Cisco MDS: Interface "no shutdown" command does not show in the running-config after ISSU 8.4(1) and 8.4(1a)

Summary: Cisco MDS: Interface "no shutdown" command does not show in the running-config after ISSU 8.4(1) and 8.4(1a)

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Symptoms

Upgraded to 8.4(1) or 8.4(1a)

Symptom 1: "Show running-config diff" command shows a difference in the number of lines between the running and startup config. And it points to the differences in startup under the port channel config:

show running-config diff
*** Startup-config
--- Running-config
***************
*** 1057,1072 ****
    ip address 10.210.0.13 255.255.255.0

  interface port-channel30
    switchport mode E
    switchport rate-mode dedicated
-   no shutdown
  interface port-channel200
    switchport mode F
    switchport rate-mode dedicated
-   no shutdown
  vsan database
    vsan 30 interface port-channel30
    vsan 10 interface port-channel200
    vsan 10 interface fc1/9
    vsan 10 interface fc1/10
--- 1057,1070 ----

Symptom 2: outright comparison of the show running config vs the show startup config outputs shows the difference between them:

show running config

interface port-channel30
  switchport mode E
  switchport rate-mode dedicated

interface port-channel200
  switchport mode F
  switchport rate-mode dedicated

show startup config:

interface port-channel30
  switchport mode E
  switchport rate-mode dedicated
  no shutdown<-------------------------------not listed in running config

interface port-channel200
  switchport mode F
  switchport rate-mode dedicated
  no shutdown<--------------------------------------------not listed in running config
vsan database
  vsan 30 interface port-channel30
  vsan 10 interface port-channel200

Additional symptom differences examples:
At version 8.3(1)
"no shutdown" does not show in the running or startup config.
"shutdown" does show in both running and startup.

9396T-1(config-if)# show run int po123

!Command: show running-config interface port-channel123
!Running configuration last done at: Sun Aug 19 20:37:45 2018
!Time: Sun Aug 19 20:57:32 2018

version 8.3(1)

interface port-channel123
  switchport mode E
  switchport trunk allowed vsan 1-2
  switchport rate-mode dedicated

9396T-1(config-if)# show start int po123

!Command: show startup-config interface port-channel123
!Time: Sun Aug 19 20:57:54 2018
!Startup config saved at: Sun Aug 19 20:38:25 2018

version 8.3(1)

interface port-channel123
  switchport mode E
  switchport trunk allowed vsan 1-2
  switchport rate-mode dedicated

------------------------------------------------------------------
9396T-1(config-if)# shut
9396T-1(config-if)# show run int po123

!Command: show running-config interface port-channel123
!Running configuration last done at: Sun Aug 19 20:58:22 2018
!Time: Sun Aug 19 20:58:31 2018

version 8.3(1)

interface port-channel123
  switchport mode E
  switchport trunk allowed vsan 1-2
  shutdown       <-----------------------------------------------------
  switchport rate-mode dedicated

9396T-1(config-if)# copy run start

9396T-1(config-if)# show start int po123

!Command: show startup-config interface port-channel123
!Time: Sun Aug 19 20:59:42 2018
!Startup config saved at: Sun Aug 19 20:59:22 2018

version 8.3(1)

interface port-channel123
  switchport mode E
  switchport trunk allowed vsan 1-2
  shutdown      <-----------------------------------------------------
  switchport rate-mode dedicated

Version 8.4(1)
"no shutdown" now shows in the startup config, but not the running config.
"shutdown" does show in both running and startup.

MDS9396S-1(config-if)# show run int po149

!Command: show running-config interface port-channel149
!Running configuration last done at: Wed Jan 22 09:35:26 2020
!Time: Wed Jan 22 09:53:35 2020

version 8.4(1)

interface port-channel149
  channel mode on
  switchport mode E
  switchport trunk allowed vsan 237
  switchport rate-mode dedicated
  switchport trunk mode auto

MDS9396S-1(config-if)# show start int po149

!Command: show startup-config interface port-channel149
!Time: Wed Jan 22 09:54:01 2020
!Startup config saved at: Wed Jan 22 09:35:47 2020

version 8.4(1)

interface port-channel149
  channel mode on
  switchport mode E
  switchport trunk allowed vsan 237
  switchport rate-mode dedicated
  switchport trunk mode auto
  no shutdown      <-------------------------------------

After SHUTDOWN is configured for the Port-channel interface:

MDS9396S-1(config-if)# shut

MDS9396S-1(config-if)# show run int po149

!Command: show running-config interface port-channel149
!Running configuration last done at: Wed Jan 22 09:54:53 2020
!Time: Wed Jan 22 09:54:58 2020

version 8.4(1)

interface port-channel149
  channel mode on
  switchport mode E
  switchport trunk allowed vsan 237
  shutdown        <-----------------------
  switchport rate-mode dedicated
  switchport trunk mode auto

MDS9396S-1(config-if)# copy run start

MDS9396S-1(config-if)# show start int po149

!Command: show startup-config interface port-channel149
!Time: Wed Jan 22 10:07:39 2020
!Startup config saved at: Wed Jan 22 09:59:57 2020

version 8.4(1)

interface port-channel149
  channel mode on
  switchport mode E
  switchport trunk allowed vsan 237
  shutdown      <-------------------------
  switchport rate-mode dedicated
  switchport trunk mode auto

 

Cause

Cisco bug id CSCvs76682 - Interface "no shutdown" command does not show in the running-config after ISSU 8.4(1)
Description
Symptom:
After upgrade to 8.4(1), "no shutdown" command for the port-channel interfaces display in the startup-config is not shown on the same interface in the running-config.

This causes management applications to indicate there is a difference between the port-channel interfaces in the running-config and startup-config. (even though the actual port-channel interface status is correct)

Conditions:
Upgrade to 8.4(x).

Workaround:
ISSD to a previous unaffected level
("no shutdown" is not displayed on the port-channel interfaces in either running-config or startup-config.)

Further Problem Description:
Previous to 8.4(1):
"no shutdown" on a port-channel interface was not being displayed in the running-config or startup-config prior to 8.4.
On the port-channel interface, config did show in both running-config and startup-config prior to 8.4.

In 8.4(x):
"no shutdown" interface config statement now shows in the startup config, but not the running-config....
Shutdown interface config statement still does show in both running-config and startup-config.

 

Resolution

Workaround: Downgrade code to a previous code level where the issue is not present.
("no shutdown" is not displayed on the port-channel interfaces in either running-config or startup-config.)

Fix: Upgrade to NX-OS 8.4.2 or above.

 

Additional Information

This is a cosmetic issue, it has no impact on function.

Refer to this video:

 

Affected Products

Connectrix MDS-Series
Article Properties
Article Number: 000077853
Article Type: Solution
Last Modified: 19 Nov 2025
Version:  5
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