04-06-2023 12:32 PM
Hi all, first time poster here looking for some direction on a config.
We upgraded a 9148S from 8.3(2a) to 9.3(2) - latest supported version and after the upgrade I noticed a few ports that before had the Trunk On.
fc1/1 is up
Port description is client_fc1
Hardware is Fibre Channel, SFP is short wave laser w/o OFC (SN)
Admin port mode is auto, trunk mode is off
interface fc1/1
switchport description client_fc1
switchport trunk mode off
port-license acquire
no shutdown
Would want to understand why these are moved offline during the upgrade and if I should move them back one by one to online?
Looking at the MDS Guide I see the following note: "You will see the switchport trunk mode off command added to F ports after upgrading from Cisco MDS NX-OS Release 8.1(1) to Cisco MDS NX-OS Release 8.2(1). " but not a whole lot explanation about it and what to do.
I appreciate the time taken with my question.
04-06-2023 10:14 PM
Looks like that is default set to off, you need to manually turn on (i guess) what is the outcome if you make then on manually.
02-08-2024 09:17 AM
It is an expected behavior. The trunk mode will be set to OFF during ISSU and during the "reload system non-disruptive" since it will follow the same ISSU path.
This change was implemented since the NX-OS 4.x to address the below two cases:
Also, there should not be any impact on the system/host with this change.
Trunk mode change will happen only when the following conditions are met:
Regarding the configuration guide, we had requested to make it generic since the change could happen if you upgrade from any release to any other higher release versions and if the above four conditions are met.
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