    (for this bug, you can 3.6.8)

BR

Tayyab

[Leo Laohoo · Accepted solution]

I know I would.
The firmware you're using is a "re-build".

[fdharmawan]

Hi Leo,

Thank you. Will upgrade to 16.3.7.

Cheers.

[MUHAMMAD TAYYAB MUNIR]

Hi,

Glad to help you.

BR

Tayyab