This article will explain about the reason of the configuration check-out error due to below message "speed config can neither co-exist with pic <> number-of-ports <> nor pic <> pic-mode config".

When we have configs related to pic-mode and port speed associated with same FPC, then we will get commit error, as they never co-exist with each other as per the design.

Below are the reference config:

set chassis fpc 0 pic 0 pic-mode 100G

set chassis fpc 0 pic 0 port 0 speed 10g

We will not be able to commit anything and will get below error:

lab_root@host# commit check

[edit chassis fpc 0 pic 0 port 0 speed]

 'speed 10g'

    speed config can neither co-exist with pic <> number-of-ports <> nor pic <> pic-mode config

error: configuration check-out failed: (statements constraint check failed)

We need to delete either of these in order to commit the change. For more details regarding this, refer below document:

https://www.juniper.net/documentation/us/en/software/junos/cli-reference/topics/ref/statement/pic-mode-edit-chassis-mx-series.html

lab_root@host# delete chassis fpc 0 pic 0 pic-mode 100G 

[edit]

lab_root@host# show| compare 

[edit chassis]

+  fpc 0 {

+    pic 0 {

+      port 0 {

+        speed 10g;

+      }

+    }

+  }

[edit]

lab_root@host# commit check 

configuration check succeeds

Soft Restart:

In case of Minor alarm for PIC,

In case of Minor alarm for FPC,

OR